diff options
| author | Eric Biederman <ebiederm@xmission.com> | 2003-05-09 02:39:00 +0000 |
|---|---|---|
| committer | Eric Biederman <ebiederm@xmission.com> | 2003-05-09 02:39:00 +0000 |
| commit | 0babc1c1164dd7ec51fde8141c8687a71997c81b (patch) | |
| tree | 964a87fc9af3411df0dab4dda46253871f9a76b4 | |
| parent | ba8c25affb3178006435fd54c2ddef51587cc1bf (diff) | |
- Implement support for structures, typedefs, and __builtin_rdmsr, __builtin_wrmsr in romcc
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@819 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
| -rw-r--r-- | util/romcc/Makefile | 8 | ||||
| -rw-r--r-- | util/romcc/romcc.c | 3335 | ||||
| -rw-r--r-- | util/romcc/tests/simple_test19.c | 24 |
3 files changed, 1881 insertions, 1486 deletions
diff --git a/util/romcc/Makefile b/util/romcc/Makefile index 76dbb5e2fb..51e5fa8f52 100644 --- a/util/romcc/Makefile +++ b/util/romcc/Makefile @@ -1,5 +1,5 @@ -VERSION:=0.21 -RELEASE_DATE:=7 April 2003 +VERSION:=0.23 +RELEASE_DATE:=08 May 2003 PACKAGE:=romcc @@ -30,6 +30,10 @@ TESTS=\ simple_test13.c \ simple_test14.c \ simple_test15.c \ + simple_test16.c \ + simple_test17.c \ + simple_test18.c \ + simple_test19.c \ raminit_test.c \ raminit_test2.c diff --git a/util/romcc/romcc.c b/util/romcc/romcc.c index 0f1367cef6..f138195432 100644 --- a/util/romcc/romcc.c +++ b/util/romcc/romcc.c @@ -266,7 +266,7 @@ struct token { #define OP_UMOD 5 #define OP_ADD 6 #define OP_SUB 7 -#define OP_SL 8 +#define OP_SL 8 #define OP_USR 9 #define OP_SSR 10 #define OP_AND 11 @@ -300,122 +300,125 @@ struct token { #define IS_CONST_OP(X) (((X) >= OP_MIN_CONST) && ((X) <= OP_MAX_CONST)) #define OP_INTCONST 50 #define OP_BLOBCONST 51 -/* For OP_BLOBCONST triple->type holds the layout and size +/* For OP_BLOBCONST ->type holds the layout and size * information. u.blob holds a pointer to the raw binary * data for the constant initializer. */ #define OP_ADDRCONST 52 -/* For OP_ADDRCONST triple->type holds the type. - * triple->left holds the reference to the static variable. - * triple->u.cval holds an offset from that value. +/* For OP_ADDRCONST ->type holds the type. + * RHS(0) holds the reference to the static variable. + * ->u.cval holds an offset from that value. */ #define OP_WRITE 60 /* OP_WRITE moves one pseudo register to another. - * triple->left holds the destination pseudo register, - * must be an OP_DECL. - * triple->right holds the psuedo to move. + * LHS(0) holds the destination pseudo register, which must be an OP_DECL. + * RHS(0) holds the psuedo to move. */ #define OP_READ 61 /* OP_READ reads the value of a variable and makes * it available for the pseudo operation. * Useful for things like def-use chains. - * triple->left holds points to the triple to read from. + * RHS(0) holds points to the triple to read from. */ #define OP_COPY 62 -/* OP_COPY makes a copy of the psedo register or constant in op->left. +/* OP_COPY makes a copy of the psedo register or constant in RHS(0). + */ +#define OP_PIECE 63 +/* OP_PIECE returns one piece of a instruction that returns a structure. + * RHS(0) is the instruction + * u.cval is the LHS piece of the instruction to return. */ -/* Hard operations that I don't know if they are worth supporting */ #define OP_DEREF 65 /* OP_DEREF generates an lvalue from a pointer. - * triple->left holds the pointer value. + * RHS(0) holds the pointer value. * OP_DEREF serves as a place holder to indicate all necessary * checks have been done to indicate a value is an lvalue. */ #define OP_DOT 66 - +/* OP_DOT references a submember of a structure lvalue. + * RHS(0) holds the lvalue. + * ->u.field holds the name of the field we want. + * + * Not seen outside of expressions. + */ #define OP_VAL 67 /* OP_VAL returns the value of a subexpression of the current expression. * Useful for operators that have side effects. - * triple->left holds the expression. - * triple->right holds the subexpression of triple->left that is the + * RHS(0) holds the expression. + * MISC(0) holds the subexpression of RHS(0) that is the * value of the expression. * * Not seen outside of expressions. */ #define OP_LAND 68 -/* OP_LAND performs a C logical and between triple->left and triple->right. +/* OP_LAND performs a C logical and between RHS(0) and RHS(1). * Not seen outside of expressions. */ #define OP_LOR 69 -/* OP_LOR performs a C logical or between triple->left and triple->right. +/* OP_LOR performs a C logical or between RHS(0) and RHS(1). * Not seen outside of expressions. */ #define OP_COND 70 /* OP_CODE performas a C ? : operation. - * triple->left holds the test. - * triple->right holds an OP_PRODUCT triple. - * triple->right->left holds the expression to evaluate if - * the test returns true. - * triple->right->right holds the expression to evaluate if - * the test returns false. + * RHS(0) holds the test. + * RHS(1) holds the expression to evaluate if the test returns true. + * RHS(2) holds the expression to evaluate if the test returns false. * Not seen outside of expressions. */ #define OP_COMMA 71 /* OP_COMMA performacs a C comma operation. - * That is triple->left is evaluated, then triple->right - * and the value of triple->right is returned. + * That is RHS(0) is evaluated, then RHS(1) + * and the value of RHS(1) is returned. * Not seen outside of expressions. */ #define OP_CALL 72 /* OP_CALL performs a procedure call. - * triple->left holda a pointer to the OP_LIST of a function - * triple->right holds a pointer either a single argument - * or a list of arguments. The list is formed by inserting - * OP_PRODUCT triples inbetween the argument values. + * MISC(0) holds a pointer to the OP_LIST of a function + * RHS(x) holds argument x of a function + * * Currently not seen outside of expressions. */ -#define OP_PRODUCT 73 -/* OP_PRODUCT is a utility triple, both triple->left and triple->right - * are used. Other opcodes OP_CALL, and OP_COND use it increase - * the number of triple pointers in a triple. - * Currently Not seen outside of expressions. +#define OP_VAL_VEC 74 +/* OP_VAL_VEC is an array of triples that are either variable + * or values for a structure or an array. + * RHS(x) holds element x of the vector. + * triple->type->elements holds the size of the vector. */ /* statements */ #define OP_LIST 80 /* OP_LIST Holds a list of statements, and a result value. - * triple->left holds the list of statements. - * triple->right holds the value of the statements. - * triple->right must be the last statement in the list. + * RHS(0) holds the list of statements. + * MISC(0) holds the value of the statements. */ #define OP_BRANCH 81 /* branch */ /* For branch instructions - * triple->left holds the branch target. - * triple->right holds the branch condition. - * triple->next holds where to branch to if the branch is not taken. + * TARG(0) holds the branch target. + * RHS(0) if present holds the branch condition. + * ->next holds where to branch to if the branch is not taken. * The branch target can only be a decl... */ #define OP_LABEL 83 /* OP_LABEL is a triple that establishes an target for branches. - * triple->use is the list of all branches that use this label. + * ->use is the list of all branches that use this label. */ #define OP_ADECL 84 /* OP_DECL is a triple that establishes an lvalue for assignments. - * triple->use is a list of statements that use the variable. + * ->use is a list of statements that use the variable. */ #define OP_SDECL 85 /* OP_VAR is a triple that establishes a variable of static * storage duration. - * triple->use is a list of statements that use the variable. - * triple->left holds the initializer expression. + * ->use is a list of statements that use the variable. + * MISC(0) holds the initializer expression. */ @@ -426,12 +429,12 @@ struct token { * The operation is a cross between OP_DECL and OP_WRITE, which * is what OP_PHI is geneared from. * - * triple->left points to an array of pointers to triple. - * The size of the array is the number of control paths into the block + * RHS(x) points to the value from code path x + * The number of RHS entries is the number of control paths into the block * in which OP_PHI resides. The elements of the array point to point * to the variables OP_PHI is derived from. * - * triple->right holds a pointer to the original OP_DECL node + * MISC(0) holds a pointer to the orginal OP_DECL node. */ /* Architecture specific instructions */ @@ -469,117 +472,134 @@ struct token { #define OP_OUTL 135 #define OP_BSF 136 #define OP_BSR 137 -#warning "FIXME implement rdmsr wrmsr" -#if 0 -/* I need to implement these but, I need to implment > 32bit return - * values first. - */ #define OP_RDMSR 138 #define OP_WRMSR 139 -#endif #define OP_HLT 140 -static const char *table_ops[] = { -[OP_SMUL ] = "smul", -[OP_UMUL ] = "umul", -[OP_SDIV ] = "sdiv", -[OP_UDIV ] = "udiv", -[OP_SMOD ] = "smod", -[OP_UMOD ] = "umod", -[OP_ADD ] = "add", -[OP_SUB ] = "sub", -[OP_SL ] = "sl", -[OP_USR ] = "usr", -[OP_SSR ] = "ssr", -[OP_AND ] = "and", -[OP_XOR ] = "xor", -[OP_OR ] = "or", -[OP_POS ] = "pos", -[OP_NEG ] = "neg", -[OP_INVERT ] = "invert", - -[OP_EQ ] = "eq", -[OP_NOTEQ ] = "noteq", -[OP_SLESS ] = "sless", -[OP_ULESS ] = "uless", -[OP_SMORE ] = "smore", -[OP_UMORE ] = "umore", -[OP_SLESSEQ ] = "slesseq", -[OP_ULESSEQ ] = "ulesseq", -[OP_SMOREEQ ] = "smoreeq", -[OP_UMOREEQ ] = "umoreeq", -[OP_LFALSE ] = "lfalse", -[OP_LTRUE ] = "ltrue", - -[OP_LOAD ] = "load", -[OP_STORE ] = "store", - -[OP_NOOP ] = "noop", - -[OP_INTCONST ] = "intconst", -[OP_BLOBCONST ] = "blobconst", -[OP_ADDRCONST ] = "addrconst", - -[OP_WRITE ] = "write", -[OP_READ ] = "read", -[OP_COPY ] = "copy", -[OP_DEREF ] = "deref", -[OP_DOT ] = "dot", - -[OP_VAL ] = "val", -[OP_LAND ] = "land", -[OP_LOR ] = "lor", -[OP_COND ] = "cond", -[OP_COMMA ] = "comma", -[OP_CALL ] = "call", -[OP_PRODUCT ] = "product", - -[OP_LIST ] = "list", -[OP_BRANCH ] = "branch", -[OP_LABEL ] = "label", -[OP_ADECL ] = "adecl", -[OP_SDECL ] = "sdecl", -[OP_PHI ] = "phi", - -[OP_CMP ] = "cmp", -[OP_TEST ] = "test", -[OP_SET_EQ ] = "set_eq", -[OP_SET_NOTEQ ] = "set_noteq", -[OP_SET_SLESS ] = "set_sless", -[OP_SET_ULESS ] = "set_uless", -[OP_SET_SMORE ] = "set_smore", -[OP_SET_SMORE ] = "set_umore", -[OP_SET_SLESSEQ] = "set_slesseq", -[OP_SET_ULESSEQ] = "set_ulesseq", -[OP_SET_SMOREEQ] = "set_smoreq", -[OP_SET_UMOREEQ] = "set_umoreq", -[OP_JMP ] = "jmp", -[OP_JMP_EQ ] = "jmp_eq", -[OP_JMP_NOTEQ ] = "jmp_noteq", -[OP_JMP_SLESS ] = "jmp_sless", -[OP_JMP_ULESS ] = "jmp_uless", -[OP_JMP_SMORE ] = "jmp_smore", -[OP_JMP_SMORE ] = "jmp_umore", -[OP_JMP_SLESSEQ] = "jmp_slesseq", -[OP_JMP_ULESSEQ] = "jmp_ulesseq", -[OP_JMP_SMOREEQ] = "jmp_smoreq", -[OP_JMP_UMOREEQ] = "jmp_umoreq", - -[OP_INB ] = "__inb", -[OP_INW ] = "__inw", -[OP_INL ] = "__inl", -[OP_OUTB ] = "__outb", -[OP_OUTW ] = "__outw", -[OP_OUTL ] = "__outl", -[OP_BSF ] = "__bsf", -[OP_BSR ] = "__bsr", -[OP_HLT ] = "__hlt", - +struct op_info { + const char *name; + unsigned flags; +#define PURE 1 +#define IMPURE 2 +#define PURE_BITS(FLAGS) ((FLAGS) & 0x3) +#define DEF 4 + unsigned char lhs, rhs, misc, targ; }; +#define OP(LHS, RHS, MISC, TARG, FLAGS, NAME) { \ + .name = (NAME), \ + .flags = (FLAGS), \ + .lhs = (LHS), \ + .rhs = (RHS), \ + .misc = (MISC), \ + .targ = (TARG), \ + } +static const struct op_info table_ops[] = { +[OP_SMUL ] = OP( 0, 2, 0, 0, PURE | DEF, "smul"), +[OP_UMUL ] = OP( 0, 2, 0, 0, PURE | DEF, "umul"), +[OP_SDIV ] = OP( 0, 2, 0, 0, PURE | DEF, "sdiv"), +[OP_UDIV ] = OP( 0, 2, 0, 0, PURE | DEF, "udiv"), +[OP_SMOD ] = OP( 0, 2, 0, 0, PURE | DEF, "smod"), +[OP_UMOD ] = OP( 0, 2, 0, 0, PURE | DEF, "umod"), +[OP_ADD ] = OP( 0, 2, 0, 0, PURE | DEF, "add"), +[OP_SUB ] = OP( 0, 2, 0, 0, PURE | DEF, "sub"), +[OP_SL ] = OP( 0, 2, 0, 0, PURE | DEF, "sl"), +[OP_USR ] = OP( 0, 2, 0, 0, PURE | DEF, "usr"), +[OP_SSR ] = OP( 0, 2, 0, 0, PURE | DEF, "ssr"), +[OP_AND ] = OP( 0, 2, 0, 0, PURE | DEF, "and"), +[OP_XOR ] = OP( 0, 2, 0, 0, PURE | DEF, "xor"), +[OP_OR ] = OP( 0, 2, 0, 0, PURE | DEF, "or"), +[OP_POS ] = OP( 0, 1, 0, 0, PURE | DEF, "pos"), +[OP_NEG ] = OP( 0, 1, 0, 0, PURE | DEF, "neg"), +[OP_INVERT ] = OP( 0, 1, 0, 0, PURE | DEF, "invert"), + +[OP_EQ ] = OP( 0, 2, 0, 0, PURE | DEF, "eq"), +[OP_NOTEQ ] = OP( 0, 2, 0, 0, PURE | DEF, "noteq"), +[OP_SLESS ] = OP( 0, 2, 0, 0, PURE | DEF, "sless"), +[OP_ULESS ] = OP( 0, 2, 0, 0, PURE | DEF, "uless"), +[OP_SMORE ] = OP( 0, 2, 0, 0, PURE | DEF, "smore"), +[OP_UMORE ] = OP( 0, 2, 0, 0, PURE | DEF, "umore"), +[OP_SLESSEQ ] = OP( 0, 2, 0, 0, PURE | DEF, "slesseq"), +[OP_ULESSEQ ] = OP( 0, 2, 0, 0, PURE | DEF, "ulesseq"), +[OP_SMOREEQ ] = OP( 0, 2, 0, 0, PURE | DEF, "smoreeq"), +[OP_UMOREEQ ] = OP( 0, 2, 0, 0, PURE | DEF, "umoreeq"), +[OP_LFALSE ] = OP( 0, 1, 0, 0, PURE | DEF, "lfalse"), +[OP_LTRUE ] = OP( 0, 1, 0, 0, PURE | DEF, "ltrue"), + +[OP_LOAD ] = OP( 0, 1, 0, 0, IMPURE | DEF, "load"), +[OP_STORE ] = OP( 1, 1, 0, 0, IMPURE, "store"), + +[OP_NOOP ] = OP( 0, 0, 0, 0, PURE, "noop"), + +[OP_INTCONST ] = OP( 0, 0, 0, 0, PURE, "intconst"), +[OP_BLOBCONST ] = OP( 0, 0, 0, 0, PURE, "blobconst"), +[OP_ADDRCONST ] = OP( 0, 1, 0, 0, PURE, "addrconst"), + +[OP_WRITE ] = OP( 1, 1, 0, 0, PURE, "write"), +[OP_READ ] = OP( 0, 1, 0, 0, PURE | DEF, "read"), +[OP_COPY ] = OP( 0, 1, 0, 0, PURE | DEF, "copy"), +[OP_PIECE ] = OP( 0, 1, 0, 0, PURE | DEF, "piece"), +[OP_DEREF ] = OP( 0, 1, 0, 0, 0 | DEF, "deref"), +[OP_DOT ] = OP( 0, 1, 0, 0, 0 | DEF, "dot"), + +[OP_VAL ] = OP( 0, 1, 1, 0, 0 | DEF, "val"), +[OP_LAND ] = OP( 0, 2, 0, 0, 0 | DEF, "land"), +[OP_LOR ] = OP( 0, 2, 0, 0, 0 | DEF, "lor"), +[OP_COND ] = OP( 0, 3, 0, 0, 0 | DEF, "cond"), +[OP_COMMA ] = OP( 0, 2, 0, 0, 0 | DEF, "comma"), +/* Call is special most it can stand in for anything so it depends on context */ +[OP_CALL ] = OP(-1, -1, 1, 0, 0, "call"), +/* The sizes of OP_CALL and OP_VAL_VEC depend upon context */ +[OP_VAL_VEC ] = OP( 0, -1, 0, 0, 0, "valvec"), + +[OP_LIST ] = OP( 0, 1, 1, 0, 0 | DEF, "list"), +/* The number of targets for OP_BRANCH depends on context */ +[OP_BRANCH ] = OP( 0, -1, 0, 1, PURE, "branch"), +[OP_LABEL ] = OP( 0, 0, 0, 0, PURE, "label"), +[OP_ADECL ] = OP( 0, 0, 0, 0, PURE, "adecl"), +[OP_SDECL ] = OP( 0, 0, 1, 0, PURE, "sdecl"), +/* The number of RHS elements of OP_PHI depend upon context */ +[OP_PHI ] = OP( 0, -1, 1, 0, PURE | DEF, "phi"), + +[OP_CMP ] = OP( 0, 2, 0, 0, PURE | DEF, "cmp"), +[OP_TEST ] = OP( 0, 1, 0, 0, PURE | DEF, "test"), +[OP_SET_EQ ] = OP( 0, 1, 0, 0, PURE | DEF, "set_eq"), +[OP_SET_NOTEQ ] = OP( 0, 1, 0, 0, PURE | DEF, "set_noteq"), +[OP_SET_SLESS ] = OP( 0, 1, 0, 0, PURE | DEF, "set_sless"), +[OP_SET_ULESS ] = OP( 0, 1, 0, 0, PURE | DEF, "set_uless"), +[OP_SET_SMORE ] = OP( 0, 1, 0, 0, PURE | DEF, "set_smore"), +[OP_SET_UMORE ] = OP( 0, 1, 0, 0, PURE | DEF, "set_umore"), +[OP_SET_SLESSEQ] = OP( 0, 1, 0, 0, PURE | DEF, "set_slesseq"), +[OP_SET_ULESSEQ] = OP( 0, 1, 0, 0, PURE | DEF, "set_ulesseq"), +[OP_SET_SMOREEQ] = OP( 0, 1, 0, 0, PURE | DEF, "set_smoreq"), +[OP_SET_UMOREEQ] = OP( 0, 1, 0, 0, PURE | DEF, "set_umoreq"), +[OP_JMP ] = OP( 0, 0, 0, 1, PURE, "jmp"), +[OP_JMP_EQ ] = OP( 0, 1, 0, 1, PURE, "jmp_eq"), +[OP_JMP_NOTEQ ] = OP( 0, 1, 0, 1, PURE, "jmp_noteq"), +[OP_JMP_SLESS ] = OP( 0, 1, 0, 1, PURE, "jmp_sless"), +[OP_JMP_ULESS ] = OP( 0, 1, 0, 1, PURE, "jmp_uless"), +[OP_JMP_SMORE ] = OP( 0, 1, 0, 1, PURE, "jmp_smore"), +[OP_JMP_UMORE ] = OP( 0, 1, 0, 1, PURE, "jmp_umore"), +[OP_JMP_SLESSEQ] = OP( 0, 1, 0, 1, PURE, "jmp_slesseq"), +[OP_JMP_ULESSEQ] = OP( 0, 1, 0, 1, PURE, "jmp_ulesseq"), +[OP_JMP_SMOREEQ] = OP( 0, 1, 0, 1, PURE, "jmp_smoreq"), +[OP_JMP_UMOREEQ] = OP( 0, 1, 0, 1, PURE, "jmp_umoreq"), + +[OP_INB ] = OP( 0, 1, 0, 0, IMPURE | DEF, "__inb"), +[OP_INW ] = OP( 0, 1, 0, 0, IMPURE | DEF, "__inw"), +[OP_INL ] = OP( 0, 1, 0, 0, IMPURE | DEF, "__inl"), +[OP_OUTB ] = OP( 0, 2, 0, 0, IMPURE, "__outb"), +[OP_OUTW ] = OP( 0, 2, 0, 0, IMPURE, "__outw"), +[OP_OUTL ] = OP( 0, 2, 0, 0, IMPURE, "__outl"), +[OP_BSF ] = OP( 0, 1, 0, 0, PURE | DEF, "__bsf"), +[OP_BSR ] = OP( 0, 1, 0, 0, PURE | DEF, "__bsr"), +[OP_RDMSR ] = OP( 2, 1, 0, 0, IMPURE, "__rdmsr"), +[OP_WRMSR ] = OP( 0, 3, 0, 0, IMPURE, "__wrmsr"), +[OP_HLT ] = OP( 0, 0, 0, 0, IMPURE, "__hlt"), +}; +#undef OP #define OP_MAX (sizeof(table_ops)/sizeof(table_ops[0])) - static const char *tops(int index) { static const char unknown[] = "unknown op"; @@ -589,11 +609,9 @@ static const char *tops(int index) if (index > OP_MAX) { return unknown; } - return table_ops[index]; + return table_ops[index].name; } -#warning "FIXME Finish defining struct type" - struct triple; struct block; struct triple_set { @@ -601,22 +619,51 @@ struct triple_set { struct triple *member; }; +#define MAX_LHS 15 +#define MAX_RHS 15 +#define MAX_MISC 15 +#define MAX_TARG 15 + struct triple { struct triple *next, *prev; struct triple_set *use; struct type *type; - int op; + short op; + unsigned short sizes; +#define TRIPLE_LHS(SIZES) (((SIZES) >> 0) & 0x0f) +#define TRIPLE_RHS(SIZES) (((SIZES) >> 4) & 0x0f) +#define TRIPLE_MISC(SIZES) (((SIZES) >> 8) & 0x0f) +#define TRIPLE_TARG(SIZES) (((SIZES) >> 12) & 0x0f) +#define TRIPLE_SIZE(SIZES) \ + ((((SIZES) >> 0) & 0x0f) + \ + (((SIZES) >> 4) & 0x0f) + \ + (((SIZES) >> 8) & 0x0f) + \ + (((SIZES) >> 12) & 0x0f)) +#define TRIPLE_SIZES(LHS, RHS, MISC, TARG) \ + ((((LHS) & 0x0f) << 0) | \ + (((RHS) & 0x0f) << 4) | \ + (((MISC) & 0x0f) << 8) | \ + (((TARG) & 0x0f) << 12)) +#define TRIPLE_LHS_OFF(SIZES) (0) +#define TRIPLE_RHS_OFF(SIZES) (TRIPLE_LHS_OFF(SIZES) + TRIPLE_LHS(SIZES)) +#define TRIPLE_MISC_OFF(SIZES) (TRIPLE_RHS_OFF(SIZES) + TRIPLE_RHS(SIZES)) +#define TRIPLE_TARG_OFF(SIZES) (TRIPLE_MISC_OFF(SIZES) + TRIPLE_MISC(SIZES)) +#define LHS(PTR,INDEX) ((PTR)->param[TRIPLE_LHS_OFF((PTR)->sizes) + (INDEX)]) +#define RHS(PTR,INDEX) ((PTR)->param[TRIPLE_RHS_OFF((PTR)->sizes) + (INDEX)]) +#define TARG(PTR,INDEX) ((PTR)->param[TRIPLE_TARG_OFF((PTR)->sizes) + (INDEX)]) +#define MISC(PTR,INDEX) ((PTR)->param[TRIPLE_MISC_OFF((PTR)->sizes) + (INDEX)]) unsigned id; /* A scratch value and finally the register */ - struct triple *left; - struct triple *right; +#define TRIPLE_FLAG_FLATTENED 1 + const char *filename; + int line; + int col; union { ulong_t cval; struct block *block; void *blob; + struct hash_entry *field; } u; - const char *filename; - int line; - int col; + struct triple *param[2]; }; struct block_set { @@ -684,6 +731,91 @@ struct compile_state { int optimize; }; +/* visibility global/local */ +/* static/auto duration */ +/* typedef, register, inline */ +#define STOR_SHIFT 0 +#define STOR_MASK 0x000f +/* Visibility */ +#define STOR_GLOBAL 0x0001 +/* Duration */ +#define STOR_PERM 0x0002 +/* Storage specifiers */ +#define STOR_AUTO 0x0000 +#define STOR_STATIC 0x0002 +#define STOR_EXTERN 0x0003 +#define STOR_REGISTER 0x0004 +#define STOR_TYPEDEF 0x0008 +#define STOR_INLINE 0x000c + +#define QUAL_SHIFT 4 +#define QUAL_MASK 0x0070 +#define QUAL_NONE 0x0000 +#define QUAL_CONST 0x0010 +#define QUAL_VOLATILE 0x0020 +#define QUAL_RESTRICT 0x0040 + +#define TYPE_SHIFT 8 +#define TYPE_MASK 0x1f00 +#define TYPE_INTEGER(TYPE) (((TYPE) >= TYPE_CHAR) && ((TYPE) <= TYPE_ULLONG)) +#define TYPE_ARITHMETIC(TYPE) (((TYPE) >= TYPE_CHAR) && ((TYPE) <= TYPE_LDOUBLE)) +#define TYPE_UNSIGNED(TYPE) ((TYPE) & 0x0100) +#define TYPE_SIGNED(TYPE) (!TYPE_UNSIGNED(TYPE)) +#define TYPE_MKUNSIGNED(TYPE) ((TYPE) | 0x0100) +#define TYPE_RANK(TYPE) ((TYPE) & ~0x0100) +#define TYPE_PTR(TYPE) (((TYPE) & TYPE_MASK) == TYPE_POINTER) +#define TYPE_DEFAULT 0x0000 +#define TYPE_VOID 0x0100 +#define TYPE_CHAR 0x0200 +#define TYPE_UCHAR 0x0300 +#define TYPE_SHORT 0x0400 +#define TYPE_USHORT 0x0500 +#define TYPE_INT 0x0600 +#define TYPE_UINT 0x0700 +#define TYPE_LONG 0x0800 +#define TYPE_ULONG 0x0900 +#define TYPE_LLONG 0x0a00 /* long long */ +#define TYPE_ULLONG 0x0b00 +#define TYPE_FLOAT 0x0c00 +#define TYPE_DOUBLE 0x0d00 +#define TYPE_LDOUBLE 0x0e00 /* long double */ +#define TYPE_STRUCT 0x1000 +#define TYPE_ENUM 0x1100 +#define TYPE_POINTER 0x1200 +/* For TYPE_POINTER: + * type->left holds the type pointed to. + */ +#define TYPE_FUNCTION 0x1300 +/* For TYPE_FUNCTION: + * type->left holds the return type. + * type->right holds the... + */ +#define TYPE_PRODUCT 0x1400 +/* TYPE_PRODUCT is a basic building block when defining structures + * type->left holds the type that appears first in memory. + * type->right holds the type that appears next in memory. + */ +#define TYPE_OVERLAP 0x1500 +/* TYPE_OVERLAP is a basic building block when defining unions + * type->left and type->right holds to types that overlap + * each other in memory. + */ +#define TYPE_ARRAY 0x1600 +/* TYPE_ARRAY is a basic building block when definitng arrays. + * type->left holds the type we are an array of. + * type-> holds the number of elements. + */ + +#define ELEMENT_COUNT_UNSPECIFIED (~0UL) + +struct type { + unsigned int type; + struct type *left, *right; + ulong_t elements; + struct hash_entry *field_ident; + struct hash_entry *type_ident; +}; + #define MAX_REGISTERS 75 #define MAX_REG_EQUIVS 16 #define MAX_REGC 12 @@ -712,15 +844,16 @@ static int arch_regcm_intersect(unsigned regcm1, unsigned regcm2); static unsigned arch_type_to_regcm(struct compile_state *state, struct type *type); static const char *arch_reg_str(int reg); -#define DEBUG_INTERMEDIATE_CODE 0x0001 -#define DEBUG_CONTROL_FLOW 0x0002 -#define DEBUG_BASIC_BLOCKS 0x0004 -#define DEBUG_FDOMINATORS 0x0008 -#define DEBUG_RDOMINATORS 0x0010 -#define DEBUG_TRIPLES 0x0020 -#define DEBUG_INTERFERENCE 0x0040 -#define DEBUG_ARCH_CODE 0x0080 -#define DEBUG_CODE_ELIMINATION 0x0100 +#define DEBUG_ABORT_ON_ERROR 0x0001 +#define DEBUG_INTERMEDIATE_CODE 0x0002 +#define DEBUG_CONTROL_FLOW 0x0004 +#define DEBUG_BASIC_BLOCKS 0x0008 +#define DEBUG_FDOMINATORS 0x0010 +#define DEBUG_RDOMINATORS 0x0020 +#define DEBUG_TRIPLES 0x0040 +#define DEBUG_INTERFERENCE 0x0080 +#define DEBUG_ARCH_CODE 0x0100 +#define DEBUG_CODE_ELIMINATION 0x0200 #define GLOBAL_SCOPE_DEPTH 1 @@ -796,6 +929,9 @@ static void __error(struct compile_state *state, struct triple *ptr, vfprintf(stderr, fmt, args); va_end(args); fprintf(stderr, "\n"); + if (state->debug & DEBUG_ABORT_ON_ERROR) { + abort(); + } exit(1); } @@ -825,17 +961,22 @@ static void __warning(struct compile_state *state, struct triple *ptr, #define FINISHME() warning(state, 0, "FINISHME @ %s.%s:%d", __FILE__, __func__, __LINE__) -static void valid_op(struct compile_state *state, struct triple *ptr) +static void valid_op(struct compile_state *state, int op) { char *fmt = "invalid op: %d"; - if (ptr->op >= OP_MAX) { - internal_error(state, 0, fmt, ptr->op); + if (op >= OP_MAX) { + internal_error(state, 0, fmt, op); } - if (ptr->op < 0) { - internal_error(state, 0, fmt, ptr->op); + if (op < 0) { + internal_error(state, 0, fmt, op); } } +static void valid_ins(struct compile_state *state, struct triple *ptr) +{ + valid_op(state, ptr->op); +} + static void process_trigraphs(struct compile_state *state) { char *src, *dest, *end; @@ -981,24 +1122,81 @@ static struct triple zero_triple = { .prev = &zero_triple, .use = 0, .op = OP_INTCONST, + .sizes = TRIPLE_SIZES(0, 0, 0, 0), .id = -1, /* An invalid id */ - .left = 0, - .right = 0, .u = { .cval = 0, }, .filename = __FILE__, .line = __LINE__, + .col = 0, + .param { [0] = 0, [1] = 0, }, }; -static struct triple *build_triple(struct compile_state *state, - int op, struct type *type, struct triple *left, struct triple *right, + +static unsigned short triple_sizes(struct compile_state *state, + int op, struct type *type, int rhs_wanted) +{ + int lhs, rhs, misc, targ; + valid_op(state, op); + lhs = table_ops[op].lhs; + rhs = table_ops[op].rhs; + misc = table_ops[op].misc; + targ = table_ops[op].targ; + + + if (op == OP_CALL) { + struct type *param; + rhs = 0; + param = type->right; + while((param->type & TYPE_MASK) == TYPE_PRODUCT) { + rhs++; + param = param->right; + } + if ((param->type & TYPE_MASK) != TYPE_VOID) { + rhs++; + } + lhs = 0; + if ((type->left->type & TYPE_MASK) == TYPE_STRUCT) { + lhs = type->left->elements; + } + } + else if (op == OP_VAL_VEC) { + rhs = type->elements; + } + else if ((op == OP_BRANCH) || (op == OP_PHI)) { + rhs = rhs_wanted; + } + if ((rhs < 0) || (rhs > MAX_RHS)) { + internal_error(state, 0, "bad rhs"); + } + if ((lhs < 0) || (lhs > MAX_LHS)) { + internal_error(state, 0, "bad lhs"); + } + if ((misc < 0) || (misc > MAX_MISC)) { + internal_error(state, 0, "bad misc"); + } + if ((targ < 0) || (targ > MAX_TARG)) { + internal_error(state, 0, "bad targs"); + } + return TRIPLE_SIZES(lhs, rhs, misc, targ); +} + +static struct triple *alloc_triple(struct compile_state *state, + int op, struct type *type, int rhs, const char *filename, int line, int col) { + size_t size, sizes, extra_count, min_count; struct triple *ret; - ret = xcmalloc(sizeof(*ret), "tripple"); + sizes = triple_sizes(state, op, type, rhs); + + min_count = sizeof(ret->param)/sizeof(ret->param[0]); + extra_count = TRIPLE_SIZE(sizes); + extra_count = (extra_count < min_count)? 0 : extra_count - min_count; + + size = sizeof(*ret) + sizeof(ret->param[0]) * extra_count; + ret = xcmalloc(size, "tripple"); ret->op = op; + ret->sizes = sizes; ret->type = type; - ret->left = left; - ret->right = right; ret->next = ret; ret->prev = ret; ret->filename = filename; @@ -1007,8 +1205,20 @@ static struct triple *build_triple(struct compile_state *state, return ret; } -static struct triple *triple(struct compile_state *state, - int op, struct type *type, struct triple *left, struct triple *right) +struct triple *dup_triple(struct compile_state *state, struct triple *src) +{ + struct triple *dup; + int src_rhs; + src_rhs = TRIPLE_RHS(src->sizes); + dup = alloc_triple(state, src->op, src->type, src_rhs, + src->filename, src->line, src->col); + memcpy(dup, src, sizeof(*src)); + memcpy(dup->param, src->param, src_rhs * sizeof(src->param[0])); + return dup; +} + +static struct triple *new_triple(struct compile_state *state, + int op, struct type *type, int rhs) { struct triple *ret; const char *filename; @@ -1021,29 +1231,75 @@ static struct triple *triple(struct compile_state *state, line = state->file->line; col = get_col(state->file); } - ret = build_triple(state, op, type, left, right, filename, line, col); + ret = alloc_triple(state, op, type, rhs, + filename, line, col); + return ret; +} + +static struct triple *build_triple(struct compile_state *state, + int op, struct type *type, struct triple *left, struct triple *right, + const char *filename, int line, int col) +{ + struct triple *ret; + size_t count; + ret = alloc_triple(state, op, type, -1, filename, line, col); + count = TRIPLE_SIZE(ret->sizes); + if (count > 0) { + ret->param[0] = left; + } + if (count > 1) { + ret->param[1] = right; + } + return ret; +} + +static struct triple *triple(struct compile_state *state, + int op, struct type *type, struct triple *left, struct triple *right) +{ + struct triple *ret; + size_t count; + ret = new_triple(state, op, type, -1); + count = TRIPLE_SIZE(ret->sizes); + if (count >= 1) { + ret->param[0] = left; + } + if (count >= 2) { + ret->param[1] = right; + } + return ret; +} + +static struct triple *branch(struct compile_state *state, + struct triple *targ, struct triple *test) +{ + struct triple *ret; + ret = new_triple(state, OP_BRANCH, &void_type, test?1:0); + if (test) { + RHS(ret, 0) = test; + } + TARG(ret, 0) = targ; /* record the branch target was used */ - if (ret->op == OP_BRANCH) { - if (!left || (left->op != OP_LABEL)) { - internal_error(state, 0, "branch not to label"); - } - use_triple(left, ret); + if (!targ || (targ->op != OP_LABEL)) { + internal_error(state, 0, "branch not to label"); + use_triple(targ, ret); } return ret; } + static void insert_triple(struct compile_state *state, struct triple *first, struct triple *ptr) { if (ptr) { - if (ptr->next != ptr) { + if ((ptr->id & TRIPLE_FLAG_FLATTENED) || (ptr->next != ptr)) { internal_error(state, ptr, "expression already used"); } ptr->next = first; ptr->prev = first->prev; ptr->prev->next = ptr; ptr->next->prev = ptr; - if ((ptr->prev->op == OP_BRANCH) && (ptr->prev->right)) { + if ((ptr->prev->op == OP_BRANCH) && + TRIPLE_RHS(ptr->prev->sizes)) { unuse_triple(first, ptr->prev); use_triple(ptr, ptr->prev); } @@ -1084,351 +1340,132 @@ static struct triple *label(struct compile_state *state) return result; } +static void display_triple(FILE *fp, struct triple *ins) +{ + if (ins->op == OP_INTCONST) { + fprintf(fp, "(%p) %3d %-10s 0x%08lx @ %s:%d.%d\n", + ins, ID_REG(ins->id), tops(ins->op), ins->u.cval, + ins->filename, ins->line, ins->col); + } + else if (ins->op == OP_SDECL) { + fprintf(fp, "(%p) %3d %-10s %-10p @ %s:%d.%d\n", + ins, ID_REG(ins->id), tops(ins->op), MISC(ins, 0), + ins->filename, ins->line, ins->col); +#if 0 + print_ins(state, MISC(ins, 0)); +#endif + } + else { + int i, count; + fprintf(fp, "(%p) %3d %-10s", + ins, ID_REG(ins->id), tops(ins->op)); + count = TRIPLE_SIZE(ins->sizes); + for(i = 0; i < count; i++) { + fprintf(fp, " %-10p", ins->param[i]); + } + for(; i < 2; i++) { + printf(" "); + } + fprintf(fp, " @ %s:%d.%d\n", + ins->filename, ins->line, ins->col); + } + fflush(fp); +} + static int triple_is_pure(struct compile_state *state, struct triple *ins) { /* Does the triple have no side effects. * I.e. Rexecuting the triple with the same arguments * gives the same value. */ - int pure; - switch(ins->op) { - case OP_SMUL: case OP_UMUL: - case OP_SDIV: case OP_UDIV: - case OP_SMOD: case OP_UMOD: - case OP_ADD: case OP_SUB: - case OP_SL: - case OP_USR: case OP_SSR: - case OP_AND: - case OP_XOR: - case OP_OR: - case OP_POS: case OP_NEG: - case OP_INVERT: - case OP_EQ: case OP_NOTEQ: - case OP_SLESS: case OP_ULESS: case OP_SMORE: case OP_UMORE: - case OP_SLESSEQ: case OP_ULESSEQ: case OP_SMOREEQ: case OP_UMOREEQ: - case OP_LFALSE: case OP_LTRUE: - case OP_NOOP: - case OP_INTCONST: - case OP_BLOBCONST: - case OP_ADDRCONST: - - case OP_WRITE: - case OP_READ: - case OP_COPY: - case OP_BRANCH: - case OP_LABEL: - case OP_ADECL: - case OP_SDECL: - case OP_PHI: - - - case OP_CMP: - case OP_TEST: - case OP_SET_EQ: case OP_SET_NOTEQ: - case OP_SET_SLESS: case OP_SET_ULESS: - case OP_SET_SMORE: case OP_SET_UMORE: - case OP_SET_SLESSEQ: case OP_SET_ULESSEQ: - case OP_SET_SMOREEQ: case OP_SET_UMOREEQ: - - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: - - case OP_BSF: case OP_BSR: - pure = 1; - break; - case OP_LOAD: case OP_STORE: - case OP_INB: case OP_INW: case OP_INL: - case OP_OUTB: case OP_OUTW: case OP_OUTL: - case OP_HLT: - pure = 0; - break; - default: - internal_error(state, ins, "purity of %s not known", + unsigned pure; + valid_ins(state, ins); + pure = PURE_BITS(table_ops[ins->op].flags); + if ((pure != PURE) && (pure != IMPURE)) { + internal_error(state, 0, "Purity of %s not known\n", tops(ins->op)); - pure = 0; - break; } - return pure; + return pure == PURE; } -static int triple_is_branch(struct triple *ins) +static int triple_is_branch(struct compile_state *state, struct triple *ins) { /* This function is used to determine which triples need * a register. */ - int is_branch = 0; - switch(ins->op) { - case OP_BRANCH: - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: - is_branch = 1; - break; - } + int is_branch; + valid_ins(state, ins); + is_branch = (table_ops[ins->op].targ != 0); return is_branch; } -static int triple_is_def(struct triple *ins) +static int triple_is_def(struct compile_state *state, struct triple *ins) { /* This function is used to determine which triples need * a register. */ - int is_def = 1; - switch(ins->op) { - case OP_ADECL: - case OP_SDECL: - case OP_LABEL: - case OP_INTCONST: - case OP_BLOBCONST: - case OP_ADDRCONST: - case OP_STORE: - case OP_WRITE: - case OP_NOOP: - case OP_OUTB: case OP_OUTW: case OP_OUTL: - case OP_BRANCH: - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: - is_def = 0; - break; - } + int is_def; + valid_ins(state, ins); + is_def = (table_ops[ins->op].flags & DEF) == DEF; return is_def; } -static struct triple **triple_targ(struct compile_state *state, - struct triple *triple, struct triple **last) +static struct triple **triple_iter(struct compile_state *state, + size_t count, struct triple **vector, + struct triple *ins, struct triple **last) { struct triple **ret; ret = 0; - switch(triple->op) { - case OP_BRANCH: - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: + if (count) { if (!last) { - ret = &triple->left; + ret = vector; } - else if ((last == &triple->left) && triple->right) { - ret = &triple->next; + else if ((last >= vector) && (last < (vector + count - 1))) { + ret = last + 1; } - break; } return ret; + } -static struct triple **triple_rhs(struct compile_state *state, - struct triple *triple, struct triple **last) +static struct triple **triple_lhs(struct compile_state *state, + struct triple *ins, struct triple **last) { - struct triple **ret; - ret = 0; - switch(triple->op) { - /* binary operations */ - case OP_SMUL: case OP_UMUL: case OP_SDIV: case OP_UDIV: - case OP_SMOD: case OP_UMOD: case OP_ADD: case OP_SUB: - case OP_SL: case OP_USR: case OP_SSR: case OP_AND: - case OP_XOR: case OP_OR: case OP_EQ: case OP_NOTEQ: - case OP_SLESS: case OP_ULESS: case OP_SMORE: case OP_UMORE: - case OP_SLESSEQ: case OP_ULESSEQ: case OP_SMOREEQ: case OP_UMOREEQ: - case OP_CMP: - case OP_OUTB: case OP_OUTW: case OP_OUTL: -#if 0 - if (!triple->left) { - internal_error(state, triple, "left arg missing"); - } - if (!triple->right) { - internal_error(state, triple, "right arg missing"); - } -#endif - if (!last) { - ret = &triple->left; - } - else if (last == &triple->left){ - ret = &triple->right; - } - break; - /* unary operations */ - case OP_POS: case OP_NEG: - case OP_INVERT: case OP_LFALSE: case OP_LTRUE: - case OP_COPY: - case OP_TEST: - case OP_SET_EQ: case OP_SET_NOTEQ: - case OP_SET_SLESS: case OP_SET_ULESS: - case OP_SET_SMORE: case OP_SET_UMORE: - case OP_SET_SLESSEQ: case OP_SET_ULESSEQ: - case OP_SET_SMOREEQ: case OP_SET_UMOREEQ: - case OP_INB: case OP_INW: case OP_INL: - case OP_BSF: case OP_BSR: -#if 0 - if (!triple->left) { - internal_error(state, triple, "left arg missing"); - } - if (triple->right) { - internal_error(state, triple, "right arg present"); - } -#endif - if (!last) { - ret = &triple->left; - } - break; - /* Writes */ - case OP_WRITE: - case OP_STORE: - if (!last) { - ret = &triple->right; - } - break; - /* Reads */ - case OP_READ: - if (!last) { - ret = &triple->left; - } - break; - /* Branches */ - case OP_BRANCH: - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: - if (!last && triple->right) { - ret = &triple->right; - } - break; - /* Phi... */ - case OP_PHI: - { - struct triple **slot; - struct block *block; - block = triple->u.block; - slot = (struct triple **)(triple->left); - if (!last) { - ret = slot; - } - else if ((last >= slot) && (last < (slot + block->users -1))) { - ret = last + 1; - - } - break; - } - /* Loads */ - case OP_LOAD: - /* address constant.. */ - case OP_ADDRCONST: - if (!last) { - ret = &triple->left; - } - break; - /* Stores */ - break; - /* Variables and labels */ - case OP_ADECL: case OP_SDECL: case OP_LABEL: - /* Constants */ - case OP_INTCONST: - case OP_BLOBCONST: - case OP_NOOP: - case OP_HLT: - /* These operations that have no rhs expression */ - break; - default: - internal_error(state, 0, "unknown expression type: %d %s", - triple->op, tops(triple->op)); - break; + return triple_iter(state, TRIPLE_LHS(ins->sizes), &LHS(ins,0), + ins, last); +} - } - return ret; +static struct triple **triple_rhs(struct compile_state *state, + struct triple *ins, struct triple **last) +{ + return triple_iter(state, TRIPLE_RHS(ins->sizes), &RHS(ins,0), + ins, last); } -static struct triple **triple_lhs(struct compile_state *state, - struct triple *triple, struct triple **last) +static struct triple **triple_misc(struct compile_state *state, + struct triple *ins, struct triple **last) { - struct triple **ret; - ret = 0; - switch(triple->op) { - /* binary operations */ - case OP_SMUL: case OP_UMUL: case OP_SDIV: case OP_UDIV: - case OP_SMOD: case OP_UMOD: case OP_ADD: case OP_SUB: - case OP_SL: case OP_USR: case OP_SSR: case OP_AND: - case OP_XOR: case OP_OR: case OP_EQ: case OP_NOTEQ: - case OP_SLESS: case OP_ULESS: case OP_SMORE: case OP_UMORE: - case OP_SLESSEQ: case OP_ULESSEQ: case OP_SMOREEQ: case OP_UMOREEQ: - case OP_CMP: - case OP_OUTB: case OP_OUTW: case OP_OUTL: - /* unary operations */ - case OP_POS: case OP_NEG: - case OP_INVERT: case OP_LFALSE: case OP_LTRUE: - case OP_COPY: - case OP_TEST: - case OP_SET_EQ: case OP_SET_NOTEQ: - case OP_SET_SLESS: case OP_SET_ULESS: - case OP_SET_SMORE: case OP_SET_UMORE: - case OP_SET_SLESSEQ: case OP_SET_ULESSEQ: - case OP_SET_SMOREEQ: case OP_SET_UMOREEQ: - case OP_INB: case OP_INW: case OP_INL: - case OP_BSF: case OP_BSR: - /* Variable reads */ - case OP_READ: case OP_PHI: - /* Branches */ - case OP_BRANCH: - case OP_JMP: - case OP_JMP_EQ: case OP_JMP_NOTEQ: - case OP_JMP_SLESS: case OP_JMP_ULESS: - case OP_JMP_SMORE: case OP_JMP_UMORE: - case OP_JMP_SLESSEQ: case OP_JMP_ULESSEQ: - case OP_JMP_SMOREEQ: case OP_JMP_UMOREEQ: - /* Loads */ - case OP_LOAD: - /* Address constants */ - case OP_ADDRCONST: - /* Variables and labels */ - case OP_ADECL: case OP_SDECL: case OP_LABEL: - /* Constants */ - case OP_INTCONST: - case OP_BLOBCONST: - case OP_NOOP: - case OP_HLT: - /* These expressions have no lhs expression */ - break; - /* Writes */ - case OP_WRITE: - /* Stores */ - case OP_STORE: - if (!last) { - ret = &triple->left; - } - break; - default: - internal_error(state, 0, "unknown expression type: %d %s", - triple->op, tops(triple->op)); - break; - } - return ret; + return triple_iter(state, TRIPLE_MISC(ins->sizes), &MISC(ins,0), + ins, last); +} +static struct triple **triple_targ(struct compile_state *state, + struct triple *ins, struct triple **last) +{ + return triple_iter(state, TRIPLE_TARG(ins->sizes), &TARG(ins,0), + ins, last); } static void free_triple(struct compile_state *state, struct triple *ptr) { + size_t size; + size = sizeof(*ptr) - sizeof(ptr->param) + + (sizeof(ptr->param[0])*TRIPLE_SIZE(ptr->sizes)); ptr->prev->next = ptr->next; ptr->next->prev = ptr->prev; if (ptr->use) { internal_error(state, ptr, "ptr->use != 0"); } - if (ptr->op == OP_PHI) { - xfree(ptr->left); - } - memset(ptr, -1, sizeof(*ptr)); + memset(ptr, -1, size); xfree(ptr); } @@ -3115,9 +3152,7 @@ static int peek2(struct compile_state *state) return state->token[2].tok; } -static void __eat( - const char *file, const char *func, int line, - struct compile_state *state, int tok) +static void eat(struct compile_state *state, int tok) { int next_tok; int i; @@ -3129,9 +3164,8 @@ static void __eat( if (next_tok == TOK_IDENT) { name2 = state->token[1].ident->name; } - internal_error(state, 0, "@ %s.%s:%d \tfound %s %s expected %s", - file, func, line, - name1, name2, tokens[tok]); + error(state, 0, "\tfound %s %s expected %s", + name1, name2 ,tokens[tok]); } /* Free the old token value */ if (state->token[0].str_len) { @@ -3143,7 +3177,6 @@ static void __eat( memset(&state->token[i], 0, sizeof(state->token[i])); state->token[i].tok = -1; } -#define eat(state, tok) __eat(__FILE__, __func__, __LINE__, state, tok) #warning "FIXME do not hardcode the include paths" static char *include_paths[] = { @@ -3226,89 +3259,7 @@ static void compile_file(struct compile_state *state, char *filename, int local) splice_lines(state); } -/* visibility global/local */ -/* static/auto duration */ -/* typedef, register, inline */ -#define STOR_SHIFT 0 -#define STOR_MASK 0x000f -/* Visibility */ -#define STOR_GLOBAL 0x0001 -/* Duration */ -#define STOR_PERM 0x0002 -/* Storage specifiers */ -#define STOR_AUTO 0x0000 -#define STOR_STATIC 0x0002 -#define STOR_EXTERN 0x0003 -#define STOR_REGISTER 0x0004 -#define STOR_TYPEDEF 0x0008 -#define STOR_INLINE 0x000c - -#define QUAL_SHIFT 4 -#define QUAL_MASK 0x0070 -#define QUAL_NONE 0x0000 -#define QUAL_CONST 0x0010 -#define QUAL_VOLATILE 0x0020 -#define QUAL_RESTRICT 0x0040 - -#define TYPE_SHIFT 8 -#define TYPE_MASK 0x1f00 -#define TYPE_INTEGER(TYPE) (((TYPE) >= TYPE_CHAR) && ((TYPE) <= TYPE_ULLONG)) -#define TYPE_ARITHMETIC(TYPE) (((TYPE) >= TYPE_CHAR) && ((TYPE) <= TYPE_LDOUBLE)) -#define TYPE_UNSIGNED(TYPE) ((TYPE) & 0x0100) -#define TYPE_SIGNED(TYPE) (!TYPE_UNSIGNED(TYPE)) -#define TYPE_MKUNSIGNED(TYPE) ((TYPE) | 0x0100) -#define TYPE_RANK(TYPE) ((TYPE) & ~0x0100) -#define TYPE_PTR(TYPE) (((TYPE) & TYPE_MASK) == TYPE_POINTER) -#define TYPE_DEFAULT 0x0000 -#define TYPE_VOID 0x0100 -#define TYPE_CHAR 0x0200 -#define TYPE_UCHAR 0x0300 -#define TYPE_SHORT 0x0400 -#define TYPE_USHORT 0x0500 -#define TYPE_INT 0x0600 -#define TYPE_UINT 0x0700 -#define TYPE_LONG 0x0800 -#define TYPE_ULONG 0x0900 -#define TYPE_LLONG 0x0a00 /* long long */ -#define TYPE_ULLONG 0x0b00 -#define TYPE_FLOAT 0x0c00 -#define TYPE_DOUBLE 0x0d00 -#define TYPE_LDOUBLE 0x0e00 /* long double */ -#define TYPE_STRUCT 0x1000 -#define TYPE_ENUM 0x1100 -#define TYPE_POINTER 0x1200 -/* For TYPE_POINTER: - * type->left holds the type pointed to. - */ -#define TYPE_FUNCTION 0x1300 -/* For TYPE_FUNCTION: - * type->left holds the return type. - * type->right holds the... - */ -#define TYPE_PRODUCT 0x1400 -/* TYPE_PRODUCT is a basic building block when defining structures - * type->left holds the type that appears first in memory. - * type->right holds the type that appears next in memory. - */ -#define TYPE_OVERLAP 0x1500 -/* TYPE_OVERLAP is a basic building block when defining unions - * type->left and type->right holds to types that overlap - * each other in memory. - */ -#define TYPE_ARRAY 0x1600 -/* TYPE_ARRAY is a basic building block when definitng arrays. - * type->left holds the type we are an array of. - * type-> holds the number of elements. - */ - -#define ELEMENT_COUNT_UNSPECIFIED (~0UL) - -struct type { - unsigned int type; - struct type *left, *right; - ulong_t elements; - struct hash_entry *ident; -}; +/* Type helper functions */ static struct type *new_type( unsigned int type, struct type *left, struct type *right) @@ -3318,7 +3269,8 @@ static struct type *new_type( result->type = type; result->left = left; result->right = right; - result->ident = 0; + result->field_ident = 0; + result->type_ident = 0; return result; } @@ -3353,7 +3305,6 @@ static inline ulong_t mask_uint(ulong_t x) #define MASK_UINT(X) (mask_uint(X)) #define MASK_ULONG(X) (X) - static struct type void_type = { .type = TYPE_VOID }; static struct type char_type = { .type = TYPE_CHAR }; static struct type uchar_type = { .type = TYPE_UCHAR }; @@ -3368,7 +3319,24 @@ static struct triple *variable(struct compile_state *state, struct type *type) { struct triple *result; if ((type->type & STOR_MASK) != STOR_PERM) { - result = triple(state, OP_ADECL, type, 0, 0); + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + result = triple(state, OP_ADECL, type, 0, 0); + } else { + struct type *field; + struct triple **vector; + ulong_t index; + result = new_triple(state, OP_VAL_VEC, type, -1); + vector = &result->param[0]; + + field = type->left; + index = 0; + while((field->type & TYPE_MASK) == TYPE_PRODUCT) { + vector[index] = variable(state, field->left); + field = field->right; + index++; + } + vector[index] = variable(state, field); + } } else { result = triple(state, OP_SDECL, type, 0, 0); @@ -3411,6 +3379,7 @@ static void qual_of(FILE *fp, struct type *type) fprintf(fp, " restrict"); } } + static void name_of(FILE *fp, struct type *type) { stor_of(fp, type); @@ -3463,11 +3432,11 @@ static void name_of(FILE *fp, struct type *type) name_of(fp, type->right); break; case TYPE_ENUM: - fprintf(fp, "enum %s", type->ident->name); + fprintf(fp, "enum %s", type->type_ident->name); qual_of(fp, type); break; case TYPE_STRUCT: - fprintf(fp, "struct %s", type->ident->name); + fprintf(fp, "struct %s", type->type_ident->name); qual_of(fp, type); break; case TYPE_FUNCTION: @@ -3526,6 +3495,9 @@ static size_t align_of(struct compile_state *state, struct type *type) case TYPE_ARRAY: align = align_of(state, type->left); break; + case TYPE_STRUCT: + align = align_of(state, type->left); + break; default: error(state, 0, "alignof not yet defined for type\n"); break; @@ -3589,6 +3561,9 @@ static size_t size_of(struct compile_state *state, struct type *type) size = size_of(state, type->left) * type->elements; } break; + case TYPE_STRUCT: + size = size_of(state, type->left); + break; default: error(state, 0, "sizeof not yet defined for type\n"); break; @@ -3596,6 +3571,86 @@ static size_t size_of(struct compile_state *state, struct type *type) return size; } +static size_t field_offset(struct compile_state *state, + struct type *type, struct hash_entry *field) +{ + size_t size, align, pad; + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + internal_error(state, 0, "field_offset only works on structures"); + } + size = 0; + type = type->left; + while((type->type & TYPE_MASK) == TYPE_PRODUCT) { + if (type->left->field_ident == field) { + type = type->left; + } + size += size_of(state, type->left); + type = type->right; + align = align_of(state, type->left); + pad = align - (size % align); + size += pad; + } + if (type->field_ident != field) { + internal_error(state, 0, "field_offset: member %s not present", + field->name); + } + return size; +} + +static struct type *field_type(struct compile_state *state, + struct type *type, struct hash_entry *field) +{ + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + internal_error(state, 0, "field_type only works on structures"); + } + type = type->left; + while((type->type & TYPE_MASK) == TYPE_PRODUCT) { + if (type->left->field_ident == field) { + type = type->left; + break; + } + type = type->right; + } + if (type->field_ident != field) { + internal_error(state, 0, "field_type: member %s not present", + field->name); + } + return type; +} + +static struct triple *struct_field(struct compile_state *state, + struct triple *decl, struct hash_entry *field) +{ + struct triple **vector; + struct type *type; + ulong_t index; + type = decl->type; + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + return decl; + } + if (decl->op != OP_VAL_VEC) { + internal_error(state, 0, "Invalid struct variable"); + } + if (!field) { + internal_error(state, 0, "Missing structure field"); + } + type = type->left; + vector = &RHS(decl, 0); + index = 0; + while((type->type & TYPE_MASK) == TYPE_PRODUCT) { + if (type->left->field_ident == field) { + type = type->left; + break; + } + index += 1; + type = type->right; + } + if (type->field_ident != field) { + internal_error(state, 0, "field %s not found?", field->name); + } + return vector[index]; +} + static void arrays_complete(struct compile_state *state, struct type *type) { if ((type->type & TYPE_MASK) == TYPE_ARRAY) { @@ -3679,7 +3734,7 @@ static int equiv_types(struct type *left, struct type *right) } /* test for struct/union equality */ else if (type == TYPE_STRUCT) { - return left->ident == right->ident; + return left->type_ident == right->type_ident; } /* Test for equivalent functions */ else if (type == TYPE_FUNCTION) { @@ -3730,7 +3785,7 @@ static struct type *compatible_types(struct type *left, struct type *right) } /* test for struct/union equality */ else if (type == TYPE_STRUCT) { - if (left->ident == right->ident) { + if (left->type_ident == right->type_ident) { result = left; } } @@ -3835,8 +3890,31 @@ static int is_signed(struct type *type) return !!TYPE_SIGNED(type->type); } +/* Is this value located in a register otherwise it must be in memory */ +static int is_in_reg(struct compile_state *state, struct triple *def) +{ + int in_reg; + if (def->op == OP_ADECL) { + in_reg = 1; + } + else if ((def->op == OP_SDECL) || (def->op == OP_DEREF)) { + in_reg = 0; + } + else if (def->op == OP_VAL_VEC) { + in_reg = is_in_reg(state, RHS(def, 0)); + } + else if (def->op == OP_DOT) { + in_reg = is_in_reg(state, RHS(def, 0)); + } + else { + internal_error(state, 0, "unknown expr storage location"); + in_reg = -1; + } + return in_reg; +} + /* Is this a stable variable location otherwise it must be a temporary */ -static int is_stable(struct triple *def) +static int is_stable(struct compile_state *state, struct triple *def) { int ret; ret = 0; @@ -3850,26 +3928,38 @@ static int is_stable(struct triple *def) ret = 1; } else if (def->op == OP_DOT) { - ret = is_stable(def->left); + ret = is_stable(state, RHS(def, 0)); + } + else if (def->op == OP_VAL_VEC) { + struct triple **vector; + ulong_t i; + ret = 1; + vector = &RHS(def, 0); + for(i = 0; i < def->type->elements; i++) { + if (!is_stable(state, vector[i])) { + ret = 0; + break; + } + } } return ret; } -static int is_lvalue(struct triple *def) +static int is_lvalue(struct compile_state *state, struct triple *def) { int ret; ret = 1; if (!def) { return 0; } - if (!is_stable(def)) { + if (!is_stable(state, def)) { return 0; } if (def->type->type & QUAL_CONST) { ret = 0; } else if (def->op == OP_DOT) { - ret = is_lvalue(def->left); + ret = is_lvalue(state, RHS(def, 0)); } return ret; } @@ -3879,7 +3969,7 @@ static void lvalue(struct compile_state *state, struct triple *def) if (!def) { internal_error(state, def, "nothing where lvalue expected?"); } - if (!is_lvalue(def)) { + if (!is_lvalue(state, def)) { error(state, def, "lvalue expected"); } } @@ -3914,16 +4004,11 @@ static struct triple *int_const( } -static struct triple *mk_addr_expr( - struct compile_state *state, struct triple *expr, ulong_t offset) +static struct triple *do_mk_addr_expr(struct compile_state *state, + struct triple *expr, struct type *type, ulong_t offset) { struct triple *result; - struct type *type; - lvalue(state, expr); - type = new_type( - TYPE_POINTER | (expr->type->type & QUAL_MASK), - expr->type, 0); result = 0; if (expr->op == OP_ADECL) { @@ -3935,12 +4020,24 @@ static struct triple *mk_addr_expr( } else if (expr->op == OP_DEREF) { result = triple(state, OP_ADD, type, - expr->left, + RHS(expr, 0), int_const(state, &ulong_type, offset)); } return result; } +static struct triple *mk_addr_expr( + struct compile_state *state, struct triple *expr, ulong_t offset) +{ + struct type *type; + + type = new_type( + TYPE_POINTER | (expr->type->type & QUAL_MASK), + expr->type, 0); + + return do_mk_addr_expr(state, expr, type, offset); +} + static struct triple *mk_deref_expr( struct compile_state *state, struct triple *expr) { @@ -3954,13 +4051,54 @@ static struct triple *mk_deref_expr( return triple(state, OP_DEREF, base_type, expr, 0); } +static struct triple *deref_field( + struct compile_state *state, struct triple *expr, struct hash_entry *field) +{ + struct triple *result; + struct type *type, *member; + if (!field) { + internal_error(state, 0, "No field passed to deref_field"); + } + result = 0; + type = expr->type; + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + error(state, 0, "request for member %s in something not a struct or union", + field->name); + } + member = type->left; + while((member->type & TYPE_MASK) == TYPE_PRODUCT) { + if (member->left->field_ident == field) { + member = member->left; + break; + } + member = member->right; + } + if (member->field_ident != field) { + error(state, 0, "%s is not a member", field->name); + } + if ((type->type & STOR_MASK) == STOR_PERM) { + /* Do the pointer arithmetic to get a deref the field */ + ulong_t offset; + offset = field_offset(state, type, field); + result = do_mk_addr_expr(state, expr, member, offset); + result = mk_deref_expr(state, result); + } + else { + /* Find the variable for the field I want. */ + result = triple(state, OP_DOT, + field_type(state, type, field), expr, 0); + result->u.field = field; + } + return result; +} + static struct triple *read_expr(struct compile_state *state, struct triple *def) { int op; if (!def) { return 0; } - if (!is_stable(def)) { + if (!is_stable(state, def)) { return def; } /* Tranform an array to a pointer to the first element */ @@ -3972,18 +4110,12 @@ static struct triple *read_expr(struct compile_state *state, struct triple *def) def->type->left, 0); return triple(state, OP_ADDRCONST, type, def, 0); } - /* Only values in variables need to be read */ - if (def->op == OP_ADECL) { + if (is_in_reg(state, def)) { op = OP_READ; - } - else if ((def->op == OP_SDECL) || (def->op == OP_DEREF)) { + } else { op = OP_LOAD; } - else { - internal_error(state, 0, "unhandled read expr type"); - op = -1; - } - return triple(state, op, def->type, def, 0); + return triple(state, op, def->type, def, 0); } static void write_compatible(struct compile_state *state, @@ -4005,6 +4137,12 @@ static void write_compatible(struct compile_state *state, else if (equiv_ptrs(dest, rval)) { compatible = 1; } + /* test for struct/union equality */ + else if (((dest->type & TYPE_MASK) == TYPE_STRUCT) && + ((rval->type & TYPE_MASK) == TYPE_STRUCT) && + (dest->type_ident == rval->type_ident)) { + compatible = 1; + } if (!compatible) { error(state, 0, "Incompatible types in assignment"); } @@ -4024,7 +4162,7 @@ static struct triple *write_expr( if (rval->op == OP_LIST) { internal_error(state, 0, "expression of type OP_LIST?"); } - if (!is_lvalue(dest)) { + if (!is_lvalue(state, dest)) { internal_error(state, 0, "writing to a non lvalue?"); } @@ -4032,16 +4170,11 @@ static struct triple *write_expr( /* Now figure out which assignment operator to use */ op = -1; - if (dest->op == OP_ADECL) { + if (is_in_reg(state, dest)) { op = OP_WRITE; - } - else if ((dest->op == OP_SDECL) || (dest->op == OP_DEREF)) { + } else { op = OP_STORE; } - else { - internal_error(state, 0, "unimplemented lvalue type"); - } -#warning "FIXME walk through a list of OP_DOT entries and generate a pointer addition" def = triple(state, op, dest->type, dest, rval); return def; } @@ -4070,7 +4203,7 @@ static struct triple *init_expr( if (!equiv_types(dest->type, rval->type)) { error(state, 0, "Incompatible types in inializer"); } - dest->left = rval; + MISC(dest, 0) = rval; } return def; } @@ -4174,49 +4307,47 @@ static struct triple *cond_expr( if (!result_type) { error(state, 0, "Incompatible types in conditional expression"); } - def = triple(state, OP_COND, result_type, test, - triple(state, OP_PRODUCT, &void_type, left, right)); + def = new_triple(state, OP_COND, result_type, 3); + def->param[0] = test; + def->param[1] = left; + def->param[2] = right; return def; } -static int expr_depth(struct compile_state *state, struct triple *triple) +static int expr_depth(struct compile_state *state, struct triple *ins) { int count; count = 0; - if (!triple) { - return 0; - } - /* All of the internal helper ops that are not removed by - * flatten must be present here. - */ - if (triple->op == OP_READ) { - ; + if (!ins || (ins->id & TRIPLE_FLAG_FLATTENED)) { + count = 0; } - else if (triple->op == OP_DEREF) { - count = expr_depth(state, triple->left) - 1; + else if (ins->op == OP_DEREF) { + count = expr_depth(state, RHS(ins, 0)) - 1; } - else if (triple->op == OP_VAL) { - count = expr_depth(state, triple->left) - 1; + else if (ins->op == OP_VAL) { + count = expr_depth(state, RHS(ins, 0)) - 1; } - else if (triple->op == OP_COMMA) { - int left, right; - left = expr_depth(state, triple->left); - right = expr_depth(state, triple->right); - count = (left >= right)? left : right; + else if (ins->op == OP_COMMA) { + int ldepth, rdepth; + ldepth = expr_depth(state, RHS(ins, 0)); + rdepth = expr_depth(state, RHS(ins, 1)); + count = (ldepth >= rdepth)? ldepth : rdepth; } - else if (triple->op == OP_CALL) { + else if (ins->op == OP_CALL) { /* Don't figure the depth of a call just guess it is huge */ count = 1000; } else { struct triple **expr; - expr = triple_rhs(state, triple, 0); - for(;expr; expr = triple_rhs(state, triple, expr)) { - int depth; - depth = expr_depth(state, *expr); - if (depth > count) { - count = depth; + expr = triple_rhs(state, ins, 0); + for(;expr; expr = triple_rhs(state, ins, expr)) { + if (*expr) { + int depth; + depth = expr_depth(state, *expr); + if (depth > count) { + count = depth; + } } } } @@ -4226,44 +4357,52 @@ static int expr_depth(struct compile_state *state, struct triple *triple) static struct triple *flatten( struct compile_state *state, struct triple *first, struct triple *ptr); -static struct triple *flatten_rhs( +static struct triple *flatten_generic( struct compile_state *state, struct triple *first, struct triple *ptr) { - struct triple **left, **right, **last; - /* Only operations with a rhs should come here */ - last = triple_lhs(state, ptr, 0); - if (last) { - internal_error(state, ptr, "unexpected rhs for: %d %s", + struct rhs_vector { + int depth; + struct triple **ins; + } vector[MAX_RHS]; + int i, rhs, lhs; + /* Only operations with just a rhs should come here */ + rhs = TRIPLE_RHS(ptr->sizes); + lhs = TRIPLE_LHS(ptr->sizes); + if (TRIPLE_SIZE(ptr->sizes) != lhs + rhs) { + internal_error(state, ptr, "unexpected args for: %d %s", ptr->op, tops(ptr->op)); } - /* Collect up the rhs */ - left = triple_rhs(state, ptr, 0); - right = last = 0; - if (left) { - right = triple_rhs(state, ptr, left); - } - if (right) { - last = triple_rhs(state, ptr, right); + /* Find the depth of the rhs elements */ + for(i = 0; i < rhs; i++) { + vector[i].ins = &RHS(ptr, i); + vector[i].depth = expr_depth(state, *vector[i].ins); } - if (last) { - internal_error(state, ptr, "too many rhs arguments for: %d %s", - ptr->op, tops(ptr->op)); - } - if (left && right) { - if (expr_depth(state, *left) >= expr_depth(state, *right)) { - *left = flatten(state, first, *left); - *right = flatten(state, first, *right); + /* Selection sort the rhs */ + for(i = 0; i < rhs; i++) { + int j, max = i; + for(j = i + 1; j < rhs; j++ ) { + if (vector[j].depth > vector[max].depth) { + max = j; + } } - else { - *right = flatten(state, first, *right); - *left = flatten(state, first, *left); + if (max != i) { + struct rhs_vector tmp; + tmp = vector[i]; + vector[i] = vector[max]; + vector[max] = tmp; } - use_triple(*left, ptr); - use_triple(*right, ptr); } - else if (left) { - *left = flatten(state, first, *left); - use_triple(*left, ptr); + /* Now flatten the rhs elements */ + for(i = 0; i < rhs; i++) { + *vector[i].ins = flatten(state, first, *vector[i].ins); + use_triple(*vector[i].ins, ptr); + } + + /* Now flatten the lhs elements */ + for(i = 0; i < lhs; i++) { + struct triple **ins = &LHS(ptr, i); + *ins = flatten(state, first, *ins); + use_triple(*ins, ptr); } return ptr; } @@ -4275,23 +4414,21 @@ static struct triple *flatten_land( struct triple *val, *test, *jmp, *label1, *end; /* Find the triples */ - left = ptr->left; - right = ptr->right; + left = RHS(ptr, 0); + right = RHS(ptr, 1); /* Generate the needed triples */ end = label(state); /* Thread the triples together */ - val = flatten(state, first, variable(state, ptr->type)); - left = flatten(state, first, write_expr(state, val, left)); - test = flatten(state, first, + val = flatten(state, first, variable(state, ptr->type)); + left = flatten(state, first, write_expr(state, val, left)); + test = flatten(state, first, lfalse_expr(state, read_expr(state, val))); - jmp = flatten(state, first, - triple(state, OP_BRANCH, &void_type, end, test)); - label1 = flatten(state, first, label(state)); - right = flatten(state, first, write_expr(state, val, right)); - jmp->left = flatten(state, first, end); - + jmp = flatten(state, first, branch(state, end, test)); + label1 = flatten(state, first, label(state)); + right = flatten(state, first, write_expr(state, val, right)); + TARG(jmp, 0) = flatten(state, first, end); /* Now give the caller something to chew on */ return read_expr(state, val); @@ -4304,20 +4441,19 @@ static struct triple *flatten_lor( struct triple *val, *jmp, *label1, *end; /* Find the triples */ - left = ptr->left; - right = ptr->right; + left = RHS(ptr, 0); + right = RHS(ptr, 1); /* Generate the needed triples */ end = label(state); /* Thread the triples together */ - val = flatten(state, first, variable(state, ptr->type)); - left = flatten(state, first, write_expr(state, val, left)); - jmp = flatten(state, first, - triple(state, OP_BRANCH, &void_type, end, left)); - label1 = flatten(state, first, label(state)); - right = flatten(state, first, write_expr(state, val, right)); - jmp->left = flatten(state, first, end); + val = flatten(state, first, variable(state, ptr->type)); + left = flatten(state, first, write_expr(state, val, left)); + jmp = flatten(state, first, branch(state, end, left)); + label1 = flatten(state, first, label(state)); + right = flatten(state, first, write_expr(state, val, right)); + TARG(jmp, 0) = flatten(state, first, end); /* Now give the caller something to chew on */ @@ -4329,34 +4465,28 @@ static struct triple *flatten_cond( { struct triple *test, *left, *right; struct triple *val, *mv1, *jmp1, *label1, *mv2, *middle, *jmp2, *end; - if (ptr->right->op != OP_PRODUCT) { - internal_error(state, 0, "Improper conditional expression"); - } /* Find the triples */ - test = ptr->left; - left = ptr->right->left; - right = ptr->right->right; + test = RHS(ptr, 0); + left = RHS(ptr, 1); + right = RHS(ptr, 2); /* Generate the needed triples */ end = label(state); middle = label(state); /* Thread the triples together */ - val = flatten(state, first, variable(state, ptr->type)); - test = flatten(state, first, test); - jmp1 = flatten(state, first, - triple(state, OP_BRANCH, &void_type, middle, test)); - label1 = flatten(state, first, label(state)); - left = flatten(state, first, left); - mv1 = flatten(state, first, write_expr(state, val, left)); - jmp2 = flatten(state, first, - triple(state, OP_BRANCH, &void_type, end, 0)); - jmp1->left = flatten(state, first, middle); - right = flatten(state, first, right); - mv2 = flatten(state, first, write_expr(state, val, right)); - jmp2->left = flatten(state, first, end); - + val = flatten(state, first, variable(state, ptr->type)); + test = flatten(state, first, test); + jmp1 = flatten(state, first, branch(state, middle, test)); + label1 = flatten(state, first, label(state)); + left = flatten(state, first, left); + mv1 = flatten(state, first, write_expr(state, val, left)); + jmp2 = flatten(state, first, branch(state, end, 0)); + TARG(jmp1, 0) = flatten(state, first, middle); + right = flatten(state, first, right); + mv2 = flatten(state, first, write_expr(state, val, right)); + TARG(jmp2, 0) = flatten(state, first, end); /* Now give the caller something to chew on */ return read_expr(state, val); @@ -4379,31 +4509,37 @@ struct triple *copy_func(struct compile_state *state, struct triple *ofunc) /* Make a new copy of the old function */ nfunc = triple(state, OP_LIST, ofunc->type, 0, 0); nfirst = 0; - ofirst = old = ofunc->left; + ofirst = old = RHS(ofunc, 0); do { struct triple *new; - new = build_triple(state, old->op, old->type, 0, 0, + int old_rhs; + old_rhs = TRIPLE_RHS(old->sizes); + new = alloc_triple(state, old->op, old->type, old_rhs, old->filename, old->line, old->col); if (IS_CONST_OP(new->op)) { memcpy(&new->u, &old->u, sizeof(new->u)); } #warning "WISHLIST find a way to handle SDECL without a special case..." + /* The problem is that I don't flatten the misc field, + * so I cannot look the value the misc field should have. + */ else if (new->op == OP_SDECL) { - new->left = old->left; + MISC(new, 0) = MISC(old, 0); } if (!nfirst) { - nfunc->left = nfirst = new; + RHS(nfunc, 0) = nfirst = new; } else { insert_triple(state, nfirst, new); } + new->id |= TRIPLE_FLAG_FLATTENED; /* During the copy remember new as user of old */ use_triple(old, new); /* Populate the return type if present */ - if (old == ofunc->right) { - nfunc->right = new; + if (old == MISC(ofunc, 0)) { + MISC(nfunc, 0) = new; } old = old->next; } while(old != ofirst); @@ -4412,36 +4548,22 @@ struct triple *copy_func(struct compile_state *state, struct triple *ofunc) old = ofirst; new = nfirst; do { + struct triple **oexpr, **nexpr; + int count, i; /* Lookup where the copy is, to join pointers */ - if (!new->left && old->left && old->left->use) { - new->left = old->left->use->member; - if (new->left == old) { - internal_error(state, 0, "new == old?"); + count = TRIPLE_SIZE(old->sizes); + for(i = 0; i < count; i++) { + oexpr = &old->param[i]; + nexpr = &new->param[i]; + if (!*nexpr && *oexpr && (*oexpr)->use) { + *nexpr = (*oexpr)->use->member; + if (*nexpr == old) { + internal_error(state, 0, "new == old?"); + } + use_triple(*nexpr, new); } - } - if (!new->right && old->right && old->right->use) { - new->right = old->right->use->member; - if (new->right == old) { - internal_error(state, 0, "new == old?"); - } - } - if (!new->left && old->left) { - internal_error(state, 0, "Could not copy left"); - } - if (!new->right && old->right) { - internal_error(state, 0, "Could not copy right"); - } - if (new->op != old->op) { - internal_error(state, 0, "Could not copy op?"); - } - if (!new->next && old->next) { - internal_error(state, 0, "Could not copy next"); - } - use_triple(new->left, new); - use_triple(new->right, new); - if (new->op == OP_BRANCH) { - if (new->right) { - use_triple(new->next, new); + if (!*nexpr && *oexpr) { + internal_error(state, 0, "Could not copy %d\n", i); } } old = old->next; @@ -4463,35 +4585,40 @@ static struct triple *flatten_call( struct compile_state *state, struct triple *first, struct triple *ptr) { /* Inline the function call */ - struct triple *ofunc, *nfunc, *nfirst, *args, *param, *result; + struct type *ptype; + struct triple *ofunc, *nfunc, *nfirst, *param, *result; struct triple *end, *nend; - int done; + int pvals, i; /* Find the triples */ - ofunc = ptr->left; - args = ptr->right; + ofunc = MISC(ptr, 0); if (ofunc->op != OP_LIST) { internal_error(state, 0, "improper function"); } nfunc = copy_func(state, ofunc); - nfirst = nfunc->left->next; - param = nfunc->left->next; + nfirst = RHS(nfunc, 0)->next; /* Prepend the parameter reading into the new function list */ - while(args) { + ptype = nfunc->type->right; + param = RHS(nfunc, 0)->next; + pvals = TRIPLE_RHS(ptr->sizes); + for(i = 0; i < pvals; i++) { + struct type *atype; struct triple *arg; - arg = args; - done = 1; - if (args->op == OP_PRODUCT) { - arg = args->left; + atype = ptype; + if ((ptype->type & TYPE_MASK) == TYPE_PRODUCT) { + atype = ptype->left; } - flatten(state, nfirst, - write_expr(state, param, arg)); + while((param->type->type & TYPE_MASK) != (atype->type & TYPE_MASK)) { + param = param->next; + } + arg = RHS(ptr, i); + flatten(state, nfirst, write_expr(state, param, arg)); + ptype = ptype->right; param = param->next; - args = (args->op == OP_PRODUCT)? args->right : 0; - } + } result = 0; if ((nfunc->type->left->type & TYPE_MASK) != TYPE_VOID) { - result = read_expr(state, nfunc->right); + result = read_expr(state, MISC(nfunc,0)); } #if 0 fprintf(stdout, "\n"); @@ -4502,9 +4629,9 @@ static struct triple *flatten_call( #endif /* Get rid of the extra triples */ - nfirst = nfunc->left->next; - free_triple(state, nfunc->left); - nfunc->left = 0; + nfirst = RHS(nfunc, 0)->next; + free_triple(state, RHS(nfunc, 0)); + RHS(nfunc, 0) = 0; free_triple(state, nfunc); /* Append the new function list onto the return list */ @@ -4526,21 +4653,25 @@ static struct triple *flatten( return 0; do { orig_ptr = ptr; + /* Only flatten triples once */ + if (ptr->id & TRIPLE_FLAG_FLATTENED) { + return ptr; + } switch(ptr->op) { case OP_WRITE: case OP_STORE: - ptr->right = flatten(state, first, ptr->right); - ptr->left = flatten(state, first, ptr->left); - use_triple(ptr->left, ptr); - use_triple(ptr->right, ptr); + RHS(ptr, 0) = flatten(state, first, RHS(ptr, 0)); + LHS(ptr, 0) = flatten(state, first, LHS(ptr, 0)); + use_triple(LHS(ptr, 0), ptr); + use_triple(RHS(ptr, 0), ptr); break; case OP_COMMA: - ptr->left = flatten(state, first, ptr->left); - ptr = ptr->right; + RHS(ptr, 0) = flatten(state, first, RHS(ptr, 0)); + ptr = RHS(ptr, 1); break; case OP_VAL: - ptr->left = flatten(state, first, ptr->left); - return ptr->right; + RHS(ptr, 0) = flatten(state, first, RHS(ptr, 0)); + return MISC(ptr, 0); break; case OP_LAND: ptr = flatten_land(state, first, ptr); @@ -4556,49 +4687,51 @@ static struct triple *flatten( break; case OP_READ: case OP_LOAD: - ptr->left = flatten(state, first, ptr->left); - use_triple(ptr->left, ptr); + RHS(ptr, 0) = flatten(state, first, RHS(ptr, 0)); + use_triple(RHS(ptr, 0), ptr); break; case OP_BRANCH: - use_triple(ptr->left, ptr); - use_triple(ptr->right, ptr); - if (ptr->next != ptr) { - use_triple(ptr->next, ptr); + use_triple(TARG(ptr, 0), ptr); + if (TRIPLE_RHS(ptr->sizes)) { + use_triple(RHS(ptr, 0), ptr); + if (ptr->next != ptr) { + use_triple(ptr->next, ptr); + } } break; - case OP_ADDRCONST: - ptr->left = flatten(state, first, ptr->left); - use_triple(ptr->left, ptr); - break; case OP_BLOBCONST: ptr = triple(state, OP_SDECL, ptr->type, ptr, 0); - use_triple(ptr->left, ptr); + use_triple(MISC(ptr, 0), ptr); break; case OP_DEREF: /* Since OP_DEREF is just a marker delete it when I flatten it */ - ptr = ptr->left; - orig_ptr->left = 0; + ptr = RHS(ptr, 0); + RHS(orig_ptr, 0) = 0; free_triple(state, orig_ptr); break; - case OP_PRODUCT: case OP_DOT: - internal_error(state, 0, "unknown expression type: %d %s", - ptr->op, tops(ptr->op)); + { + struct triple *base; + base = RHS(ptr, 0); + base = flatten(state, first, base); + if (base->op == OP_VAL_VEC) { + ptr = struct_field(state, base, ptr->u.field); + } break; + } case OP_SDECL: case OP_ADECL: - /* Don't flatten already flattened decls */ - if ((ptr->next != ptr) || (ptr->prev != ptr)) { - return ptr; - } break; default: /* Flatten the easy cases we don't override */ - ptr = flatten_rhs(state, first, ptr); + ptr = flatten_generic(state, first, ptr); break; } } while(ptr && (ptr != orig_ptr)); - insert_triple(state, first, ptr); + if (ptr) { + insert_triple(state, first, ptr); + ptr->id |= TRIPLE_FLAG_FLATTENED; + } return ptr; } @@ -4823,7 +4956,7 @@ static int constants_equal(struct compile_state *state, break; } case OP_ADDRCONST: - if ((left->left == right->left) && + if ((RHS(left, 0) == RHS(right, 0)) && (left->u.cval == right->u.cval)) { equal = 1; } @@ -4936,10 +5069,23 @@ static void unuse_rhs(struct compile_state *state, struct triple *ins) struct triple **expr; expr = triple_rhs(state, ins, 0); for(;expr;expr = triple_rhs(state, ins, expr)) { + if (*expr) { + unuse_triple(*expr, ins); + *expr = 0; + } + } +} + +static void unuse_lhs(struct compile_state *state, struct triple *ins) +{ + struct triple **expr; + expr = triple_lhs(state, ins, 0); + for(;expr;expr = triple_lhs(state, ins, expr)) { unuse_triple(*expr, ins); *expr = 0; } } + static void check_lhs(struct compile_state *state, struct triple *ins) { struct triple **expr; @@ -4960,13 +5106,13 @@ static void check_targ(struct compile_state *state, struct triple *ins) static void wipe_ins(struct compile_state *state, struct triple *ins) { - check_lhs(state, ins); + /* Becareful which instructions you replace the wiped + * instruction with, as there are not enough slots + * in all instructions to hold all others. + */ check_targ(state, ins); unuse_rhs(state, ins); - if (ins->op == OP_PHI) { - xfree(ins->left); - ins->left = 0; - } + unuse_lhs(state, ins); } static void mkcopy(struct compile_state *state, @@ -4974,8 +5120,9 @@ static void mkcopy(struct compile_state *state, { wipe_ins(state, ins); ins->op = OP_COPY; - ins->left = rhs; - use_triple(ins->left, ins); + ins->sizes = TRIPLE_SIZES(0, 1, 0, 0); + RHS(ins, 0) = rhs; + use_triple(RHS(ins, 0), ins); } static void mkconst(struct compile_state *state, @@ -4986,6 +5133,7 @@ static void mkconst(struct compile_state *state, } wipe_ins(state, ins); ins->op = OP_INTCONST; + ins->sizes = TRIPLE_SIZES(0, 0, 0, 0); ins->u.cval = value; } @@ -4994,11 +5142,127 @@ static void mkaddr_const(struct compile_state *state, { wipe_ins(state, ins); ins->op = OP_ADDRCONST; - ins->left = sdecl; + ins->sizes = TRIPLE_SIZES(0, 1, 0, 0); + RHS(ins, 0) = sdecl; ins->u.cval = value; use_triple(sdecl, ins); } +/* Transform multicomponent variables into simple register variables */ +static void flatten_structures(struct compile_state *state) +{ + struct triple *ins, *first; + first = RHS(state->main_function, 0); + ins = first; + /* Pass one expand structure values into valvecs. + */ + ins = first; + do { + struct triple *next; + next = ins->next; + if ((ins->type->type & TYPE_MASK) == TYPE_STRUCT) { + if (ins->op == OP_VAL_VEC) { + /* Do nothing */ + } + else if ((ins->op == OP_LOAD) || (ins->op == OP_READ)) { + struct triple *def, **vector; + struct type *tptr; + int op; + ulong_t i; + + op = ins->op; + def = RHS(ins, 0); + next = alloc_triple(state, OP_VAL_VEC, ins->type, -1, + ins->filename, ins->line, ins->col); + + vector = &RHS(next, 0); + tptr = next->type->left; + for(i = 0; i < next->type->elements; i++) { + struct triple *sfield; + struct type *mtype; + mtype = tptr; + if ((mtype->type & TYPE_MASK) == TYPE_PRODUCT) { + mtype = mtype->left; + } + sfield = deref_field(state, def, mtype->field_ident); + + vector[i] = triple( + state, op, mtype, sfield, 0); + vector[i]->filename = next->filename; + vector[i]->line = next->line; + vector[i]->col = next->col; + tptr = tptr->right; + } + propogate_use(state, ins, next); + flatten(state, ins, next); + free_triple(state, ins); + } + else if ((ins->op == OP_STORE) || (ins->op == OP_WRITE)) { + struct triple *src, *dst, **vector; + struct type *tptr; + int op; + ulong_t i; + + op = ins->op; + src = RHS(ins, 0); + dst = LHS(ins, 0); + next = alloc_triple(state, OP_VAL_VEC, ins->type, -1, + ins->filename, ins->line, ins->col); + + vector = &RHS(next, 0); + tptr = next->type->left; + for(i = 0; i < ins->type->elements; i++) { + struct triple *dfield, *sfield; + struct type *mtype; + mtype = tptr; + if ((mtype->type & TYPE_MASK) == TYPE_PRODUCT) { + mtype = mtype->left; + } + sfield = deref_field(state, src, mtype->field_ident); + dfield = deref_field(state, dst, mtype->field_ident); + vector[i] = triple( + state, op, mtype, dfield, sfield); + vector[i]->filename = next->filename; + vector[i]->line = next->line; + vector[i]->col = next->col; + tptr = tptr->right; + } + propogate_use(state, ins, next); + flatten(state, ins, next); + free_triple(state, ins); + } + } + ins = next; + } while(ins != first); + /* Pass two flatten the valvecs. + */ + ins = first; + do { + struct triple *next; + next = ins->next; + if (ins->op == OP_VAL_VEC) { + release_triple(state, ins); + } + ins = next; + } while(ins != first); + /* Pass three verify the state and set ->id to 0. + */ + ins = first; + do { + ins->id = 0; + if ((ins->type->type & TYPE_MASK) == TYPE_STRUCT) { + internal_error(state, 0, "STRUCT_TYPE remains?"); + } + if (ins->op == OP_DOT) { + internal_error(state, 0, "OP_DOT remains?"); + } + if (ins->op == OP_VAL_VEC) { + internal_error(state, 0, "OP_VAL_VEC remains?"); + } + ins = ins->next; + } while(ins != first); +} + /* For those operations that cannot be simplified */ static void simplify_noop(struct compile_state *state, struct triple *ins) { @@ -5007,225 +5271,225 @@ static void simplify_noop(struct compile_state *state, struct triple *ins) static void simplify_smul(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && !is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && !is_const(RHS(ins, 1))) { struct triple *tmp; - tmp = ins->left; - ins->left = ins->right; - ins->right = tmp; + tmp = RHS(ins, 0); + RHS(ins, 0) = RHS(ins, 1); + RHS(ins, 1) = tmp; } - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left * right); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { mkconst(state, ins, 0); } - else if (is_one(ins->right)) { - mkcopy(state, ins, ins->left); + else if (is_one(RHS(ins, 1))) { + mkcopy(state, ins, RHS(ins, 0)); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, tlog2(ins->right)); + val = int_const(state, ins->type, tlog2(RHS(ins, 1))); ins->op = OP_SL; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_umul(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && !is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && !is_const(RHS(ins, 1))) { struct triple *tmp; - tmp = ins->left; - ins->left = ins->right; - ins->right = tmp; + tmp = RHS(ins, 0); + RHS(ins, 0) = RHS(ins, 1); + RHS(ins, 1) = tmp; } - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left * right); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { mkconst(state, ins, 0); } - else if (is_one(ins->right)) { - mkcopy(state, ins, ins->left); + else if (is_one(RHS(ins, 1))) { + mkcopy(state, ins, RHS(ins, 0)); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, tlog2(ins->right)); + val = int_const(state, ins->type, tlog2(RHS(ins, 1))); ins->op = OP_SL; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_sdiv(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left / right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 0); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { error(state, ins, "division by zero"); } - else if (is_one(ins->right)) { - mkcopy(state, ins, ins->left); + else if (is_one(RHS(ins, 1))) { + mkcopy(state, ins, RHS(ins, 0)); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, tlog2(ins->right)); + val = int_const(state, ins->type, tlog2(RHS(ins, 1))); ins->op = OP_SSR; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_udiv(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left / right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 0); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { error(state, ins, "division by zero"); } - else if (is_one(ins->right)) { - mkcopy(state, ins, ins->left); + else if (is_one(RHS(ins, 1))) { + mkcopy(state, ins, RHS(ins, 0)); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, tlog2(ins->right)); + val = int_const(state, ins->type, tlog2(RHS(ins, 1))); ins->op = OP_USR; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_smod(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left % right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 0); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { error(state, ins, "division by zero"); } - else if (is_one(ins->right)) { + else if (is_one(RHS(ins, 1))) { mkconst(state, ins, 0); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, ins->right->u.cval - 1); + val = int_const(state, ins->type, RHS(ins, 1)->u.cval - 1); ins->op = OP_AND; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_umod(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left % right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 0); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { error(state, ins, "division by zero"); } - else if (is_one(ins->right)) { + else if (is_one(RHS(ins, 1))) { mkconst(state, ins, 0); } - else if (is_pow2(ins->right)) { + else if (is_pow2(RHS(ins, 1))) { struct triple *val; - val = int_const(state, ins->type, ins->right->u.cval - 1); + val = int_const(state, ins->type, RHS(ins, 1)->u.cval - 1); ins->op = OP_AND; insert_triple(state, ins, val); - unuse_triple(ins->right, ins); + unuse_triple(RHS(ins, 1), ins); use_triple(val, ins); - ins->right = val; + RHS(ins, 1) = val; } } static void simplify_add(struct compile_state *state, struct triple *ins) { /* start with the pointer on the left */ - if (is_pointer(ins->right)) { + if (is_pointer(RHS(ins, 1))) { struct triple *tmp; - tmp = ins->left; - ins->left = ins->right; - ins->right = tmp; + tmp = RHS(ins, 0); + RHS(ins, 0) = RHS(ins, 1); + RHS(ins, 1) = tmp; } - if (is_const(ins->left) && is_const(ins->right)) { - if (!is_pointer(ins->left)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { + if (!is_pointer(RHS(ins, 0))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left + right); } - else { + else /* op == OP_ADDRCONST */ { struct triple *sdecl; ulong_t left, right; - sdecl = ins->left->left; - left = ins->left->u.cval; - right = ins->right->u.cval; + sdecl = RHS(RHS(ins, 0), 0); + left = RHS(ins, 0)->u.cval; + right = RHS(ins, 1)->u.cval; mkaddr_const(state, ins, sdecl, left + right); } } - else if (is_const(ins->left) && !is_const(ins->right)) { + else if (is_const(RHS(ins, 0)) && !is_const(RHS(ins, 1))) { struct triple *tmp; - tmp = ins->right; - ins->right = ins->left; - ins->left = tmp; + tmp = RHS(ins, 1); + RHS(ins, 1) = RHS(ins, 0); + RHS(ins, 0) = tmp; } } static void simplify_sub(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { - if (!is_pointer(ins->left)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { + if (!is_pointer(RHS(ins, 0))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left - right); } - else { + else /* op == OP_ADDRCONST */ { struct triple *sdecl; ulong_t left, right; - sdecl = ins->left->left; - left = ins->left->u.cval; - right = ins->right->u.cval; + sdecl = RHS(RHS(ins, 0), 0); + left = RHS(ins, 0)->u.cval; + right = RHS(ins, 1)->u.cval; mkaddr_const(state, ins, sdecl, left - right); } } @@ -5233,196 +5497,196 @@ static void simplify_sub(struct compile_state *state, struct triple *ins) static void simplify_sl(struct compile_state *state, struct triple *ins) { - if (is_const(ins->right)) { + if (is_const(RHS(ins, 1))) { ulong_t right; - right = read_const(state, ins, &ins->right); + right = read_const(state, ins, &RHS(ins, 1)); if (right >= (size_of(state, ins->type)*8)) { warning(state, ins, "left shift count >= width of type"); } } - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left << right); } } static void simplify_usr(struct compile_state *state, struct triple *ins) { - if (is_const(ins->right)) { + if (is_const(RHS(ins, 1))) { ulong_t right; - right = read_const(state, ins, &ins->right); + right = read_const(state, ins, &RHS(ins, 1)); if (right >= (size_of(state, ins->type)*8)) { warning(state, ins, "right shift count >= width of type"); } } - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left >> right); } } static void simplify_ssr(struct compile_state *state, struct triple *ins) { - if (is_const(ins->right)) { + if (is_const(RHS(ins, 1))) { ulong_t right; - right = read_const(state, ins, &ins->right); + right = read_const(state, ins, &RHS(ins, 1)); if (right >= (size_of(state, ins->type)*8)) { warning(state, ins, "right shift count >= width of type"); } } - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left >> right); } } static void simplify_and(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left & right); } } static void simplify_or(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left | right); } } static void simplify_xor(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left ^ right); } } static void simplify_pos(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { - mkconst(state, ins, ins->left->u.cval); + if (is_const(RHS(ins, 0))) { + mkconst(state, ins, RHS(ins, 0)->u.cval); } else { - mkcopy(state, ins, ins->left); + mkcopy(state, ins, RHS(ins, 0)); } } static void simplify_neg(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, -left); } - else if (ins->left->op == OP_NEG) { - mkcopy(state, ins, ins->left->left); + else if (RHS(ins, 0)->op == OP_NEG) { + mkcopy(state, ins, RHS(RHS(ins, 0), 0)); } } static void simplify_invert(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, ~left); } } static void simplify_eq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left == right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 1); } } static void simplify_noteq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left != right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 0); } } static void simplify_sless(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left < right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 0); } } static void simplify_uless(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left < right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 1); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 0); } } static void simplify_smore(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left > right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 0); } } static void simplify_umore(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left > right); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { mkconst(state, ins, 1); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 0); } } @@ -5430,120 +5694,120 @@ static void simplify_umore(struct compile_state *state, struct triple *ins) static void simplify_slesseq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left <= right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 1); } } static void simplify_ulesseq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left <= right); } - else if (is_zero(ins->left)) { + else if (is_zero(RHS(ins, 0))) { mkconst(state, ins, 1); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 1); } } static void simplify_smoreeq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 0))) { long_t left, right; - left = read_sconst(ins, &ins->left); - right = read_sconst(ins, &ins->right); + left = read_sconst(ins, &RHS(ins, 0)); + right = read_sconst(ins, &RHS(ins, 1)); mkconst(state, ins, left >= right); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 1); } } static void simplify_umoreeq(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left) && is_const(ins->right)) { + if (is_const(RHS(ins, 0)) && is_const(RHS(ins, 1))) { ulong_t left, right; - left = read_const(state, ins, &ins->left); - right = read_const(state, ins, &ins->right); + left = read_const(state, ins, &RHS(ins, 0)); + right = read_const(state, ins, &RHS(ins, 1)); mkconst(state, ins, left >= right); } - else if (is_zero(ins->right)) { + else if (is_zero(RHS(ins, 1))) { mkconst(state, ins, 1); } - else if (ins->left == ins->right) { + else if (RHS(ins, 0) == RHS(ins, 1)) { mkconst(state, ins, 1); } } static void simplify_lfalse(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, left == 0); } /* Otherwise if I am the only user... */ - else if ((ins->left->use->member == ins) && (ins->left->use->next == 0)) { + else if ((RHS(ins, 0)->use->member == ins) && (RHS(ins, 0)->use->next == 0)) { int need_copy = 1; /* Invert a boolean operation */ - switch(ins->left->op) { - case OP_LTRUE: ins->left->op = OP_LFALSE; break; - case OP_LFALSE: ins->left->op = OP_LTRUE; break; - case OP_EQ: ins->left->op = OP_NOTEQ; break; - case OP_NOTEQ: ins->left->op = OP_EQ; break; - case OP_SLESS: ins->left->op = OP_SMOREEQ; break; - case OP_ULESS: ins->left->op = OP_UMOREEQ; break; - case OP_SMORE: ins->left->op = OP_SLESSEQ; break; - case OP_UMORE: ins->left->op = OP_ULESSEQ; break; - case OP_SLESSEQ: ins->left->op = OP_SMORE; break; - case OP_ULESSEQ: ins->left->op = OP_UMORE; break; - case OP_SMOREEQ: ins->left->op = OP_SLESS; break; - case OP_UMOREEQ: ins->left->op = OP_ULESS; break; + switch(RHS(ins, 0)->op) { + case OP_LTRUE: RHS(ins, 0)->op = OP_LFALSE; break; + case OP_LFALSE: RHS(ins, 0)->op = OP_LTRUE; break; + case OP_EQ: RHS(ins, 0)->op = OP_NOTEQ; break; + case OP_NOTEQ: RHS(ins, 0)->op = OP_EQ; break; + case OP_SLESS: RHS(ins, 0)->op = OP_SMOREEQ; break; + case OP_ULESS: RHS(ins, 0)->op = OP_UMOREEQ; break; + case OP_SMORE: RHS(ins, 0)->op = OP_SLESSEQ; break; + case OP_UMORE: RHS(ins, 0)->op = OP_ULESSEQ; break; + case OP_SLESSEQ: RHS(ins, 0)->op = OP_SMORE; break; + case OP_ULESSEQ: RHS(ins, 0)->op = OP_UMORE; break; + case OP_SMOREEQ: RHS(ins, 0)->op = OP_SLESS; break; + case OP_UMOREEQ: RHS(ins, 0)->op = OP_ULESS; break; default: need_copy = 0; break; } if (need_copy) { - mkcopy(state, ins, ins->left); + mkcopy(state, ins, RHS(ins, 0)); } } } static void simplify_ltrue (struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, left != 0); } - else switch(ins->left->op) { + else switch(RHS(ins, 0)->op) { case OP_LTRUE: case OP_LFALSE: case OP_EQ: case OP_NOTEQ: case OP_SLESS: case OP_ULESS: case OP_SMORE: case OP_UMORE: case OP_SLESSEQ: case OP_ULESSEQ: case OP_SMOREEQ: case OP_UMOREEQ: - mkcopy(state, ins, ins->left); + mkcopy(state, ins, RHS(ins, 0)); } } static void simplify_copy(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { - switch(ins->left->op) { + if (is_const(RHS(ins, 0))) { + switch(RHS(ins, 0)->op) { case OP_INTCONST: { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, left); break; } @@ -5551,7 +5815,7 @@ static void simplify_copy(struct compile_state *state, struct triple *ins) { struct triple *sdecl; ulong_t offset; - sdecl = ins->left; + sdecl = RHS(ins, 0); offset = ins->u.cval; mkaddr_const(state, ins, sdecl, offset); break; @@ -5563,11 +5827,6 @@ static void simplify_copy(struct compile_state *state, struct triple *ins) } } -static void simplify_dot(struct compile_state *state, struct triple *ins) -{ - FINISHME(); -} - static void simplify_branch(struct compile_state *state, struct triple *ins) { struct block *block; @@ -5584,29 +5843,31 @@ static void simplify_branch(struct compile_state *state, struct triple *ins) */ block = ins->u.block; - if (ins->right && is_const(ins->right)) { + if (TRIPLE_RHS(ins->sizes) && is_const(RHS(ins, 0))) { + struct triple *targ; ulong_t value; - value = read_const(state, ins, &ins->right); - unuse_triple(ins->right, ins); - ins->right = 0; + value = read_const(state, ins, &RHS(ins, 0)); + unuse_triple(RHS(ins, 0), ins); + targ = TARG(ins, 0); + ins->sizes = TRIPLE_SIZES(0, 0, 0, 1); if (value) { unuse_triple(ins->next, ins); + TARG(ins, 0) = targ; } else { - unuse_triple(ins->left, ins); - ins->left = ins->next; + unuse_triple(targ, ins); + TARG(ins, 0) = ins->next; } #warning "FIXME handle the case of making a branch unconditional" } - if (ins->left == ins->next) { - unuse_triple(ins->left, ins); - if (ins->right) { - unuse_triple(ins->right, ins); + if (TARG(ins, 0) == ins->next) { + unuse_triple(ins->next, ins); + if (TRIPLE_RHS(ins->sizes)) { + unuse_triple(RHS(ins, 0), ins); unuse_triple(ins->next, ins); } - ins->op = OP_NOOP; - ins->left = 0; - ins->right = 0; + ins->sizes = TRIPLE_SIZES(0, 0, 0, 0); + ins->op = OP_NOOP; if (ins->use) { internal_error(state, ins, "noop use != 0"); } @@ -5619,12 +5880,12 @@ static void simplify_phi(struct compile_state *state, struct triple *ins) struct triple **expr; ulong_t value; expr = triple_rhs(state, ins, 0); - if (!is_const(*expr)) { + if (!*expr || !is_const(*expr)) { return; } value = read_const(state, ins, expr); for(;expr;expr = triple_rhs(state, ins, expr)) { - if (!is_const(*expr)) { + if (!*expr || !is_const(*expr)) { return; } if (value != read_const(state, ins, expr)) { @@ -5637,18 +5898,18 @@ static void simplify_phi(struct compile_state *state, struct triple *ins) static void simplify_bsf(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, bsf(left)); } } static void simplify_bsr(struct compile_state *state, struct triple *ins) { - if (is_const(ins->left)) { + if (is_const(RHS(ins, 0))) { ulong_t left; - left = read_const(state, ins, &ins->left); + left = read_const(state, ins, &RHS(ins, 0)); mkconst(state, ins, bsr(left)); } } @@ -5712,10 +5973,6 @@ static const simplify_t table_simplify[] = { #endif #if 0 -#define simplify_dot simplify_noop -#endif - -#if 0 #define simplify_branch simplify_noop #endif @@ -5771,7 +6028,10 @@ static const simplify_t table_simplify[] = { [OP_WRITE ] = simplify_noop, [OP_READ ] = simplify_noop, [OP_COPY ] = simplify_copy, -[OP_DOT ] = simplify_dot, +[OP_PIECE ] = simplify_noop, + +[OP_DOT ] = simplify_noop, +[OP_VAL_VEC ] = simplify_noop, [OP_LIST ] = simplify_noop, [OP_BRANCH ] = simplify_branch, @@ -5787,7 +6047,10 @@ static const simplify_t table_simplify[] = { [OP_OUTW ] = simplify_noop, [OP_OUTL ] = simplify_noop, [OP_BSF ] = simplify_bsf, -[OP_BSR ] = simplify_bsr, +[OP_BSR ] = simplify_bsr, +[OP_RDMSR ] = simplify_noop, +[OP_WRMSR ] = simplify_noop, +[OP_HLT ] = simplify_noop, }; static void simplify(struct compile_state *state, struct triple *ins) @@ -5815,7 +6078,7 @@ static void simplify(struct compile_state *state, struct triple *ins) static void simplify_all(struct compile_state *state) { struct triple *ins, *first; - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { simplify(state, ins); @@ -5828,134 +6091,203 @@ static void simplify_all(struct compile_state *state) * ============================ */ -static void register_builtin_unary(struct compile_state *state, - const char *name, int op, struct type *result, struct type *a1type) +static void register_builtin_function(struct compile_state *state, + const char *name, int op, struct type *rtype, ...) { - struct type *ftype, *rtype, *atype; - struct triple *def, *arg1, *work, *last, *first; + struct type *ftype, *atype, *param, **next; + struct triple *def, *arg, *result, *work, *last, *first; struct hash_entry *ident; + struct file_state file; + int parameters; int name_len; + va_list args; + int i; /* Dummy file state to get debug handling right */ - struct file_state file; memset(&file, 0, sizeof(file)); file.basename = name; file.line = 1; file.prev = state->file; state->file = &file; - - atype = a1type; - rtype = result; - ftype = new_type(TYPE_FUNCTION, rtype, atype); + + /* Find the Parameter count */ + valid_op(state, op); + parameters = table_ops[op].rhs; + if (parameters < 0 ) { + internal_error(state, 0, "Invalid builtin parameter count"); + } + + /* Find the function type */ + ftype = new_type(TYPE_FUNCTION, rtype, 0); + next = &ftype->right; + va_start(args, rtype); + for(i = 0; i < parameters; i++) { + atype = va_arg(args, struct type *); + if (!*next) { + *next = atype; + } else { + *next = new_type(TYPE_PRODUCT, *next, atype); + next = &((*next)->right); + } + } + if (!*next) { + *next = &void_type; + } + va_end(args); + /* Generate the needed triples */ def = triple(state, OP_LIST, ftype, 0, 0); first = label(state); - def->left = first; - /* Now string them together into a list */ - arg1 = 0; - if ((atype->type & TYPE_MASK) != TYPE_VOID) { - arg1 = flatten(state, first, variable(state, a1type)); + RHS(def, 0) = first; + + /* Now string them together */ + param = ftype->right; + for(i = 0; i < parameters; i++) { + if ((param->type & TYPE_MASK) == TYPE_PRODUCT) { + atype = param->left; + } else { + atype = param; + } + arg = flatten(state, first, variable(state, atype)); + param = param->right; } - def->right = 0; + result = 0; if ((rtype->type & TYPE_MASK) != TYPE_VOID) { - def->right = flatten(state, first, variable(state, rtype)); + result = flatten(state, first, variable(state, rtype)); } - work = triple(state, op, rtype, read_expr(state, arg1), 0); - if (def->right) { - work = write_expr(state, def->right, work); + MISC(def, 0) = result; + work = new_triple(state, op, rtype, parameters); + for(i = 0, arg = first->next; i < parameters; i++, arg = arg->next) { + RHS(work, i) = read_expr(state, arg); + } + if (result && ((rtype->type & TYPE_MASK) == TYPE_STRUCT)) { + struct triple *val; + /* Populate the LHS with the target registers */ + work = flatten(state, first, work); + work->type = &void_type; + param = rtype->left; + if (rtype->elements != TRIPLE_LHS(work->sizes)) { + internal_error(state, 0, "Invalid result type"); + } + val = new_triple(state, OP_VAL_VEC, rtype, -1); + for(i = 0; i < rtype->elements; i++) { + struct triple *piece; + atype = param; + if ((param->type & TYPE_MASK) == TYPE_PRODUCT) { + atype = param->left; + } + if (!TYPE_ARITHMETIC(atype->type) && + !TYPE_PTR(atype->type)) { + internal_error(state, 0, "Invalid lhs type"); + } + piece = triple(state, OP_PIECE, atype, work, 0); + piece->u.cval = i; + LHS(work, i) = piece; + RHS(val, i) = piece; + } + work = val; + } + if (result) { + work = write_expr(state, result, work); } work = flatten(state, first, work); last = flatten(state, first, label(state)); name_len = strlen(name); ident = lookup(state, name, name_len); symbol(state, ident, &ident->sym_ident, def, ftype); - + state->file = file.prev; - #if 0 fprintf(stdout, "\n"); loc(stdout, state, 0); - fprintf(stdout, "\n__________ builtin_unary _________\n"); + fprintf(stdout, "\n__________ builtin_function _________\n"); print_triple(state, def); - fprintf(stdout, "__________ builtin_unary _________ done\n\n"); + fprintf(stdout, "__________ builtin_function _________ done\n\n"); #endif } -static void register_builtin_binary(struct compile_state *state, - const char *name, int op, - struct type *result, struct type *a1type, struct type *a2type) +static struct type *partial_struct(struct compile_state *state, + const char *field_name, struct type *type, struct type *rest) +{ + struct hash_entry *field_ident; + struct type *result; + int field_name_len; + + field_name_len = strlen(field_name); + field_ident = lookup(state, field_name, field_name_len); + + result = clone_type(0, type); + result->field_ident = field_ident; + + if (rest) { + result = new_type(TYPE_PRODUCT, result, rest); + } + return result; +} + +static struct type *register_builtin_type(struct compile_state *state, + const char *name, struct type *type) { - struct type *ftype, *rtype, *atype; - struct triple *def, *arg1, *arg2, *work, *last, *first; struct hash_entry *ident; int name_len; - /* Dummy file state to get debug handling right */ - struct file_state file; - memset(&file, 0, sizeof(file)); - file.basename = name; - file.line = 1; - file.prev = state->file; - state->file = &file; - - atype = new_type(TYPE_PRODUCT, a1type, a2type); - rtype = result; - ftype = new_type(TYPE_FUNCTION, rtype, atype); - /* Generate the needed triples */ - def = triple(state, OP_LIST, ftype, 0, 0); - first = label(state); - def->left = first; - /* String them togher */ - arg1 = flatten(state, first, variable(state, a1type)); - arg2 = flatten(state, first, variable(state, a2type)); - def->right = 0; - if ((rtype->type & TYPE_MASK) != TYPE_VOID) { - def->right = flatten(state, first, variable(state, rtype)); - } - work = triple(state, op, rtype, - read_expr(state, arg1), read_expr(state, arg2)); - if (def->right) { - work = write_expr(state, def->right, work); - } - work = flatten(state, first, work); - last = flatten(state, first, label(state)); + name_len = strlen(name); ident = lookup(state, name, name_len); - symbol(state, ident, &ident->sym_ident, def, ftype); - - state->file = file.prev; - -#if 0 - fprintf(stdout, "\n"); - loc(stdout, state, 0); - fprintf(stdout, "\n__________ builtin_binary _________\n"); - print_triple(state, def); - fprintf(stdout, "__________ builtin_binary _________ done\n\n"); -#endif + + if ((type->type & TYPE_MASK) == TYPE_PRODUCT) { + ulong_t elements = 0; + struct type *field; + type = new_type(TYPE_STRUCT, type, 0); + field = type->left; + while((field->type & TYPE_MASK) == TYPE_PRODUCT) { + elements++; + field = field->right; + } + elements++; + symbol(state, ident, &ident->sym_struct, 0, type); + type->type_ident = ident; + type->elements = elements; + } + symbol(state, ident, &ident->sym_ident, 0, type); + ident->tok = TOK_TYPE_NAME; + return type; } + static void register_builtins(struct compile_state *state) { - register_builtin_unary(state, "__builtin_inb", OP_INB, + struct type *msr_type; + + register_builtin_function(state, "__builtin_inb", OP_INB, &uchar_type, + &ushort_type); + register_builtin_function(state, "__builtin_inw", OP_INW, &ushort_type, + &ushort_type); + register_builtin_function(state, "__builtin_inl", OP_INL, &uint_type, + &ushort_type); + + register_builtin_function(state, "__builtin_outb", OP_OUTB, &void_type, &uchar_type, &ushort_type); - register_builtin_unary(state, "__builtin_inw", OP_INW, + register_builtin_function(state, "__builtin_outw", OP_OUTW, &void_type, &ushort_type, &ushort_type); - register_builtin_unary( state, "__builtin_inl", OP_INL, + register_builtin_function(state, "__builtin_outl", OP_OUTL, &void_type, &uint_type, &ushort_type); - - register_builtin_binary(state, "__builtin_outb", OP_OUTB, - &void_type, &uchar_type, &ushort_type); - register_builtin_binary(state, "__builtin_outw", OP_OUTW, - &void_type, &ushort_type, &ushort_type); - register_builtin_binary(state, "__builtin_outl", OP_OUTL, - &void_type, &uint_type, &ushort_type); - register_builtin_unary(state, "__builtin_bsf", OP_BSF, - &int_type, &int_type); - register_builtin_unary(state, "__builtin_bsr", OP_BSR, - &int_type, &int_type); + register_builtin_function(state, "__builtin_bsf", OP_BSF, &int_type, + &int_type); + register_builtin_function(state, "__builtin_bsr", OP_BSR, &int_type, + &int_type); + + msr_type = register_builtin_type(state, "__builtin_msr_t", + partial_struct(state, "lo", &ulong_type, + partial_struct(state, "hi", &ulong_type, 0))); + + register_builtin_function(state, "__builtin_rdmsr", OP_RDMSR, msr_type, + &ulong_type); + register_builtin_function(state, "__builtin_wrmsr", OP_WRMSR, &void_type, + &ulong_type, &ulong_type, &ulong_type); - register_builtin_unary(state, "__builtin_hlt", OP_HLT, - &void_type, &void_type); + register_builtin_function(state, "__builtin_hlt", OP_HLT, &void_type, + &void_type); } static struct type *declarator( @@ -5974,8 +6306,9 @@ static void statement(struct compile_state *state, struct triple *fist); static struct triple *call_expr( struct compile_state *state, struct triple *func) { - struct triple *def, **next; - struct type *type; + struct triple *def; + struct type *param, *type; + ulong_t pvals, index; if ((func->type->type & TYPE_MASK) != TYPE_FUNCTION) { error(state, 0, "Called object is not a function"); @@ -5986,35 +6319,26 @@ static struct triple *call_expr( eat(state, TOK_LPAREN); /* Find the return type without any specifiers */ type = clone_type(0, func->type->left); - def = triple(state, OP_CALL, type, func, 0); - next = &def->right; - if (peek(state) != TOK_RPAREN) { + def = new_triple(state, OP_CALL, func->type, -1); + def->type = type; + + pvals = TRIPLE_RHS(def->sizes); + MISC(def, 0) = func; + + param = func->type->right; + for(index = 0; index < pvals; index++) { struct triple *val; - struct type *param, *arg_type; + struct type *arg_type; val = read_expr(state, assignment_expr(state)); - param = func->type->right; arg_type = param; if ((param->type & TYPE_MASK) == TYPE_PRODUCT) { arg_type = param->left; } - else if ((param->type & TYPE_MASK) == TYPE_VOID) { - error(state, 0, "Too many arguments"); - } write_compatible(state, arg_type, val->type); - *next = val; - while(peek(state) == TOK_COMMA) { + RHS(def, index) = val; + if (index != (pvals - 1)) { eat(state, TOK_COMMA); - val = read_expr(state, assignment_expr(state)); - if (arg_type == param) { - error(state, 0, "Too many arguments"); - } - arg_type = param = param->right; - if ((param->type & TYPE_MASK) == TYPE_PRODUCT) { - arg_type = param->left; - } - write_compatible(state, arg_type, val->type); - *next = triple(state, OP_PRODUCT, &void_type, *next, val); - next = &((*next)->right); + param = param->right; } } eat(state, TOK_RPAREN); @@ -6223,15 +6547,24 @@ static struct triple *postfix_expr(struct compile_state *state) def = call_expr(state, def); break; case TOK_DOT: + { + struct hash_entry *field; eat(state, TOK_DOT); eat(state, TOK_IDENT); - FINISHME(); + field = state->token[0].ident; + def = deref_field(state, def, field); break; + } case TOK_ARROW: + { + struct hash_entry *field; eat(state, TOK_ARROW); eat(state, TOK_IDENT); - FINISHME(); + field = state->token[0].ident; + def = mk_deref_expr(state, read_expr(state, def)); + def = deref_field(state, def, field); break; + } case TOK_PLUSPLUS: eat(state, TOK_PLUSPLUS); def = mk_post_inc_expr(state, left); @@ -6797,7 +7130,7 @@ static void if_statement(struct compile_state *state, struct triple *first) eat(state, TOK_RPAREN); /* Generate the needed pieces */ middle = label(state); - jmp1 = triple(state, OP_BRANCH, &void_type, middle, test); + jmp1 = branch(state, middle, test); /* Thread the pieces together */ flatten(state, first, test); flatten(state, first, jmp1); @@ -6807,7 +7140,7 @@ static void if_statement(struct compile_state *state, struct triple *first) eat(state, TOK_ELSE); /* Generate the rest of the pieces */ end = label(state); - jmp2 = triple(state, OP_BRANCH, &void_type, end, 0); + jmp2 = branch(state, end, 0); /* Thread them together */ flatten(state, first, jmp2); flatten(state, first, middle); @@ -6847,11 +7180,11 @@ static void for_statement(struct compile_state *state, struct triple *first) label2 = label(state); label3 = label(state); if (test) { - jmp1 = triple(state, OP_BRANCH, &void_type, label3, 0); - jmp2 = triple(state, OP_BRANCH, &void_type, label1, test); + jmp1 = branch(state, label3, 0); + jmp2 = branch(state, label1, test); } else { - jmp2 = triple(state, OP_BRANCH, &void_type, label1, 0); + jmp2 = branch(state, label1, 0); } end = label(state); /* Remember where break and continue go */ @@ -6888,8 +7221,8 @@ static void while_statement(struct compile_state *state, struct triple *first) /* Generate the needed pieces */ label1 = label(state); label2 = label(state); - jmp1 = triple(state, OP_BRANCH, &void_type, label2, 0); - jmp2 = triple(state, OP_BRANCH, &void_type, label1, test); + jmp1 = branch(state, label2, 0); + jmp2 = branch(state, label1, test); end = label(state); /* Remember where break and continue go */ start_scope(state); @@ -6940,8 +7273,7 @@ static void do_statement(struct compile_state *state, struct triple *first) test = ltrue_expr(state, test); flatten(state, first, label2); flatten(state, first, test); - flatten(state, first, - triple(state, OP_BRANCH, &void_type, label1, test)); + flatten(state, first, branch(state, label1, test)); flatten(state, first, end); } @@ -6965,13 +7297,13 @@ static void return_statement(struct compile_state *state, struct triple *first) (state->scope_depth == GLOBAL_SCOPE_DEPTH +2)); /* Find the return variable */ - var = state->main_function->right; + var = MISC(state->main_function, 0); /* Find the return destination */ - dest = state->main_function->left->prev; + dest = RHS(state->main_function, 0)->prev; mv = jmp = 0; /* If needed generate a jump instruction */ if (!last) { - jmp = triple(state, OP_BRANCH, &void_type, dest, 0); + jmp = branch(state, dest, 0); } /* If needed generate an assignment instruction */ if (val) { @@ -6996,7 +7328,7 @@ static void break_statement(struct compile_state *state, struct triple *first) error(state, 0, "break statement not within loop or switch"); } dest = state->i_break->sym_ident->def; - flatten(state, first, triple(state, OP_BRANCH, &void_type, dest, 0)); + flatten(state, first, branch(state, dest, 0)); } static void continue_statement(struct compile_state *state, struct triple *first) @@ -7008,7 +7340,7 @@ static void continue_statement(struct compile_state *state, struct triple *first error(state, 0, "continue statement outside of a loop"); } dest = state->i_continue->sym_ident->def; - flatten(state, first, triple(state, OP_BRANCH, &void_type, dest, 0)); + flatten(state, first, branch(state, dest, 0)); } static void goto_statement(struct compile_state *state, struct triple *first) @@ -7178,7 +7510,7 @@ static struct type *param_decl(struct compile_state *state) ident = 0; type = decl_specifiers(state); type = declarator(state, type, &ident, 0); - type->ident = ident; + type->field_ident = ident; end_scope(state); return type; } @@ -7315,7 +7647,6 @@ static struct type *typedef_name( (type->type & (STOR_MASK | QUAL_MASK))) { type = clone_type(specifiers, type); } - FINISHME(); return type; } @@ -7371,49 +7702,76 @@ static struct type *struct_declarator( static struct type *struct_or_union_specifier( struct compile_state *state, unsigned int specifiers) { - struct type *type; + struct type *struct_type; + struct hash_entry *ident; + unsigned int type_join; int tok; - FINISHME(); - type = 0; + struct_type = 0; + ident = 0; switch(peek(state)) { case TOK_STRUCT: eat(state, TOK_STRUCT); + type_join = TYPE_PRODUCT; break; case TOK_UNION: eat(state, TOK_UNION); + type_join = TYPE_OVERLAP; + error(state, 0, "unions not yet supported\n"); break; default: eat(state, TOK_STRUCT); + type_join = TYPE_PRODUCT; break; } tok = peek(state); - if (tok == TOK_IDENT) { - eat(state, TOK_IDENT); - FINISHME(); + if ((tok == TOK_IDENT) || (tok == TOK_TYPE_NAME)) { + eat(state, tok); + ident = state->token[0].ident; } - if ((tok != TOK_IDENT) || (peek(state) == TOK_LBRACE)) { + if (!ident || (peek(state) == TOK_LBRACE)) { + ulong_t elements; + elements = 0; eat(state, TOK_LBRACE); do { struct type *base_type; + struct type **next; int done; - FINISHME(); base_type = specifier_qualifier_list(state); + next = &struct_type; do { struct type *type; - struct hash_entry *ident; + struct hash_entry *fident; done = 1; - type = declarator(state, base_type, &ident, 1); + type = declarator(state, base_type, &fident, 1); + elements++; if (peek(state) == TOK_COMMA) { done = 0; eat(state, TOK_COMMA); } + type = clone_type(0, type); + type->field_ident = fident; + if (*next) { + *next = new_type(type_join, *next, type); + next = &((*next)->right); + } else { + *next = type; + } } while(!done); eat(state, TOK_SEMI); } while(peek(state) != TOK_RBRACE); eat(state, TOK_RBRACE); + struct_type = new_type(TYPE_STRUCT, struct_type, 0); + struct_type->type_ident = ident; + struct_type->elements = elements; + symbol(state, ident, &ident->sym_struct, 0, struct_type); } - FINISHME(); - return type; + if (ident && ident->sym_struct) { + struct_type = ident->sym_struct->type; + } + else if (ident && !ident->sym_struct) { + error(state, 0, "struct %s undeclared", ident->name); + } + return struct_type; } static unsigned int storage_class_specifier_opt(struct compile_state *state) @@ -7868,20 +8226,20 @@ static struct triple *function_definition( /* Verify the function type */ if (((type->right->type & TYPE_MASK) != TYPE_VOID) && ((type->right->type & TYPE_MASK) != TYPE_PRODUCT) && - (type->right->ident == 0)) { + (type->right->field_ident == 0)) { error(state, 0, "Invalid function parameters"); } param = type->right; i = 0; while((param->type & TYPE_MASK) == TYPE_PRODUCT) { i++; - if (!param->left->ident) { + if (!param->left->field_ident) { error(state, 0, "No identifier for parameter %d\n", i); } param = param->right; } i++; - if (((param->type & TYPE_MASK) != TYPE_VOID) && !param->ident) { + if (((param->type & TYPE_MASK) != TYPE_VOID) && !param->field_ident) { error(state, 0, "No identifier for paramter %d\n", i); } @@ -7893,7 +8251,7 @@ static struct triple *function_definition( /* Put a label at the very start of a function */ first = label(state); - def->left = first; + RHS(def, 0) = first; /* Put a label at the very end of a function */ end = label(state); @@ -7904,7 +8262,7 @@ static struct triple *function_definition( */ param = type->right; while((param->type & TYPE_MASK) == TYPE_PRODUCT) { - ident = param->left->ident; + ident = param->left->field_ident; tmp = variable(state, param->left); symbol(state, ident, &ident->sym_ident, tmp, tmp->type); flatten(state, end, tmp); @@ -7912,19 +8270,19 @@ static struct triple *function_definition( } if ((param->type & TYPE_MASK) != TYPE_VOID) { /* And don't forget the last parameter */ - ident = param->ident; + ident = param->field_ident; tmp = variable(state, param); symbol(state, ident, &ident->sym_ident, tmp, tmp->type); flatten(state, end, tmp); } /* Add a variable for the return value */ - def->right = 0; + MISC(def, 0) = 0; if ((type->left->type & TYPE_MASK) != TYPE_VOID) { /* Remove all type qualifiers from the return type */ tmp = variable(state, clone_type(0, type->left)); flatten(state, end, tmp); /* Remember where the return value is */ - def->right = tmp; + MISC(def, 0) = tmp; } /* Remember which function I am compiling. @@ -7968,8 +8326,12 @@ static struct triple *do_decl(struct compile_state *state, type->type |= STOR_STATIC; break; case STOR_TYPEDEF: -#warning "FIXME support typedefs" - error(state, 0, "typedefs not currently supported"); + if (!ident) { + error(state, 0, "typedef without name"); + } + symbol(state, ident, &ident->sym_ident, 0, type); + ident->tok = TOK_TYPE_NAME; + return 0; break; default: internal_error(state, 0, "Undefined storage class"); @@ -8163,7 +8525,7 @@ static int do_walk_triple(struct compile_state *state, if ((result == 0) && (ptr->op == OP_LIST)) { struct triple *list; list = ptr; - ptr = list->left; + ptr = RHS(list, 0); do { result = do_walk_triple(state, ptr, depth + 1, cb); if (ptr->next->prev != ptr) { @@ -8171,7 +8533,7 @@ static int do_walk_triple(struct compile_state *state, } ptr = ptr->next; - } while((result == 0) && (ptr != list->left)); + } while((result == 0) && (ptr != RHS(list, 0))); } return result; } @@ -8202,28 +8564,12 @@ static int do_print_triple(struct compile_state *state, struct triple *ins, int return 0; #endif } - else if ((op == OP_LABEL) && (ins->use)) { + if ((op == OP_LABEL) && (ins->use)) { printf("\n%p:\n", ins); } - else if (op == OP_INTCONST) { - do_print_prefix(depth); - printf("(%p) %-7s %08lx @ %s:%d.%d\n", - ins, tops(ins->op), ins->u.cval, - ins->filename, ins->line, ins->col); - return 0; - } - else if (op == OP_SDECL) { - do_print_prefix(depth); - printf("(%p) %-7s %-10p @ %s:%d.%d\n", - ins, tops(ins->op), ins->left, - ins->filename, ins->line, ins->col); - do_print_triple(state, ins->left, depth + 1); - } do_print_prefix(depth); - printf("%s(%p) %-7s %-10p %-10p @ %s:%d.%d\n", - (op == OP_LIST)? "list: ": "", - ins, tops(ins->op), ins->left, ins->right, - ins->filename, ins->line, ins->col); + display_triple(stdout, ins); + if ((ins->op == OP_BRANCH) && ins->use) { internal_error(state, ins, "branch used?"); } @@ -8235,7 +8581,7 @@ static int do_print_triple(struct compile_state *state, struct triple *ins, int } } #endif - if (triple_is_branch(ins)) { + if (triple_is_branch(state, ins)) { printf("\n"); } return 0; @@ -8323,8 +8669,8 @@ static struct block *basic_block(struct compile_state *state, break; } ptr = ptr->next; - } while (ptr != state->main_function->left); - if (ptr == state->main_function->left) + } while (ptr != RHS(state->main_function, 0)); + if (ptr == RHS(state->main_function, 0)) return block; op = ptr->op; if (op == OP_LABEL) { @@ -8335,10 +8681,10 @@ static struct block *basic_block(struct compile_state *state, else if (op == OP_BRANCH) { block->left = 0; /* Trace the branch target */ - block->right = basic_block(state, ptr->left); + block->right = basic_block(state, TARG(ptr, 0)); use_block(block->right, block); /* If there is a test trace the branch as well */ - if (ptr->right) { + if (TRIPLE_RHS(ptr->sizes)) { block->left = basic_block(state, ptr->next); use_block(block->left, block); } @@ -8357,7 +8703,7 @@ static void walk_blocks(struct compile_state *state, struct triple *ptr, *first; struct block *last_block; last_block = 0; - first = state->main_function->left; + first = RHS(state->main_function, 0); ptr = first; do { struct block *block; @@ -8407,38 +8753,14 @@ static void print_block( } } } - if (op == OP_INTCONST) { - printf("(%p) %3d %-7s %08lx @ %s:%d.%d\n", - ptr, ID_REG(ptr->id), tops(ptr->op), - ptr->u.cval, - ptr->filename, ptr->line, ptr->col); - } - else if (op == OP_PHI) { - struct triple **slot; - struct block *block; - int edge; - block = ptr->u.block; - slot = (struct triple **)(ptr->left); - printf("(%p) %3d %-7s", - ptr, ID_REG(ptr->id), tops(ptr->op)); - for(edge = 0; edge < block->users; edge++) { - printf(" %-10p", slot[edge]); - } - printf(" @%s:%d.%d\n", - ptr->filename, ptr->line, ptr->col); - } - else { - printf("(%p) %3d %-7s %-10p %-10p @ %s:%d.%d\n", - ptr, ID_REG(ptr->id), tops(ptr->op), - ptr->left, ptr->right, - ptr->filename, ptr->line, ptr->col); - } + display_triple(stdout, ptr); + /* Sanity checks... */ - valid_op(state, ptr); + valid_ins(state, ptr); for(user = ptr->use; user; user = user->next) { struct triple *use; use = user->member; - valid_op(state, use); + valid_ins(state, use); if (!IS_CONST_OP(user->member->op) && !user->member->u.block) { internal_error(state, user->member, @@ -8465,7 +8787,7 @@ static void prune_nonblock_triples(struct compile_state *state) struct block *block; struct triple *first, *ins; /* Delete the triples not in a basic block */ - first = state->main_function->left; + first = RHS(state->main_function, 0); block = 0; ins = first; do { @@ -8483,11 +8805,11 @@ static void setup_basic_blocks(struct compile_state *state) { /* Find the basic blocks */ state->last_vertex = 0; - state->first_block = basic_block(state, state->main_function->left); + state->first_block = basic_block(state, RHS(state->main_function,0)); /* Delete the triples not in a basic block */ prune_nonblock_triples(state); /* Find the last basic block */ - state->last_block = state->main_function->left->prev->u.block; + state->last_block = RHS(state->main_function, 0)->prev->u.block; if (!state->last_block) { internal_error(state, 0, "end not used?"); } @@ -8577,7 +8899,7 @@ static void free_basic_blocks(struct compile_state *state) free_basic_block(state, state->first_block); state->last_vertex = 0; state->first_block = state->last_block = 0; - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { if (!is_const(ins)) { @@ -9139,7 +9461,7 @@ static void insert_phi_operations(struct compile_state *state) work = xcmalloc(size, "work"); iter = 0; - first = state->main_function->left; + first = RHS(state->main_function, 0); for(var = first->next; var != first ; var = var->next) { struct block *block; struct triple_set *user; @@ -9180,13 +9502,13 @@ static void insert_phi_operations(struct compile_state *state) /* Count how many edges flow into this block */ in_edges = front->users; /* Insert a phi function for this variable */ - phi = xcmalloc(in_edges * sizeof(*phi),"phi"); - phi = triple(state, OP_PHI, var->type, - phi, var); - phi->filename = front->first->filename; - phi->line = front->first->line; - phi->col = front->first->col; + phi = alloc_triple( + state, OP_PHI, var->type, in_edges, + front->first->filename, + front->first->line, + front->first->col); phi->u.block = front; + MISC(phi, 0) = var; use_triple(var, phi); /* Insert the phi functions immediately after the label */ insert_triple(state, front->first->next, phi); @@ -9235,14 +9557,16 @@ static void fixup_block_phi_variables( for(ptr = block->first; ; ptr = ptr->next) { if (ptr->op == OP_PHI) { struct triple *var, *val, **slot; - var = ptr->right; + var = MISC(ptr, 0); /* Find the current value of the variable */ val = var->use->member; if ((val->op == OP_WRITE) || (val->op == OP_READ)) { internal_error(state, val, "bad value in phi"); } - slot = (struct triple **)(ptr->left); - slot += edge; + if (edge >= TRIPLE_RHS(ptr->sizes)) { + internal_error(state, ptr, "edges > phi rhs"); + } + slot = &RHS(ptr, edge); if ((*slot != 0) && (*slot != val)) { internal_error(state, ptr, "phi already bound on this edge"); } @@ -9274,7 +9598,7 @@ static void rename_block_variables( /* RHS(A) */ if (ptr->op == OP_READ) { struct triple *var, *val; - var = ptr->left; + var = RHS(ptr, 0); unuse_triple(var, ptr); if (!var->use) { error(state, ptr, "variable used without being set"); @@ -9291,8 +9615,8 @@ static void rename_block_variables( /* LHS(A) */ if (ptr->op == OP_WRITE) { struct triple *var, *val; - var = ptr->left; - val = ptr->right; + var = LHS(ptr, 0); + val = RHS(ptr, 0); if ((val->op == OP_WRITE) || (val->op == OP_READ)) { internal_error(state, val, "bad value in write"); } @@ -9303,7 +9627,7 @@ static void rename_block_variables( } if (ptr->op == OP_PHI) { struct triple *var; - var = ptr->right; + var = MISC(ptr, 0); /* Push OP_PHI onto a stack of variable uses */ push_triple(var, ptr); } @@ -9328,15 +9652,15 @@ static void rename_block_variables( } if (ptr->op == OP_WRITE) { struct triple *var; - var = ptr->left; + var = LHS(ptr, 0); /* Pop OP_WRITE ptr->right from the stack of variable uses */ - pop_triple(var, ptr->right); + pop_triple(var, RHS(ptr, 0)); release_triple(state, ptr); continue; } if (ptr->op == OP_PHI) { struct triple *var; - var = ptr->right; + var = MISC(ptr, 0); /* Pop OP_WRITE ptr->right from the stack of variable uses */ pop_triple(var, ptr); } @@ -9367,11 +9691,11 @@ static void prune_block_variables(struct compile_state *state, if (use->op != OP_PHI) { internal_error(state, use, "decl still used"); } - if (use->right != ptr) { + if (MISC(use, 0) != ptr) { internal_error(state, use, "bad phi use of decl"); } unuse_triple(ptr, use); - use->right = 0; + MISC(use, 0) = 0; } release_triple(state, ptr); continue; @@ -9405,7 +9729,7 @@ static void transform_from_ssa_form(struct compile_state *state) struct triple *phi, *next; /* Walk all of the operations to find the phi functions */ - first = state->main_function->left; + first = RHS(state->main_function, 0); for(phi = first->next; phi != first ; phi = next) { struct block_set *set; struct block *block; @@ -9417,7 +9741,7 @@ static void transform_from_ssa_form(struct compile_state *state) continue; } block = phi->u.block; - slot = (struct triple **)(phi->left); + slot = &RHS(phi, 0); /* A variable to replace the phi function */ var = post_triple(state, phi, OP_ADECL, phi->type, 0,0); @@ -9461,7 +9785,7 @@ static void insert_copies_to_phi(struct compile_state *state) struct triple *phi; /* Walk all of the operations to find the phi functions */ - first = state->main_function->left; + first = RHS(state->main_function, 0); for(phi = first->next; phi != first ; phi = phi->next) { struct block_set *set; struct block *block; @@ -9475,7 +9799,7 @@ static void insert_copies_to_phi(struct compile_state *state) ID_REG_CLASSES(phi->id)); } block = phi->u.block; - slot = (struct triple **)(phi->left); + slot = &RHS(phi, 0); /* Walk all of the incoming edges/blocks and insert moves. */ for(edge = 0, set = block->use; set; set = set->next, edge++) { @@ -9516,7 +9840,7 @@ static void insert_copies_to_phi(struct compile_state *state) } } out: - if (triple_is_branch(ptr)) { + if (triple_is_branch(state, ptr)) { internal_error(state, ptr, "Could not insert write to phi"); } @@ -9643,7 +9967,7 @@ static int phi_in(struct compile_state *state, struct reg_block *blocks, if (ptr->op != OP_PHI) { continue; } - slot = (struct triple **)(ptr->left); + slot = &RHS(ptr, 0); expr = slot[edge]; out_change = out_triple(rb, expr); if (!out_change) { @@ -9733,6 +10057,9 @@ static int use_in(struct compile_state *state, struct reg_block *rb) struct triple *rhs, *test; int tdone; rhs = *expr; + if (!rhs) { + continue; + } /* See if rhs is defined in this block */ for(tdone = 0, test = ptr; !tdone; test = test->prev) { tdone = (test == block->first); @@ -9742,7 +10069,7 @@ static int use_in(struct compile_state *state, struct reg_block *rb) } } /* If the triple is not a definition skip it. */ - if (!triple_is_def(ptr)) { + if (!triple_is_def(state, ptr)) { continue; } /* If I still have a valid rhs add it to in */ @@ -9863,7 +10190,7 @@ static void walk_variable_lifetimes(struct compile_state *state, expr = triple_rhs(state, ptr, 0); for(;expr; expr = triple_rhs(state, ptr, expr)) { /* If the triple is not a definition skip it. */ - if (!triple_is_def(*expr)) { + if (!*expr || !triple_is_def(state, *expr)) { continue; } do_triple_set(&live, *expr, 0); @@ -9882,7 +10209,7 @@ static int count_triples(struct compile_state *state) { struct triple *first, *ins; int triples = 0; - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { triples++; @@ -9943,7 +10270,7 @@ static void eliminate_inefectual_code(struct compile_state *state) work_list = 0; work_list_tail = &work_list; - first = state->main_function->left; + first = RHS(state->main_function, 0); /* Count how many triples I have */ triples = count_triples(state); @@ -9965,7 +10292,7 @@ static void eliminate_inefectual_code(struct compile_state *state) ins->id = i; /* See if it is an operation we always keep */ #warning "FIXME handle the case of killing a branch instruction" - if (!triple_is_pure(state, ins) || triple_is_branch(ins)) { + if (!triple_is_pure(state, ins) || triple_is_branch(state, ins)) { awaken(state, dtriple, &ins, &work_list_tail); } i++; @@ -10280,7 +10607,7 @@ static void different_colored( expr = triple_rhs(state, ins, 0); for(;expr; expr = triple_rhs(state, ins, expr)) { struct live_range *lr2; - if ((*expr == parent) || (*expr == ins)) { + if (!*expr || (*expr == parent) || (*expr == ins)) { continue; } lr2 = &rstate->lr[(*expr)->id]; @@ -10297,7 +10624,7 @@ static void initialize_live_ranges( size_t size; int i; - first = state->main_function->left; + first = RHS(state->main_function, 0); /* First count how many live ranges I will need. */ rstate->ranges = count_triples(state); @@ -10319,7 +10646,7 @@ static void initialize_live_ranges( } /* If the triple is a variable definition give it a live range. */ - if (triple_is_def(ins)) { + if (triple_is_def(state, ins)) { i++; ins->id = i; rstate->lr[i].def = ins; @@ -10353,7 +10680,7 @@ static void initialize_live_ranges( expr = triple_rhs(state, ins, 0); for(;expr; expr = triple_rhs(state, ins, expr)) { struct live_range *lr2; - if (ins == *expr) { + if (!*expr || (ins == *expr)) { continue; } lr2 = &rstate->lr[(*expr)->id]; @@ -10419,19 +10746,7 @@ static struct triple *print_interference_ins( struct live_range *lr; lr = &rstate->lr[ins->id]; - if ((ins->op == OP_LABEL) && (ins->use)) { - printf("\n%p:\n", ins); - } - else if (ins->op == OP_INTCONST) { - printf("(%p) %-7s %08lx @ %s:%d.%d\n", - ins, tops(ins->op), ins->u.cval, - ins->filename, ins->line, ins->col); - } - else { - printf("(%p) %-7s %-10p %-10p @ %s:%d.%d\n", - ins, tops(ins->op), ins->left, ins->right, - ins->filename, ins->line, ins->col); - } + display_triple(stdout, ins); if (live) { struct triple_reg_set *entry; printf(" live:"); @@ -10448,7 +10763,7 @@ static struct triple *print_interference_ins( } printf("\n"); } - if (triple_is_branch(ins)) { + if (triple_is_branch(state, ins)) { printf("\n"); } return ins; @@ -10549,6 +10864,9 @@ static void select_free_color(struct compile_state *state, expr = triple_rhs(state, phi->def, 0); for(; expr; expr = triple_rhs(state, phi->def, expr)) { struct live_range *lr; + if (!*expr) { + continue; + } lr = &rstate->lr[(*expr)->id]; if ((lr->color == REG_UNSET) || ((lr->classes & range->classes) == 0) || @@ -10567,6 +10885,9 @@ static void select_free_color(struct compile_state *state, expr = triple_rhs(state, range->def, 0); for(; expr; expr = triple_rhs(state, range->def, expr)) { struct live_range *lr; + if (!*expr) { + continue; + } lr = &rstate->lr[(*expr)->id]; if ((lr->color == -1) || ((lr->classes & range->classes) == 0) || @@ -10700,7 +11021,7 @@ static void color_triples(struct compile_state *state, struct reg_state *rstate) { struct live_range *lr; struct triple *first, *triple; - first = state->main_function->left; + first = RHS(state->main_function, 0); triple = first; do { if ((triple->id < 0) || (triple->id > rstate->ranges)) { @@ -10757,7 +11078,7 @@ static void print_interference_block( if (ptr->op != OP_PHI) { continue; } - slot = (struct triple **)(ptr->left); + slot = &RHS(ptr, 0); printf(" %-10p", slot[edge]); } printf("\n"); @@ -10769,6 +11090,7 @@ static void print_interference_block( for(done = 0, ptr = block->first; !done; ptr = ptr->next) { struct triple_set *user; struct live_range *lr; + unsigned id; int op; op = ptr->op; done = (ptr == block->last); @@ -10793,30 +11115,11 @@ static void print_interference_block( } } - if (op == OP_INTCONST) { - printf("(%p) %3d %-7s %08lx @ %s:%d.%d\n", - ptr, lr->color, tops(ptr->op), ptr->u.cval, - ptr->filename, ptr->line, ptr->col); - } - else if (op == OP_PHI) { - struct triple **slot; - struct block *block; - int edge; - block = ptr->u.block; - slot = (struct triple **)(ptr->left); - printf("(%p) %3d %-7s", - ptr, lr->color, tops(ptr->op)); - for(edge = 0; edge < block->users; edge++) { - printf(" %-10p", slot[edge]); - } - printf(" @%s:%d.%d\n", - ptr->filename, ptr->line, ptr->col); - } - else { - printf("(%p) %3d %-7s %-10p %-10p @ %s:%d.%d\n", - ptr, lr->color, tops(ptr->op), ptr->left, ptr->right, - ptr->filename, ptr->line, ptr->col); - } + id = ptr->id; + ptr->id = MK_REG_ID(lr->color, 0); + display_triple(stdout, ptr); + ptr->id = id; + if (lr->edges > 0) { struct live_range_edge *edge; printf(" "); @@ -10826,7 +11129,7 @@ static void print_interference_block( printf("\n"); } /* Do a bunch of sanity checks */ - valid_op(state, ptr); + valid_ins(state, ptr); if ((ptr->id < 0) || (ptr->id > rstate->ranges)) { internal_error(state, ptr, "Invalid triple id: %d", ptr->id); @@ -10835,7 +11138,7 @@ static void print_interference_block( struct triple *use; struct live_range *ulr; use = user->member; - valid_op(state, use); + valid_ins(state, use); if ((use->id < 0) || (use->id > rstate->ranges)) { internal_error(state, use, "Invalid triple id: %d", use->id); @@ -10951,7 +11254,9 @@ static void allocate_registers(struct compile_state *state) rstate.low_tail = &rstate.low; rstate.high_tail = &rstate.high; rstate.high = merge_sort_lr(&rstate.lr[1], &rstate.lr[rstate.ranges]); - rstate.high->group_prev = &rstate.high; + if (rstate.high) { + rstate.high->group_prev = &rstate.high; + } for(point = &rstate.high; *point; point = &(*point)->group_next) ; rstate.high_tail = point; @@ -11022,7 +11327,6 @@ struct lattice_node { * lattice const is_const(val) * lattice low val == 0 */ - struct triple scratch; }; struct ssa_edge { struct lattice_node *src; @@ -11048,6 +11352,7 @@ struct flow_block { }; struct scc_state { + int ins_count; struct lattice_node *lattice; struct ssa_edge *ssa_edges; struct flow_block *flow_blocks; @@ -11136,7 +11441,7 @@ static void initialize_scc_state( memset(scc, 0, sizeof(*scc)); /* Inialize pass zero find out how much memory we need */ - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; ins_count = ssa_edge_count = 0; do { @@ -11151,6 +11456,7 @@ static void initialize_scc_state( fprintf(stderr, "ins_count: %d ssa_edge_count: %d vertex_count: %d\n", ins_count, ssa_edge_count, state->last_vertex); #endif + scc->ins_count = ins_count; scc->lattice = xcmalloc(sizeof(*scc->lattice)*(ins_count + 1), "lattice"); scc->ssa_edges = @@ -11297,9 +11603,17 @@ static void initialize_scc_state( static void free_scc_state( struct compile_state *state, struct scc_state *scc) { + int i; + for(i = 0; i < scc->ins_count; i++) { + if (scc->lattice[i].val && + (scc->lattice[i].val != scc->lattice[i].def)) { + xfree(scc->lattice[i].val); + } + } xfree(scc->flow_blocks); xfree(scc->ssa_edges); xfree(scc->lattice); + } static struct lattice_node *triple_to_lattice( @@ -11323,7 +11637,7 @@ static void scc_visit_phi(struct compile_state *state, struct scc_state *scc, } /* default to lattice high */ lnode->val = lnode->def; - slot = (struct triple **)lnode->def->left; + slot = &RHS(lnode->def, 0); index = 0; for(fedge = lnode->fblock->in; fedge; index++, fedge = fedge->in_next) { if (!fedge->executable) { @@ -11365,93 +11679,91 @@ static int compute_lnode_val(struct compile_state *state, struct scc_state *scc, struct lattice_node *lnode) { int changed; - struct triple old_buf, *old; + struct triple *old, *scratch; struct triple **dexpr, **vexpr; + int count, i; + if (lnode->def->op != OP_STORE) { + check_lhs(state, lnode->def); + } + /* Store the original value */ if (lnode->val) { - old = &old_buf; - memcpy(old, lnode->val, sizeof(*old)); + old = dup_triple(state, lnode->val); + if (lnode->val != lnode->def) { + xfree(lnode->val); + } + lnode->val = 0; + } else { old = 0; } /* Reinitialize the value */ - memset(&lnode->scratch, 0, sizeof(lnode->scratch)); - lnode->val = &lnode->scratch; - lnode->val->next = &lnode->scratch; - lnode->val->prev = &lnode->scratch; - lnode->val->use = 0; - lnode->val->type = lnode->def->type; - lnode->val->op = lnode->def->op; - lnode->val->left = 0; - lnode->val->right = 0; - lnode->val->filename = lnode->def->filename; - lnode->val->line = lnode->def->line; - lnode->val->col = lnode->def->col; - if (lnode->def->op != OP_STORE) { - check_lhs(state, lnode->def); - } - dexpr = triple_rhs(state, lnode->def, 0); - vexpr = triple_rhs(state, lnode->val, 0); - while(dexpr && vexpr) { + lnode->val = scratch = dup_triple(state, lnode->def); + scratch->next = scratch; + scratch->prev = scratch; + scratch->use = 0; + + count = TRIPLE_SIZE(scratch->sizes); + for(i = 0; i < count; i++) { struct lattice_node *tmp; - tmp = triple_to_lattice(state, scc, *dexpr); - *vexpr = (tmp->val)? tmp->val : tmp->def; - dexpr = triple_rhs(state, lnode->def, dexpr); - vexpr = triple_rhs(state, lnode->val, vexpr); - } - if (is_const(lnode->val)) { - memcpy(&lnode->val->u, &lnode->def->u, sizeof(lnode->def->u)); - } - else if (lnode->val->op == OP_BRANCH) { - lnode->val->left = lnode->def->left; - lnode->val->next = lnode->def->next; + dexpr = &lnode->def->param[i]; + vexpr = &scratch->param[i]; + *vexpr = 0; + if (*dexpr) { + tmp = triple_to_lattice(state, scc, *dexpr); + *vexpr = (tmp->val)? tmp->val : tmp->def; + } } - else if (lnode->val->op == OP_SDECL) { - lnode->val->left = lnode->def->left; + if (scratch->op == OP_BRANCH) { + scratch->next = lnode->def->next; } /* Recompute the value */ #warning "FIXME see if simplify does anything bad" /* So far it looks like only the strength reduction * optimization are things I need to worry about. */ - simplify(state, lnode->val); + simplify(state, scratch); /* Cleanup my value */ - if (lnode->scratch.use) { + if (scratch->use) { internal_error(state, lnode->def, "scratch used?"); } - if ((lnode->scratch.prev != &lnode->scratch) || - ((lnode->scratch.next != &lnode->scratch) && + if ((scratch->prev != scratch) || + ((scratch->next != scratch) && ((lnode->def->op != OP_BRANCH) || - (lnode->scratch.next != lnode->def->next)))) { + (scratch->next != lnode->def->next)))) { internal_error(state, lnode->def, "scratch in list?"); } /* undo any uses... */ - vexpr = triple_rhs(state, lnode->val, 0); - for(;vexpr;vexpr = triple_rhs(state, lnode->val, vexpr)) { - unuse_triple(*vexpr, lnode->val); - } - if (!is_const(lnode->val)) { - dexpr = triple_rhs(state, lnode->def, 0); - for(;dexpr;dexpr = triple_rhs(state, lnode->def, dexpr)) { - struct lattice_node *tmp; - tmp = triple_to_lattice(state, scc, *dexpr); - if (!tmp->val) { - lnode->val = 0; + count = TRIPLE_SIZE(scratch->sizes); + for(i = 0; i < count; i++) { + vexpr = &scratch->param[i]; + if (*vexpr) { + unuse_triple(*vexpr, scratch); + } + } + if (!is_const(scratch)) { + for(i = 0; i < count; i++) { + dexpr = &lnode->def->param[i]; + if (*dexpr) { + struct lattice_node *tmp; + tmp = triple_to_lattice(state, scc, *dexpr); + if (!tmp->val) { + lnode->val = 0; + } } } } if (lnode->val && (lnode->val->op == lnode->def->op) && - (lnode->val->left == lnode->def->left) && - (lnode->val->right == lnode->def->right) && - (((memcmp(&lnode->val->u, &lnode->def->u, sizeof(lnode->def->u)) == 0) && - is_const(lnode->val)) || !is_const(lnode->val))) { + (memcmp(lnode->val->param, lnode->def->param, + count * sizeof(lnode->val->param[0])) == 0) && + (memcmp(&lnode->val->u, &lnode->def->u, sizeof(lnode->def->u)) == 0)) { lnode->val = lnode->def; } /* Find the cases that are always lattice lo */ if (lnode->val && - triple_is_def(lnode->val) && + triple_is_def(state, lnode->val) && !triple_is_pure(state, lnode->val)) { lnode->val = 0; } @@ -11473,14 +11785,20 @@ static int compute_lnode_val(struct compile_state *state, struct scc_state *scc, if (changed && lnode->val && old && (lnode->val->op == old->op) && - (lnode->val->left == old->left) && - (lnode->val->right == old->right) && + (memcmp(lnode->val->param, old->param, + count * sizeof(lnode->val->param[0])) == 0) && (memcmp(&lnode->val->u, &old->u, sizeof(old->u)) == 0)) { changed = 0; } + if (old) { + xfree(old); + } + if (lnode->val != scratch) { + xfree(scratch); + } return changed; - } + static void scc_visit_branch(struct compile_state *state, struct scc_state *scc, struct lattice_node *lnode) { @@ -11495,9 +11813,9 @@ static void scc_visit_branch(struct compile_state *state, struct scc_state *scc, fprintf(stderr, " %d", fedge->dst->block->vertex); } fprintf(stderr, " )"); - if (lnode->def->right) { + if (TRIPLE_RHS(lnode->def->sizes) > 0) { fprintf(stderr, " <- %d", - lnode->def->right->id); + RHS(lnode->def)->id); } fprintf(stderr, "\n"); } @@ -11506,10 +11824,10 @@ static void scc_visit_branch(struct compile_state *state, struct scc_state *scc, internal_error(state, lnode->def, "not branch"); } /* This only applies to conditional branches */ - if (lnode->def->right == 0) { + if (TRIPLE_RHS(lnode->def->sizes) == 0) { return; } - cond = triple_to_lattice(state, scc, lnode->def->right); + cond = triple_to_lattice(state, scc, RHS(lnode->def,0)); if (cond->val && !is_const(cond->val)) { #warning "FIXME do I need to do something here?" warning(state, cond->def, "condition not constant?"); @@ -11541,7 +11859,9 @@ static void scc_visit_expr(struct compile_state *state, struct scc_state *scc, lnode->def->id, tops(lnode->def->op)); expr = triple_rhs(state, lnode->def, 0); for(;expr;expr = triple_rhs(state, lnode->def, expr)) { - fprintf(stderr, " %d", (*expr)->id); + if (*expr) { + fprintf(stderr, " %d", (*expr)->id); + } } fprintf(stderr, " ) -> %s\n", (!lnode->val)? "lo": is_const(lnode->val)? "const": "hi"); @@ -11563,7 +11883,7 @@ static void scc_writeback_values( struct compile_state *state, struct scc_state *scc) { struct triple *first, *ins; - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { struct lattice_node *lnode; @@ -11582,7 +11902,7 @@ static void scc_writeback_values( break; case OP_ADDRCONST: mkaddr_const(state, ins, - lnode->val->left, lnode->val->u.cval); + RHS(lnode->val, 0), lnode->val->u.cval); break; default: /* By default don't copy the changes, @@ -11679,7 +11999,6 @@ static void scc_transform(struct compile_state *state) } scc_writeback_values(state, &scc); - /* FINISH ME move constants from scratch values into the tree */ free_scc_state(state, &scc); } @@ -11692,6 +12011,11 @@ static void optimize(struct compile_state *state) if (state->debug & DEBUG_TRIPLES) { print_triples(state); } + /* Replace structures with simpler data types */ + flatten_structures(state); + if (state->debug & DEBUG_TRIPLES) { + print_triples(state); + } /* Analize the intermediate code */ setup_basic_blocks(state); analyze_idominators(state); @@ -12123,9 +12447,9 @@ static void get_imm32(struct triple *ins, struct triple **expr) if ((*expr)->op != OP_COPY) { return; } - imm = (*expr)->left; + imm = RHS((*expr), 0); while(imm->op == OP_COPY) { - imm = imm->left; + imm = RHS(imm, 0); } if (imm->op != OP_INTCONST) { return; @@ -12141,9 +12465,9 @@ static void get_imm8(struct triple *ins, struct triple **expr) if ((*expr)->op != OP_COPY) { return; } - imm = (*expr)->left; + imm = RHS((*expr), 0); while(imm->op == OP_COPY) { - imm = imm->left; + imm = RHS(imm, 0); } if (imm->op != OP_INTCONST) { return; @@ -12178,7 +12502,7 @@ static struct triple *pre_copy(struct compile_state *state, tmp->col = ins->col; tmp->u.block = ins->u.block; tmp->id = MK_REG_ID(REG_UNSET, REGCM_GPR32_8 | REGCM_GPR16_8); - use_triple(tmp->left, tmp); + use_triple(RHS(tmp, 0), tmp); insert_triple(state, ins, tmp); in = triple(state, OP_COPY, tmp->type, tmp, 0); @@ -12194,7 +12518,7 @@ static struct triple *pre_copy(struct compile_state *state, in->id = MK_REG_ID(reg, mask); unuse_triple(*expr, ins); *expr = in; - use_triple(in->left, in); + use_triple(RHS(in, 0), in); use_triple(in, ins); insert_triple(state, ins, in); return in; @@ -12244,14 +12568,20 @@ static void fixup_branches(struct compile_state *state, } else if (entry->member->op == OP_BRANCH) { struct triple *branch, *test; + struct triple *left, *right; + left = right = 0; + left = RHS(cmp, 0); + if (TRIPLE_RHS(cmp->sizes) > 1) { + right = RHS(cmp, 1); + } branch = entry->member; test = pre_triple(state, branch, - cmp->op, cmp->type, cmp->left, cmp->right); + cmp->op, cmp->type, left, right); test->id = MK_REG_ID(REG_EFLAGS, REGCM_FLAGS); - unuse_triple(branch->right, branch); - branch->right = test; + unuse_triple(RHS(branch, 0), branch); + RHS(branch, 0) = test; branch->op = jmp_op; - use_triple(branch->right, branch); + use_triple(RHS(branch, 0), branch); } } } @@ -12276,7 +12606,7 @@ static void bool_cmp(struct compile_state *state, ins->op = cmp_op; ins->id = MK_REG_ID(REG_EFLAGS, REGCM_FLAGS); if (cmp_op == OP_CMP) { - get_imm32(ins, &ins->right); + get_imm32(ins, &RHS(ins, 1)); } /* Generate the instruction sequence that will transform the * result of the comparison into a logical value. @@ -12315,6 +12645,18 @@ static void bool_cmp(struct compile_state *state, fixup_branches(state, ins, set, jmp_op); } +static void verify_lhs(struct compile_state *state, struct triple *ins) +{ + struct triple *next; + int lhs, i; + lhs = TRIPLE_LHS(ins->sizes); + for(next = ins->next, i = 0; i < lhs; i++, next = next->next) { + if (next != LHS(ins, i)) { + internal_error(state, ins, "malformed lhs on %s", + tops(ins->op)); + } + } +} static void transform_to_arch_instructions(struct compile_state *state) { @@ -12326,7 +12668,7 @@ static void transform_to_arch_instructions(struct compile_state *state) */ struct triple *ins, *first, *next; struct triple *in, *in2; - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { next = ins->next; @@ -12368,7 +12710,7 @@ static void transform_to_arch_instructions(struct compile_state *state) mask = 0; break; } - in = pre_copy(state, ins, &ins->right, REG_UNSET, mask); + in = pre_copy(state, ins, &RHS(ins, 0), REG_UNSET, mask); break; } case OP_LOAD: @@ -12397,36 +12739,36 @@ static void transform_to_arch_instructions(struct compile_state *state) case OP_AND: case OP_XOR: case OP_OR: - get_imm32(ins, &ins->right); - in = pre_copy(state, ins, &ins->left, + get_imm32(ins, &RHS(ins, 1)); + in = pre_copy(state, ins, &RHS(ins, 0), alloc_virtual_reg(), ID_REG_CLASSES(ins->id)); ins->id = in->id; break; case OP_SL: case OP_SSR: case OP_USR: - get_imm8(ins, &ins->right); - in = pre_copy(state, ins, &ins->left, + get_imm8(ins, &RHS(ins, 1)); + in = pre_copy(state, ins, &RHS(ins, 0), alloc_virtual_reg(), ID_REG_CLASSES(ins->id)); ins->id = in->id; - if (!IS_CONST_OP(ins->right->op)) { - in2 = pre_copy(state, ins, &ins->right, + if (!is_const(RHS(ins, 1))) { + in2 = pre_copy(state, ins, &RHS(ins, 1), REG_CL, REGCM_GPR8); } break; case OP_INVERT: case OP_NEG: - in = pre_copy(state, ins, &ins->left, + in = pre_copy(state, ins, &RHS(ins, 0), alloc_virtual_reg(), ID_REG_CLASSES(ins->id)); ins->id = in->id; break; case OP_SMUL: - get_imm32(ins, &ins->right); - in = pre_copy(state, ins, &ins->left, + get_imm32(ins, &RHS(ins, 1)); + in = pre_copy(state, ins, &RHS(ins, 0), alloc_virtual_reg(), ID_REG_CLASSES(ins->id)); ins->id = in->id; - if (!IS_CONST_OP(ins->right->op)) { - in2 = pre_copy(state, ins, &ins->right, + if (!is_const(RHS(ins, 1))) { + in2 = pre_copy(state, ins, &RHS(ins, 1), REG_UNSET, REGCM_GPR32); } break; @@ -12467,7 +12809,7 @@ static void transform_to_arch_instructions(struct compile_state *state) bool_cmp(state, ins, OP_TEST, OP_JMP_EQ, OP_SET_EQ); break; case OP_BRANCH: - if (ins->right) { + if (TRIPLE_RHS(ins->sizes) > 0) { internal_error(state, ins, "bad branch test"); } ins->op = OP_JMP; @@ -12476,14 +12818,14 @@ static void transform_to_arch_instructions(struct compile_state *state) case OP_INB: case OP_INW: case OP_INL: - get_imm8(ins, &ins->left); + get_imm8(ins, &RHS(ins, 0)); switch(ins->op) { case OP_INB: ins->id = MK_REG_ID(REG_AL, REGCM_GPR8); break; case OP_INW: ins->id = MK_REG_ID(REG_AX, REGCM_GPR16); break; case OP_INL: ins->id = MK_REG_ID(REG_EAX, REGCM_GPR32); break; } - if (!IS_CONST_OP(ins->left->op)) { - in = pre_copy(state, ins, &ins->left, + if (!is_const(RHS(ins, 0))) { + in = pre_copy(state, ins, &RHS(ins, 0), REG_DX, REGCM_GPR16); } break; @@ -12492,26 +12834,41 @@ static void transform_to_arch_instructions(struct compile_state *state) case OP_OUTL: { unsigned reg, mask; - get_imm8(ins, &ins->right); + get_imm8(ins, &RHS(ins, 1)); switch(ins->op) { case OP_OUTB: reg = REG_AL; mask = REGCM_GPR8; break; case OP_OUTW: reg = REG_AX; mask = REGCM_GPR16; break; case OP_OUTL: reg = REG_EAX; mask = REGCM_GPR32; break; default: reg = REG_UNSET; mask = 0; break; } - in = pre_copy(state, ins, &ins->left, reg, mask); - if (!IS_CONST_OP(ins->right->op)) { - in2 = pre_copy(state, ins, &ins->right, + in = pre_copy(state, ins, &RHS(ins, 0), reg, mask); + if (!is_const(RHS(ins, 1))) { + in2 = pre_copy(state, ins, &RHS(ins, 1), REG_DX, REGCM_GPR16); } break; } case OP_BSF: case OP_BSR: - in = pre_copy(state, ins, &ins->left, + in = pre_copy(state, ins, &RHS(ins, 0), REG_UNSET, REGCM_GPR32); ins->id = MK_REG_ID(REG_UNSET, REGCM_GPR32 | REGCM_GPR32_8); break; + case OP_RDMSR: + in = pre_copy(state, ins, &RHS(ins, 0), + REG_ECX, REGCM_GPR32); + verify_lhs(state, ins); + LHS(ins,0)->id = MK_REG_ID(REG_EAX, REGCM_GPR32); + LHS(ins,1)->id = MK_REG_ID(REG_EDX, REGCM_GPR32); + next = ins->next->next->next; + break; + case OP_WRMSR: + pre_copy(state, ins, &RHS(ins, 0), REG_ECX, REGCM_GPR32); + pre_copy(state, ins, &RHS(ins, 1), REG_EAX, REGCM_GPR32); + pre_copy(state, ins, &RHS(ins, 2), REG_EDX, REGCM_GPR32); + break; + case OP_HLT: + break; /* Already transformed instructions */ case OP_CMP: case OP_TEST: @@ -12528,6 +12885,8 @@ static void transform_to_arch_instructions(struct compile_state *state) case OP_SET_SLESSEQ: case OP_SET_ULESSEQ: case OP_SET_SMOREEQ: case OP_SET_UMOREEQ: break; + /* Unhandled instructions */ + case OP_PIECE: default: internal_error(state, ins, "unhandled ins: %d %s\n", ins->op, tops(ins->op)); @@ -12537,14 +12896,12 @@ static void transform_to_arch_instructions(struct compile_state *state) } while(ins != first); } - - static void generate_local_labels(struct compile_state *state) { struct triple *first, *label; int label_counter; label_counter = 0; - first = state->main_function->left; + first = RHS(state->main_function, 0); label = first; do { if ((label->op == OP_LABEL) || @@ -12627,28 +12984,28 @@ static void print_binary_op(struct compile_state *state, { unsigned mask; mask = REGCM_GPR32 | REGCM_GPR16 | REGCM_GPR8; - if (ins->left->id != ins->id) { + if (RHS(ins, 0)->id != ins->id) { internal_error(state, ins, "invalid register assignment"); } - if (IS_CONST_OP(ins->right->op)) { + if (is_const(RHS(ins, 1))) { fprintf(fp, "\t%s $%lu, %s\n", op, - ins->right->u.cval, - reg(state, ins->left, mask)); + RHS(ins, 1)->u.cval, + reg(state, RHS(ins, 0), mask)); } else { unsigned lmask, rmask; int lreg, rreg; - lreg = check_reg(state, ins->left, mask); - rreg = check_reg(state, ins->right, mask); + lreg = check_reg(state, RHS(ins, 0), mask); + rreg = check_reg(state, RHS(ins, 1), mask); lmask = arch_reg_regcm(state, lreg); rmask = arch_reg_regcm(state, rreg); mask = lmask & rmask; fprintf(fp, "\t%s %s, %s\n", op, - reg(state, ins->right, mask), - reg(state, ins->left, mask)); + reg(state, RHS(ins, 1), mask), + reg(state, RHS(ins, 0), mask)); } } static void print_unary_op(struct compile_state *state, @@ -12658,7 +13015,7 @@ static void print_unary_op(struct compile_state *state, mask = REGCM_GPR32 | REGCM_GPR16 | REGCM_GPR8; fprintf(fp, "\t%s %s\n", op, - reg(state, ins->left, mask)); + reg(state, RHS(ins, 0), mask)); } static void print_op_shift(struct compile_state *state, @@ -12666,21 +13023,21 @@ static void print_op_shift(struct compile_state *state, { unsigned mask; mask = REGCM_GPR32 | REGCM_GPR16 | REGCM_GPR8; - if (ins->left->id != ins->id) { + if (RHS(ins, 0)->id != ins->id) { internal_error(state, ins, "invalid register assignment"); } - if (IS_CONST_OP(ins->right->op)) { + if (is_const(RHS(ins, 1))) { fprintf(fp, "\t%s $%lu, %s\n", op, - ins->right->u.cval, - reg(state, ins->left, mask)); + RHS(ins, 1)->u.cval, + reg(state, RHS(ins, 0), mask)); } else { fprintf(fp, "\t%s %s, %s\n", op, - reg(state, ins->right, REGCM_GPR8), - reg(state, ins->left, mask)); + reg(state, RHS(ins, 1), REGCM_GPR8), + reg(state, RHS(ins, 0), mask)); } } @@ -12703,20 +13060,20 @@ static void print_op_in(struct compile_state *state, struct triple *ins, FILE *f if (!reg_is_reg(state, dreg, REG_EAX)) { internal_error(state, ins, "dst != %%eax"); } - if (IS_CONST_OP(ins->left->op)) { + if (is_const(RHS(ins, 0))) { fprintf(fp, "\t%s $%lu, %s\n", - op, ins->left->u.cval, + op, RHS(ins, 0)->u.cval, reg(state, ins, mask)); } else { int addr_reg; - addr_reg = check_reg(state, ins->left, REGCM_GPR16); + addr_reg = check_reg(state, RHS(ins, 0), REGCM_GPR16); if (!reg_is_reg(state, addr_reg, REG_DX)) { internal_error(state, ins, "src != %%dx"); } fprintf(fp, "\t%s %s, %s\n", op, - reg(state, ins->left, REGCM_GPR16), + reg(state, RHS(ins, 0), REGCM_GPR16), reg(state, ins, mask)); } } @@ -12736,25 +13093,25 @@ static void print_op_out(struct compile_state *state, struct triple *ins, FILE * op = 0; break; } - lreg = check_reg(state, ins->left, mask); + lreg = check_reg(state, RHS(ins, 0), mask); if (!reg_is_reg(state, lreg, REG_EAX)) { internal_error(state, ins, "src != %%eax"); } - if (IS_CONST_OP(ins->right->op)) { + if (is_const(RHS(ins, 1))) { fprintf(fp, "\t%s %s, $%lu\n", - op, reg(state, ins->left, mask), - ins->right->u.cval); + op, reg(state, RHS(ins, 0), mask), + RHS(ins, 1)->u.cval); } else { int addr_reg; - addr_reg = check_reg(state, ins->right, REGCM_GPR16); + addr_reg = check_reg(state, RHS(ins, 1), REGCM_GPR16); if (!reg_is_reg(state, addr_reg, REG_DX)) { internal_error(state, ins, "dst != %%dx"); } fprintf(fp, "\t%s %s, %s\n", op, - reg(state, ins->left, mask), - reg(state, ins->right, REGCM_GPR16)); + reg(state, RHS(ins, 0), mask), + reg(state, RHS(ins, 1), REGCM_GPR16)); } } @@ -12767,18 +13124,18 @@ static void print_op_move(struct compile_state *state, int omit_copy = 1; /* Is it o.k. to omit a noop copy? */ struct triple *dst, *src; if (ins->op == OP_COPY) { - src = ins->left; + src = RHS(ins, 0); dst = ins; } else if (ins->op == OP_WRITE) { - dst = ins->left; - src = ins->right; + dst = LHS(ins, 0); + src = RHS(ins, 0); } else { internal_error(state, ins, "unknown move operation"); src = dst = 0; } - if (!IS_CONST_OP(src->op)) { + if (!is_const(src)) { int src_reg, dst_reg; int src_regcm, dst_regcm; src_reg = ID_REG(src->id); @@ -12876,7 +13233,7 @@ static void print_op_move(struct compile_state *state, } case OP_ADDRCONST: fprintf(fp, "\tmov $L%lu+%lu, %s\n", - src->left->u.cval, + RHS(src, 0)->u.cval, src->u.cval, reg(state, dst, REGCM_GPR32)); break; @@ -12890,7 +13247,7 @@ static void print_op_load(struct compile_state *state, { struct triple *dst, *src; dst = ins; - src = ins->left; + src = RHS(ins, 0); if (is_const(src) || is_const(dst)) { internal_error(state, ins, "unknown load operation"); } @@ -12904,8 +13261,8 @@ static void print_op_store(struct compile_state *state, struct triple *ins, FILE *fp) { struct triple *dst, *src; - dst = ins->left; - src = ins->right; + dst = LHS(ins, 0); + src = RHS(ins, 0); if (is_const(src) && (src->op == OP_INTCONST)) { long_t value; value = (long_t)(src->u.cval); @@ -12936,15 +13293,15 @@ static void print_op_store(struct compile_state *state, static void print_op_smul(struct compile_state *state, struct triple *ins, FILE *fp) { - if (!IS_CONST_OP(ins->right->op)) { + if (!is_const(RHS(ins, 1))) { fprintf(fp, "\timul %s, %s\n", - reg(state, ins->right, REGCM_GPR32), - reg(state, ins->left, REGCM_GPR32)); + reg(state, RHS(ins, 1), REGCM_GPR32), + reg(state, RHS(ins, 0), REGCM_GPR32)); } else { fprintf(fp, "\timul $%ld, %s\n", - ins->right->u.cval, - reg(state, ins->left, REGCM_GPR32)); + RHS(ins, 1)->u.cval, + reg(state, RHS(ins, 0), REGCM_GPR32)); } } @@ -12958,22 +13315,22 @@ static void print_op_cmp(struct compile_state *state, if (!reg_is_reg(state, dreg, REG_EFLAGS)) { internal_error(state, ins, "bad dest register for cmp"); } - if (IS_CONST_OP(ins->right->op)) { + if (is_const(RHS(ins, 1))) { fprintf(fp, "\tcmp $%lu, %s\n", - ins->right->u.cval, - reg(state, ins->left, mask)); + RHS(ins, 1)->u.cval, + reg(state, RHS(ins, 0), mask)); } else { unsigned lmask, rmask; int lreg, rreg; - lreg = check_reg(state, ins->left, mask); - rreg = check_reg(state, ins->right, mask); + lreg = check_reg(state, RHS(ins, 0), mask); + rreg = check_reg(state, RHS(ins, 1), mask); lmask = arch_reg_regcm(state, lreg); rmask = arch_reg_regcm(state, rreg); mask = lmask & rmask; fprintf(fp, "\tcmp %s, %s\n", - reg(state, ins->right, mask), - reg(state, ins->left, mask)); + reg(state, RHS(ins, 1), mask), + reg(state, RHS(ins, 0), mask)); } } @@ -12983,8 +13340,8 @@ static void print_op_test(struct compile_state *state, unsigned mask; mask = REGCM_GPR32 | REGCM_GPR16 | REGCM_GPR8; fprintf(fp, "\ttest %s, %s\n", - reg(state, ins->left, mask), - reg(state, ins->left, mask)); + reg(state, RHS(ins, 0), mask), + reg(state, RHS(ins, 0), mask)); } static void print_op_branch(struct compile_state *state, @@ -12992,22 +13349,22 @@ static void print_op_branch(struct compile_state *state, { const char *bop = "j"; if (branch->op == OP_JMP) { - if (branch->right) { + if (TRIPLE_RHS(branch->sizes) != 0) { internal_error(state, branch, "jmp with condition?"); } bop = "jmp"; } else { - if (!branch->right) { + if (TRIPLE_RHS(branch->sizes) != 1) { internal_error(state, branch, "jmpcc without condition?"); } - check_reg(state, branch->right, REGCM_FLAGS); - if ((branch->right->op != OP_CMP) && - (branch->right->op != OP_TEST)) { + check_reg(state, RHS(branch, 0), REGCM_FLAGS); + if ((RHS(branch, 0)->op != OP_CMP) && + (RHS(branch, 0)->op != OP_TEST)) { internal_error(state, branch, "bad branch test"); } #warning "FIXME I have observed instructions between the test and branch instructions" - if (branch->right->next != branch) { + if (RHS(branch, 0)->next != branch) { internal_error(state, branch, "branch does not follow test"); } switch(branch->op) { @@ -13028,22 +13385,22 @@ static void print_op_branch(struct compile_state *state, } fprintf(fp, "\t%s L%lu\n", - bop, branch->left->u.cval); + bop, TARG(branch, 0)->u.cval); } static void print_op_set(struct compile_state *state, struct triple *set, FILE *fp) { const char *sop = "set"; - if (!set->left) { + if (TRIPLE_RHS(set->sizes) != 1) { internal_error(state, set, "setcc without condition?"); } - check_reg(state, set->left, REGCM_FLAGS); - if ((set->left->op != OP_CMP) && - (set->left->op != OP_TEST)) { + check_reg(state, RHS(set, 0), REGCM_FLAGS); + if ((RHS(set, 0)->op != OP_CMP) && + (RHS(set, 0)->op != OP_TEST)) { internal_error(state, set, "bad set test"); } - if (set->left->next != set) { + if (RHS(set, 0)->next != set) { internal_error(state, set, "set does not follow test"); } switch(set->op) { @@ -13083,7 +13440,7 @@ static void print_op_bit_scan(struct compile_state *state, "\tmovl $-1, %s\n" "1:\n", op, - reg(state, ins->left, REGCM_GPR32), + reg(state, RHS(ins, 0), REGCM_GPR32), reg(state, ins, REGCM_GPR32), reg(state, ins, REGCM_GPR32)); } @@ -13143,7 +13500,7 @@ static void print_sdecl(struct compile_state *state, fprintf(fp, ".section \".rom.data\"\n"); fprintf(fp, ".balign %d\n", align_of(state, ins->type)); fprintf(fp, "L%lu:\n", ins->u.cval); - print_const(state, ins->left, fp); + print_const(state, MISC(ins, 0), fp); fprintf(fp, ".section \".rom.text\"\n"); } @@ -13215,6 +13572,13 @@ static void print_instruction(struct compile_state *state, case OP_BSR: print_op_bit_scan(state, ins, fp); break; + case OP_RDMSR: + verify_lhs(state, ins); + fprintf(fp, "\trdmsr\n"); + break; + case OP_WRMSR: + fprintf(fp, "\twrmsr\n"); + break; case OP_HLT: fprintf(fp, "\thlt\n"); break; @@ -13224,6 +13588,9 @@ static void print_instruction(struct compile_state *state, } fprintf(fp, "L%lu:\n", ins->u.cval); break; + /* Ignore OP_PIECE */ + case OP_PIECE: + break; /* Operations I am not yet certain how to handle */ case OP_UMUL: case OP_SDIV: case OP_UDIV: @@ -13253,7 +13620,7 @@ static void print_instructions(struct compile_state *state) last_filename = 0; fp = stdout; fprintf(fp, ".section \".rom.text\"\n"); - first = state->main_function->left; + first = RHS(state->main_function, 0); ins = first; do { if (print_location && diff --git a/util/romcc/tests/simple_test19.c b/util/romcc/tests/simple_test19.c new file mode 100644 index 0000000000..0bdcf422ef --- /dev/null +++ b/util/romcc/tests/simple_test19.c @@ -0,0 +1,24 @@ +static void hlt(void) +{ + __builtin_hlt(); +} + +typedef __builtin_msr_t msr_t; + +static msr_t rdmsr(unsigned long index) +{ + return __builtin_rdmsr(index); +} + +static void wrmsr(unsigned long index, msr_t msr) +{ + __builtin_wrmsr(index, msr.lo, msr.hi); +} + +static void main(void) +{ + msr_t msr; + msr = rdmsr(0x1234); + msr.lo &= ~(1<<5); + wrmsr(0x1234, msr); +} |