diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index c00562f..8a2697b 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -246,6 +246,7 @@ static optab init_optab PROTO((enum rtx_code)); static void init_libfuncs PROTO((optab, int, int, char *, int)); static void init_integral_libfuncs PROTO((optab, char *, int)); static void init_floating_libfuncs PROTO((optab, char *, int)); +static void init_traps PROTO((void)); /* Add a REG_EQUAL note to the last insn in SEQ. TARGET is being set to the result of operation CODE applied to OP0 (and OP1 if it is a binary @@ -4380,6 +4381,10 @@ init_optabs () chkr_check_exec_libfunc = gen_rtx (SYMBOL_REF, VOIDmode, "chkr_check_exec"); chkr_check_str_libfunc = gen_rtx (SYMBOL_REF, VOIDmode, "chkr_check_str"); +#ifdef HAVE_conditional_trap + init_traps (); +#endif + #ifdef INIT_TARGET_OPTABS /* Allow the target to add more libcalls or rename some, etc. */ INIT_TARGET_OPTABS; @@ -4402,3 +4407,50 @@ ldexp(x,n) return x; } #endif /* BROKEN_LDEXP */ + +#ifdef HAVE_conditional_trap +/* The insn generating function can not take an rtx_code argument. + TRAP_RTX is used as an rtx argument. Its code is replaced with + the code to be used in the trap insn and all other fields are + ignored. + + ??? Will need to change to support garbage collection. */ +static rtx trap_rtx; + +static void +init_traps () +{ + if (HAVE_conditional_trap) + trap_rtx = gen_rtx_fmt_ee (EQ, VOIDmode, NULL_RTX, NULL_RTX); +} +#endif + +/* Generate insns to trap with code TCODE if OP1 and OP2 satisfy condition + CODE. Return 0 on failure. */ + +rtx +gen_cond_trap (code, op1, op2, tcode) + enum rtx_code code; + rtx op1, op2, tcode; +{ + enum machine_mode mode = GET_MODE (op1); + enum insn_code icode; + + if (mode == VOIDmode) + return 0; + +#ifdef HAVE_conditional_trap + if (HAVE_conditional_trap + && cmp_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing) + { + rtx insn; + emit_insn (GEN_FCN (cmp_optab->handlers[(int) mode].insn_code) (op1, op2)); + PUT_CODE (trap_rtx, code); + insn = gen_conditional_trap (trap_rtx, tcode); + if (insn) + return insn; + } +#endif + + return 0; +} |