diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 35921e6..d6701df 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3819,6 +3819,25 @@ can_compare_p (enum rtx_code code, machine_mode mode, return 0; } +/* Return whether the backend can emit a vector comparison for code CODE, + comparing operands of mode CMP_OP_MODE and producing a result with + VALUE_MODE. */ + +bool +can_vcond_compare_p (enum rtx_code code, machine_mode value_mode, + machine_mode cmp_op_mode) +{ + enum insn_code icode; + bool unsigned_p = (code == LTU || code == LEU || code == GTU || code == GEU); + rtx reg1 = alloca_raw_REG (cmp_op_mode, LAST_VIRTUAL_REGISTER + 1); + rtx reg2 = alloca_raw_REG (cmp_op_mode, LAST_VIRTUAL_REGISTER + 2); + rtx test = alloca_rtx_fmt_ee (code, value_mode, reg1, reg2); + + return (icode = get_vcond_icode (value_mode, cmp_op_mode, unsigned_p)) + != CODE_FOR_nothing + && insn_operand_matches (icode, 3, test); +} + /* This function is called when we are going to emit a compare instruction that compares the values found in X and Y, using the rtl operator COMPARISON. |