diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 4b39ff6..06bcaab 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -2972,6 +2972,17 @@ expand_unop (machine_mode mode, optab unoptab, rtx op0, rtx target, return target; } + /* Emit ~op0 as op0 ^ -1. */ + if (unoptab == one_cmpl_optab + && (SCALAR_INT_MODE_P (mode) || GET_MODE_CLASS (mode) == MODE_VECTOR_INT) + && optab_handler (xor_optab, mode) != CODE_FOR_nothing) + { + temp = expand_binop (mode, xor_optab, op0, CONSTM1_RTX (mode), + target, unsignedp, OPTAB_DIRECT); + if (temp) + return temp; + } + if (optab_to_code (unoptab) == NEG) { /* Try negating floating point values by flipping the sign bit. */ |