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| author | Xi Ruoyao <xry111@xry111.site> | 2023-11-12 14:16:20 +0000 |
|---|---|---|
| committer | Xi Ruoyao <xry111@xry111.site> | 2023-11-13 15:51:14 +0800 |
| commit | 7ba7529ee3974667a8e68d089b606ac2fb159415 (patch) | |
| tree | 82ed38a31d4eb8af5ae281c84438531963289771 | |
| parent | 5a0c302d2d721b9650c1e354695dbba87364c334 (diff) | |
| download | gcc-7ba7529ee3974667a8e68d089b606ac2fb159415.zip gcc-7ba7529ee3974667a8e68d089b606ac2fb159415.tar.gz gcc-7ba7529ee3974667a8e68d089b606ac2fb159415.tar.bz2 | |
Fix (fcopysign x, NEGATIVE_CONST) -> (fneg (fabs x)) simplification [PR112483]
(fcopysign x, NEGATIVE_CONST) can be simplified to (fneg (fabs x)), but
a logic error in the code caused it mistakenly simplified to (fneg x)
instead.
gcc/ChangeLog:
PR rtl-optimization/112483
* simplify-rtx.cc (simplify_binary_operation_1) <case COPYSIGN>:
Fix the simplification of (fcopysign x, NEGATIVE_CONST).
| -rw-r--r-- | gcc/simplify-rtx.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc index 69d8757..2d2e5a3 100644 --- a/gcc/simplify-rtx.cc +++ b/gcc/simplify-rtx.cc @@ -4392,7 +4392,7 @@ simplify_ashift: real_convert (&f1, mode, CONST_DOUBLE_REAL_VALUE (trueop1)); rtx tmp = simplify_gen_unary (ABS, mode, op0, mode); if (REAL_VALUE_NEGATIVE (f1)) - tmp = simplify_gen_unary (NEG, mode, op0, mode); + tmp = simplify_gen_unary (NEG, mode, tmp, mode); return tmp; } if (GET_CODE (op0) == NEG || GET_CODE (op0) == ABS) |