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| author | Richard Biener <rguenther@suse.de> | 2021-11-15 12:13:40 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-11-24 11:02:13 +0100 |
| commit | d9ca2ca381e44a332703155d07b50b84aa21f80d (patch) | |
| tree | adce1c72b1d680be1b4505e749f92cd15286570f | |
| parent | 5bca26742cf3357bf4e20ec97eee4c7f7de17ce0 (diff) | |
| download | gcc-d9ca2ca381e44a332703155d07b50b84aa21f80d.zip gcc-d9ca2ca381e44a332703155d07b50b84aa21f80d.tar.gz gcc-d9ca2ca381e44a332703155d07b50b84aa21f80d.tar.bz2 | |
middle-end/103193 - avoid canonicalizing <= and >= to == for floats
This avoids doing aforementioned canoncalization when -ftrapping-math
is in effect and we honor NaNs.
2021-11-15 Richard Biener <rguenther@suse.de>
PR middle-end/103193
* match.pd: Avoid canonicalizing (le/ge @0 @0) to (eq @0 @0)
with NaNs and -ftrapping-math.
| -rw-r--r-- | gcc/match.pd | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 3e54e2cf..5adcd6b 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -4671,7 +4671,10 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (! FLOAT_TYPE_P (TREE_TYPE (@0)) || ! HONOR_NANS (@0)) { constant_boolean_node (true, type); } - (if (cmp != EQ_EXPR) + (if (cmp != EQ_EXPR + /* With -ftrapping-math conversion to EQ loses an exception. */ + && (! FLOAT_TYPE_P (TREE_TYPE (@0)) + || ! flag_trapping_math)) (eq @0 @0))))) (for cmp (ne gt lt) (simplify |