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| author | Andrew Pinski <apinski@marvell.com> | 2021-05-16 10:40:16 -0700 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2021-05-23 08:08:14 +0000 |
| commit | 99b76adb94d9363d0ca31a7d34ce850e2ca9ffc5 (patch) | |
| tree | cbfa31dec87d011b45c6a5204bc44b3dc707ae73 /gcc/match.pd | |
| parent | 15d30d2f20794d29ceabcfd57d230d6387284115 (diff) | |
| download | gcc-99b76adb94d9363d0ca31a7d34ce850e2ca9ffc5.zip gcc-99b76adb94d9363d0ca31a7d34ce850e2ca9ffc5.tar.gz gcc-99b76adb94d9363d0ca31a7d34ce850e2ca9ffc5.tar.bz2 | |
Don't simplify (A & C) != 0 ? D : 0 for pointer types.
While rewriting part of PHI-OPT to use match-and-simplify,
I ran into a bug where this pattern in match.pd would hit
and would produce invalid gimple; a shift of a pointer type.
This just disables this simplification for pointer types similarly
to what is already done in PHI-OPT for the generic A ? D : 0 case.
OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.
Thanks,
Andrew Pinski
2021-5-23 Andrew Pinski <apinski@marvell.com>
gcc/
* match.pd ((A & C) != 0 ? D : 0): Limit to non pointer types.
gcc/testsuite/
* gcc.dg/gimplefe-45.c: New test.
Diffstat (limited to 'gcc/match.pd')
| -rw-r--r-- | gcc/match.pd | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index e01bb7a..1fc6b7b 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -4840,7 +4840,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (cond (ne (bit_and @0 integer_pow2p@1) integer_zerop) INTEGER_CST@2 integer_zerop) - (if (integer_pow2p (@2)) + (if (!POINTER_TYPE_P (type) && integer_pow2p (@2)) (with { int shift = (wi::exact_log2 (wi::to_wide (@2)) - wi::exact_log2 (wi::to_wide (@1))); |