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| author | Andrew Pinski <apinski@marvell.com> | 2023-06-07 07:43:50 -0700 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2023-06-09 07:14:53 -0700 |
| commit | 52c92fb3f4005051e86bb3e9c70a13fb34954cd1 (patch) | |
| tree | 0f22a2ce3f913b9b5fe5c05b09bd50d7e5008d4e /gcc | |
| parent | 7ceed7e3e29c3375e3b8c4347d1985a72bbe7f11 (diff) | |
| download | gcc-52c92fb3f4005051e86bb3e9c70a13fb34954cd1.zip gcc-52c92fb3f4005051e86bb3e9c70a13fb34954cd1.tar.gz gcc-52c92fb3f4005051e86bb3e9c70a13fb34954cd1.tar.bz2 | |
Change the `(zero_one ==/!= 0) ? y : z <op> y` patterns to use multiply rather than `(-zero_one) & z`
Since there is a pattern to convert `(-zero_one) & z` into `zero_one * z` already,
it is better if we don't do a secondary transformation. This reduces the extra
statements produced by match-and-simplify on the gimple level too.
gcc/ChangeLog:
* match.pd ((zero_one ==/!= 0) ? y : z <op> y): Use
multiply rather than negation/bit_and.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/match.pd | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 77030b3..610668d 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -3695,7 +3695,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (cond (le @0 integer_zerop@1) (negate@2 @0) integer_zerop@1) (max @2 @1)) -/* (zero_one == 0) ? y : z <op> y -> (-(typeof(y))zero_one & z) <op> y */ +/* (zero_one == 0) ? y : z <op> y -> ((typeof(y))zero_one * z) <op> y */ (for op (bit_xor bit_ior) (simplify (cond (eq zero_one_valued_p@0 @@ -3705,9 +3705,9 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) > 1 && (INTEGRAL_TYPE_P (TREE_TYPE (@0)))) - (op (bit_and (negate (convert:type @0)) @2) @1)))) + (op (mult (convert:type @0) @2) @1)))) -/* (zero_one != 0) ? z <op> y : y -> (-(typeof(y))zero_one & z) <op> y */ +/* (zero_one != 0) ? z <op> y : y -> ((typeof(y))zero_one * z) <op> y */ (for op (bit_xor bit_ior) (simplify (cond (ne zero_one_valued_p@0 @@ -3717,7 +3717,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) > 1 && (INTEGRAL_TYPE_P (TREE_TYPE (@0)))) - (op (bit_and (negate (convert:type @0)) @2) @1)))) + (op (mult (convert:type @0) @2) @1)))) /* Simplifications of shift and rotates. */ |