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From: Andrew Pinski <pinskia@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-1656] Add Plus to the op list of `(zero_one == 0) ? y : z <op> y` pattern Date: Fri, 9 Jun 2023 14:16:12 +0000 (GMT) [thread overview] Message-ID: <20230609141612.7825E385663D@sourceware.org> (raw) https://gcc.gnu.org/g:55fcaa9a8bd9c8ce97ca929fc902c88cf92786a0 commit r14-1656-g55fcaa9a8bd9c8ce97ca929fc902c88cf92786a0 Author: Andrew Pinski <apinski@marvell.com> Date: Wed Jun 7 09:05:15 2023 -0700 Add Plus to the op list of `(zero_one == 0) ? y : z <op> y` pattern This adds plus to the op list of `(zero_one == 0) ? y : z <op> y` patterns which currently has bit_ior and bit_xor. This shows up now in GCC after the boolization work that Uroš has been doing. OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions. PR tree-optimization/97711 PR tree-optimization/110155 gcc/ChangeLog: * match.pd ((zero_one == 0) ? y : z <op> y): Add plus to the op. ((zero_one != 0) ? z <op> y : y): Likewise. gcc/testsuite/ChangeLog: * gcc.dg/tree-ssa/branchless-cond-add-2.c: New test. * gcc.dg/tree-ssa/branchless-cond-add.c: New test. Diff: --- gcc/match.pd | 4 ++-- gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add-2.c | 8 ++++++++ gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add.c | 18 ++++++++++++++++++ 3 files changed, 28 insertions(+), 2 deletions(-) diff --git a/gcc/match.pd b/gcc/match.pd index 610668d562c..a17d6838c14 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -3696,7 +3696,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (max @2 @1)) /* (zero_one == 0) ? y : z <op> y -> ((typeof(y))zero_one * z) <op> y */ -(for op (bit_xor bit_ior) +(for op (bit_xor bit_ior plus) (simplify (cond (eq zero_one_valued_p@0 integer_zerop) @@ -3708,7 +3708,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (op (mult (convert:type @0) @2) @1)))) /* (zero_one != 0) ? z <op> y : y -> ((typeof(y))zero_one * z) <op> y */ -(for op (bit_xor bit_ior) +(for op (bit_xor bit_ior plus) (simplify (cond (ne zero_one_valued_p@0 integer_zerop) diff --git a/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add-2.c b/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add-2.c new file mode 100644 index 00000000000..27607e10f88 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add-2.c @@ -0,0 +1,8 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ +/* PR tree-optimization/97711 */ + +int f (int x) { return x & 1 ? x - 1 : x; } + +/* { dg-final { scan-tree-dump-times " & -2" 1 "optimized" } } */ +/* { dg-final { scan-tree-dump-not "if " "optimized" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add.c b/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add.c new file mode 100644 index 00000000000..0d81c07b03a --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/branchless-cond-add.c @@ -0,0 +1,18 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ +/* PR tree-optimization/110155 */ + +int f1(unsigned int x, unsigned int y, unsigned int z) +{ + return ((x & 1) == 0) ? y : z + y; +} + +int f2(unsigned int x, unsigned int y, unsigned int z) +{ + return ((x & 1) != 0) ? z + y : y; +} + +/* { dg-final { scan-tree-dump-times " \\\*" 2 "optimized" } } */ +/* { dg-final { scan-tree-dump-times " \\\+ " 2 "optimized" } } */ +/* { dg-final { scan-tree-dump-times " & " 2 "optimized" } } */ +/* { dg-final { scan-tree-dump-not "if " "optimized" } } */
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