From 0552605b7b27dc6beed62e71bd05bc1efd191c0d Mon Sep 17 00:00:00 2001 From: Xionghu Luo Date: Mon, 10 Jan 2022 20:05:56 -0600 Subject: [PATCH] testsuite: Fix regression on m32 by r12-6087 [PR103820] r12-6087 will avoid move cold bb out of hot loop, while the original intent of this testcase is to hoist divides out of loop and CSE them to only one divide. So increase the loop count to turn the cold bb to hot bb again. Then the 3 divides could be rewritten with same reciptmp. Tested pass on Power-Linux {32,64}, x86 {64,32} and i686-linux. gcc/testsuite/ChangeLog: PR testsuite/103820 * gcc.dg/tree-ssa/recip-3.c: Adjust. --- gcc/testsuite/gcc.dg/tree-ssa/recip-3.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/gcc/testsuite/gcc.dg/tree-ssa/recip-3.c b/gcc/testsuite/gcc.dg/tree-ssa/recip-3.c index 641c91e719e2..410b28044b48 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/recip-3.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/recip-3.c @@ -1,7 +1,7 @@ /* { dg-do compile } */ /* { dg-options "-O1 -fno-trapping-math -funsafe-math-optimizations -fdump-tree-recip" } */ -double F[2] = { 0.0, 0.0 }, e; +double F[5] = { 0.0, 0.0 }, e; /* In this case the optimization is interesting. */ float h () @@ -13,7 +13,7 @@ float h () d = 2.*e; E = 1. - d; - for( i=0; i < 2; i++ ) + for( i=0; i < 5; i++ ) if( d > 0.01 ) { P = ( W < E ) ? (W - E)/d : (E - W)/d; @@ -23,4 +23,4 @@ float h () F[0] += E / d; } -/* { dg-final { scan-tree-dump-times " / " 5 "recip" } } */ +/* { dg-final { scan-tree-dump-times " / " 1 "recip" } } */ -- 2.47.2