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* [gcc r11-8186] re PR tree-optimization/93210 (Sub-optimal code optimization on struct/combound constexpr (gcc vs. c
@ 2021-04-15 6:05 Stefan Schulze Frielinghaus
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From: Stefan Schulze Frielinghaus @ 2021-04-15 6:05 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:417c36cfd620bf2b047852c2aa9ac49004aed2bc
commit r11-8186-g417c36cfd620bf2b047852c2aa9ac49004aed2bc
Author: Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
Date: Thu Apr 15 08:03:47 2021 +0200
re PR tree-optimization/93210 (Sub-optimal code optimization on struct/combound constexpr (gcc vs. clang))
Regarding test gcc.dg/pr93210.c, on different targets GIMPLE code may
slightly differ which is why the scan-tree-dump-times directive may
fail. For example, for a RETURN_EXPR on x86_64 we have
return 0x11100f0e0d0c0a090807060504030201;
whereas on IBM Z the first operand is a RESULT_DECL like
<retval> = 0x102030405060708090a0c0d0e0f1011;
return <retval>;
gcc/testsuite/ChangeLog:
* gcc.dg/pr93210.c: Adapt regex in order to also support a
RESULT_DECL as an operand for a RETURN_EXPR.
Diff:
---
gcc/testsuite/gcc.dg/pr93210.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/pr93210.c b/gcc/testsuite/gcc.dg/pr93210.c
index ec4194b6b49..134d32bc505 100644
--- a/gcc/testsuite/gcc.dg/pr93210.c
+++ b/gcc/testsuite/gcc.dg/pr93210.c
@@ -1,7 +1,7 @@
/* PR tree-optimization/93210 */
/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
-/* { dg-final { scan-tree-dump-times "return \[0-9]\[0-9a-fA-FxX]*;" 31 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "(?:return|<retval> =) \[0-9]\[0-9a-fA-FxX]*;" 31 "optimized" } } */
#ifdef __SIZEOF_INT128__
typedef unsigned __int128 L;
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