On 01/11/2017 11:28 AM, Jakub Jelinek wrote:
> On Wed, Jan 11, 2017 at 11:21:08AM +0100, Christophe Lyon wrote:
>> Since then, I've noticed that
>> gcc.dg/tree-ssa/flatten-3.c scan-assembler cycle[123][: \t\n]
>> now fails on aarch64 and arm targets.
>
> It fails on x86_64-linux and i686-linux too.
>
> Jakub
>
Ok, problem is that we used to merge:
Semantic equality hit:doubleindirect1->subcycle1
Semantic equality hit:doubleindirect1->doublesubcycle1
Semantic equality hit:subcycle->doublesubcycle
and after my patch it changed to:
Semantic equality hit:doublesubcycle->subcycle
Semantic equality hit:doublesubcycle1->subcycle1
Semantic equality hit:doublesubcycle1->doubleindirect1
As output is grepped for a cycle[123], so of them would be merged.
Thus, adding -fno-ipa-icf would be the right fix.
Ready to be installed?
Thanks,
Martin
>From 2facdc8b5730568ead389e7d4af8a4f6b04e9cbc Mon Sep 17 00:00:00 2001
From: marxin <mli...@suse.cz>
Date: Wed, 11 Jan 2017 11:46:14 +0100
Subject: [PATCH] Fix flatten-3.c test-case.
gcc/testsuite/ChangeLog:
2017-01-11 Martin Liska <mli...@suse.cz>
* gcc.dg/tree-ssa/flatten-3.c: Add -fno-ipa-icf to dg-options.
---
gcc/testsuite/gcc.dg/tree-ssa/flatten-3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/flatten-3.c b/gcc/testsuite/gcc.dg/tree-ssa/flatten-3.c
index a1edb910e9d..153165c72e3 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/flatten-3.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/flatten-3.c
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options -O2 } */
+/* { dg-options -O2 -fno-ipa-icf } */
extern void do_something_usefull();
/* Check that we finish compiling even if instructed to
--
2.11.0
