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[Bug debug/80025] [5/6 Regression] ICE w/ -O2 (-O3, -Ofast) -g -ftracer (infinite recursion in rtx_equal_for_cselib_1)
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 30 May 2017 08:23:13 +0000
- Subject: [Bug debug/80025] [5/6 Regression] ICE w/ -O2 (-O3, -Ofast) -g -ftracer (infinite recursion in rtx_equal_for_cselib_1)
- Auto-submitted: auto-generated
- References: <bug-80025-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80025
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue May 30 08:22:41 2017
New Revision: 248667
URL: https://gcc.gnu.org/viewcvs?rev=248667&root=gcc&view=rev
Log:
Backported from mainline
2017-03-31 Jakub Jelinek <jakub@redhat.com>
PR debug/80025
* cselib.c (cselib_hasher::equal): Pass 0 to rtx_equal_for_cselib_1.
(rtx_equal_for_cselib_1): Add depth argument. If depth
is 128, don't look up VALUE locs and punt. Increment
depth in recursive calls when walking VALUE locs.
* gcc.dg/torture/pr80025.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr80025.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/cselib.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog