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[Bug tree-optimization/71428] [7 Regression] wrong code with -Os -fno-tree-forwprop (breaks in the .bswap dump)
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 07 Jun 2016 07:32:12 +0000
- Subject: [Bug tree-optimization/71428] [7 Regression] wrong code with -Os -fno-tree-forwprop (breaks in the .bswap dump)
- Auto-submitted: auto-generated
- References: <bug-71428-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71428
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jun 7 07:31:40 2016
New Revision: 237167
URL: https://gcc.gnu.org/viewcvs?rev=237167&root=gcc&view=rev
Log:
2016-06-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/71428
* tree-ssa-math-opts.c (perform_symbolic_merge): Properly distinguish
BIT_FIELD_REF op vs. load.
* gcc.dg/torture/pr71428.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr71428.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-math-opts.c