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[Bug rtl-optimization/67787] [6 Regression] wrong code at -O3 on x86_64-linux-gnu
- From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 02 Oct 2015 08:37:17 +0000
- Subject: [Bug rtl-optimization/67787] [6 Regression] wrong code at -O3 on x86_64-linux-gnu
- Auto-submitted: auto-generated
- References: <bug-67787-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67787
--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Fri Oct 2 08:36:45 2015
New Revision: 228375
URL: https://gcc.gnu.org/viewcvs?rev=228375&root=gcc&view=rev
Log:
[RTL ifcvt] PR 67786, 67787: Check that intermediate instructions in the basic
block don't clobber a reg used in condition
PR rtl-optimization/67786
PR rtl-optimization/67787
* ifcvt.c (bb_valid_for_noce_process_p): Reject basic block if
it modifies a reg used in the condition calculation.
* gcc.dg/pr67786.c: New test.
* gcc.dg/pr67787.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/pr67786.c
trunk/gcc/testsuite/gcc.dg/pr67787.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ifcvt.c
trunk/gcc/testsuite/ChangeLog