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[Bug rtl-optimization/38774] [4.4 Regression] ice in df_refs_verify, at df-scan.c:4307
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Jan 2009 22:36:18 -0000
- Subject: [Bug rtl-optimization/38774] [4.4 Regression] ice in df_refs_verify, at df-scan.c:4307
- References: <bug-38774-12544@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #8 from jakub at gcc dot gnu dot org 2009-01-13 22:36 -------
Subject: Bug 38774
Author: jakub
Date: Tue Jan 13 22:36:06 2009
New Revision: 143355
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143355
Log:
PR rtl-optimization/38774
* combine.c (simplify_set): When undoing cc_use change, don't do
PUT_CODE on the newly created comparison, but instead put back the
old comparison.
* gcc.dg/torture/pr38774.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr38774.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38774