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[Bug tree-optimization/42916] [4.5 Regression] "-fcompare-debug failure" with "-O1 -funroll-loops -ftree-vectorize"
- From: "zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Feb 2010 00:47:00 -0000
- Subject: [Bug tree-optimization/42916] [4.5 Regression] "-fcompare-debug failure" with "-O1 -funroll-loops -ftree-vectorize"
- References: <bug-42916-14164@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from zsojka at seznam dot cz 2010-02-01 00:46 -------
Created an attachment (id=19771)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19771&action=view)
reduced testcase, better yet longer
This one doesn't need -m32, and fails with both -O1 and -O2
Command line:
gcc -O1 -funroll-loops -ftree-vectorize -fcompare-debug -c pr42916-2.c
or
gcc -O2 -funroll-loops -ftree-vectorize -fcompare-debug -c pr42916-2.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42916