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[Bug tree-optimization/46142] [4.6 Regression] FMA test failures
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 31 Oct 2010 14:27:44 +0000
- Subject: [Bug tree-optimization/46142] [4.6 Regression] FMA test failures
- Auto-submitted: auto-generated
- References: <bug-46142-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46142
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-31 14:27:41 UTC ---
When configured with --with-cpu=atom, I got
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfmadd...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfmsub...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfnmadd...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfnmsub...pd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfmaddpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfmsubpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfnmaddpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfnmsubpd 1
since -mtune=atom disables double precision vectorizer.
We need to pass -mtune=generic to those 2 testcases.