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[Bug c/48090] gcc 4.5.2 miscompilation when building on arm
- From: "mikpe at it dot uu.se" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 13 Mar 2011 19:33:01 +0000
- Subject: [Bug c/48090] gcc 4.5.2 miscompilation when building on arm
- Auto-submitted: auto-generated
- References: <bug-48090-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48090
Mikael Pettersson <mikpe at it dot uu.se> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kazu at gcc dot gnu.org
--- Comment #8 from Mikael Pettersson <mikpe at it dot uu.se> 2011-03-13 19:32:46 UTC ---
The test case broke due to the combination of r154181 and r147087. r147087 is
Kazu's "expmed.c: Improve multiplication by more constants" patch, see
<http://gcc.gnu.org/ml/gcc-patches/2009-04/msg00915.html>.
Backporting either of these to 4.4.5 doesn't break the test case, but when both
are backported at the same time it breaks. And reverting r147087 from current
4.5 branch unbreaks the test case.