Test 183.equake from SPEC CPU2000 gets wrong results on powerpc64-linux (-m32
or -m64) when compiled with either "-O2 -fgraphite-identity" or "-O2
-floop-parallelize-all". I'll attach an executable testcase that demonstrates
the failure. Test 178.galgel fails with the same options but I haven't
investigated it.
The failure starts with the merge from the Graphite branch for r150301. With
options "-O2 -fgraphite-identity" the minimized testcase and the two CPU2000
tests pass with r150248, the last revision before that merge that builds on
powerpc64-linux. They also pass with GCC 4.4.2 with "-O2 -fgraphite-identity".
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Summary: wrong code for -fgraphite-identify in 183.equake
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42644
