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[Bug middle-end/39976] [4.5/4.6 Regression] Big sixtrack degradation on powerpc 32/64 after revision r146817
- From: "pthaugen at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 15 Dec 2010 21:24:28 +0000
- Subject: [Bug middle-end/39976] [4.5/4.6 Regression] Big sixtrack degradation on powerpc 32/64 after revision r146817
- Auto-submitted: auto-generated
- References: <bug-39976-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39976
--- Comment #32 from Pat Haugen <pthaugen at gcc dot gnu.org> 2010-12-15 21:23:50 UTC ---
Forgot to also mention that the loop is no longer a branch on count loop, so
finding it in the original thin6d.f is a little tougher than the simple egrep
'^.L|bdnz' thin6d.s and looking for bdnz not branching to immediately
preceeding label, but reduced testcase still also exhibits the problem.