The following reply was made to PR ports/178332; it has been noted by GNATS.
From: [email protected] (dfilter service) To: [email protected] Cc: Subject: Re: ports/178332: commit references a PR Date: Sun, 26 May 2013 14:14:49 +0000 (UTC) Author: dim Date: Sun May 26 14:14:42 2013 New Revision: 250997 URL: http://svnweb.freebsd.org/changeset/base/250997 Log: Pull in r182656 from upstream llvm trunk: LoopVectorize: LoopSimplify can't canonicalize loops with an indirectbr in it, don't assert on those cases. Fixes PR16139. This should fix clang assertion failures when optimizing at -O3, similar to: Assertion failed: (TheLoop->getLoopPreheader() && "No preheader!!"), function canVectorize, file contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp, line 2171. Reported by: O. Hartmann <[email protected]> PR: ports/178332, ports/178977 MFC after: 3 days Modified: head/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp Modified: head/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp ============================================================================== --- head/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp Sun May 26 12:36:56 2013 (r250996) +++ head/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp Sun May 26 14:14:42 2013 (r250997) @@ -2169,7 +2169,10 @@ bool LoopVectorizationLegality::canVecto } bool LoopVectorizationLegality::canVectorize() { - assert(TheLoop->getLoopPreheader() && "No preheader!!"); + // We must have a loop in canonical form. Loops with indirectbr in them cannot + // be canonicalized. + if (!TheLoop->getLoopPreheader()) + return false; // We can only vectorize innermost loops. if (TheLoop->getSubLoopsVector().size()) _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-gecko To unsubscribe, send any mail to "[email protected]"
