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| author | dim <dim@FreeBSD.org> | 2013-04-23 18:58:39 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2013-04-23 18:58:39 +0000 |
| commit | 28c80ff39ac4183c05e219f9962f3d58d5e4f8fa (patch) | |
| tree | 04933ea9cce5fcd593390bbd8ef38742ede54f78 /contrib/llvm/lib/Transforms/Scalar | |
| parent | 0f4836399dc2933c7bbcac1f478c3ff628f03d8e (diff) | |
| download | FreeBSD-src-28c80ff39ac4183c05e219f9962f3d58d5e4f8fa.zip FreeBSD-src-28c80ff39ac4183c05e219f9962f3d58d5e4f8fa.tar.gz | |
Pull in r180121 from upstream llvm trunk:
LoopVectorizer: Fix 15830. When scalarizing and unrolling stores make
sure that the order in which the elements are scalarized is the same
as the original order.
This fixes a miscompilation in FreeBSD's regex library.
This should fix lib/libc/regex/regcomp.c at -O3 with clang 3.3 r178860
on CPUs with SSE. Before this change, the vectorizer could incorrectly
rearrange the second loop in computejumps(), leading to possibly invalid
entries in the re_gets::charjump table.
The net result was that for example "sed s/@CC@/foo/" failed to work
correctly, leading to trouble with many configure scripts.
Diffstat (limited to 'contrib/llvm/lib/Transforms/Scalar')
0 files changed, 0 insertions, 0 deletions
