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author | Nadav Rotem <nrotem@apple.com> | 2013-04-23 17:12:42 +0000 |
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committer | Nadav Rotem <nrotem@apple.com> | 2013-04-23 17:12:42 +0000 |
commit | a7d9a6ee63bec70fecea79b85a30108ed3e8fabd (patch) | |
tree | 29d83f77b12af220401f880a583be82a0623fc84 /lib/Transforms/Vectorize/LoopVectorize.cpp | |
parent | 3d7b39e7d4d3cef9f859f5965fbf959e251ee3ee (diff) | |
download | external_llvm-a7d9a6ee63bec70fecea79b85a30108ed3e8fabd.zip external_llvm-a7d9a6ee63bec70fecea79b85a30108ed3e8fabd.tar.gz external_llvm-a7d9a6ee63bec70fecea79b85a30108ed3e8fabd.tar.bz2 |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180121 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Vectorize/LoopVectorize.cpp')
-rw-r--r-- | lib/Transforms/Vectorize/LoopVectorize.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp index 162587c..0988a40 100644 --- a/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -1085,10 +1085,10 @@ void InnerLoopVectorizer::scalarizeInstruction(Instruction *Instr) { // Create a new entry in the WidenMap and initialize it to Undef or Null. VectorParts &VecResults = WidenMap.splat(Instr, UndefVec); - // For each scalar that we create: - for (unsigned Width = 0; Width < VF; ++Width) { - // For each vector unroll 'part': - for (unsigned Part = 0; Part < UF; ++Part) { + // For each vector unroll 'part': + for (unsigned Part = 0; Part < UF; ++Part) { + // For each scalar that we create: + for (unsigned Width = 0; Width < VF; ++Width) { Instruction *Cloned = Instr->clone(); if (!IsVoidRetTy) Cloned->setName(Instr->getName() + ".cloned"); |