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| author | Chad Rosier <mcrosier@codeaurora.org> | 2014-09-30 03:17:42 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@codeaurora.org> | 2014-09-30 03:17:42 +0000 |
| commit | aab5d7bd33ef6047c0037c5e0f01029c35924bf1 (patch) | |
| tree | 44d6ae0df93c7ad01c79e2e0bafcc770e173dead /llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | |
| parent | aaf8e03d92f9f65e3b5bd6fd9f3be59fb87f8fdd (diff) | |
| download | bcm5719-llvm-aab5d7bd33ef6047c0037c5e0f01029c35924bf1.tar.gz bcm5719-llvm-aab5d7bd33ef6047c0037c5e0f01029c35924bf1.zip | |
[IndVarSimplify] Widen loop unsigned compares.
This patch extends r217953 to handle unsigned comparison.
Phabricator revision: http://reviews.llvm.org/D5526
llvm-svn: 218659
Diffstat (limited to 'llvm/lib/Transforms/Scalar/IndVarSimplify.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index 68a134ebfd8..2959c7bd3c7 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -936,12 +936,8 @@ bool WidenIV::WidenLoopCompare(NarrowIVDefUse DU) { if (!Cmp) return false; - // Must be a signed compare. - if (!CmpInst::isSigned(Cmp->getPredicate())) - return false; - - // Must be a signed IV user. - if (!IsSigned) + // Sign of IV user and compare must match. + if (IsSigned != CmpInst::isSigned(Cmp->getPredicate())) return false; Value *Op = Cmp->getOperand(Cmp->getOperand(0) == DU.NarrowDef ? 1 : 0); |
