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Add a comment.
author
Dan Gohman
<gohman@apple.com>
Mon, 24 Jan 2011 17:54:18 +0000
(17:54 +0000)
committer
Dan Gohman
<gohman@apple.com>
Mon, 24 Jan 2011 17:54:18 +0000
(17:54 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124126
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Analysis/ScalarEvolution.cpp
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diff --git
a/lib/Analysis/ScalarEvolution.cpp
b/lib/Analysis/ScalarEvolution.cpp
index e3fcb8428e8252001b9a91b974b341f552f2d1cb..c10af50dd597dd7ac958caf28e7adcf72dae3cd4 100644
(file)
--- a/
lib/Analysis/ScalarEvolution.cpp
+++ b/
lib/Analysis/ScalarEvolution.cpp
@@
-3126,6
+3126,7
@@
ScalarEvolution::getUnsignedRange(const SCEV *S) {
///
ConstantRange
ScalarEvolution::getSignedRange(const SCEV *S) {
+ // See if we've computed this range already.
DenseMap<const SCEV *, ConstantRange>::iterator I = SignedRanges.find(S);
if (I != SignedRanges.end())
return I->second;