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authorDan Gohman <gohman@apple.com>2011-01-24 17:54:18 +0000
committerDan Gohman <gohman@apple.com>2011-01-24 17:54:18 +0000
commit3ac8cd614f5c5accb346d584e167c1ea99c069ae (patch)
tree765e3f9b2fe953565116ec25b40802433068b3c0 /llvm/lib/Analysis/ScalarEvolution.cpp
parent4deda530c289807aa0b911b5d3b7e9ae5c056831 (diff)
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llvm-svn: 124126
Diffstat (limited to 'llvm/lib/Analysis/ScalarEvolution.cpp')
-rw-r--r--llvm/lib/Analysis/ScalarEvolution.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index e3fcb8428e8..c10af50dd59 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/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;
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