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-rw-r--r--lib/Analysis/BasicAliasAnalysis.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 69a1c0c772..32a17264d5 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -386,8 +386,8 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
// The GEP index scale ("Scale") scales C1*V+C2, yielding (C1*V+C2)*Scale.
// This gives us an aggregate computation of (C1*Scale)*V + C2*Scale.
- BaseOffs += IndexOffset.getZExtValue()*Scale;
- Scale *= IndexScale.getZExtValue();
+ BaseOffs += IndexOffset.getSExtValue()*Scale;
+ Scale *= IndexScale.getSExtValue();
// If we already had an occurrance of this index variable, merge this
@@ -407,7 +407,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
// pointer size.
if (unsigned ShiftBits = 64-TD->getPointerSizeInBits()) {
Scale <<= ShiftBits;
- Scale >>= ShiftBits;
+ Scale = (int64_t)Scale >> ShiftBits;
}
if (Scale) {