diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Transforms/Scalar/MemCpyOptimizer.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp index 348e12f35b..143ba38ec9 100644 --- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -75,6 +75,13 @@ static bool IsPointerOffset(Value *Ptr1, Value *Ptr2, int64_t &Offset, const DataLayout &TD) { Ptr1 = Ptr1->stripPointerCasts(); Ptr2 = Ptr2->stripPointerCasts(); + + // Handle the trivial case first. + if (Ptr1 == Ptr2) { + Offset = 0; + return true; + } + GEPOperator *GEP1 = dyn_cast<GEPOperator>(Ptr1); GEPOperator *GEP2 = dyn_cast<GEPOperator>(Ptr2); |