diff options
Diffstat (limited to 'lib/Transforms/Scalar/MemCpyOptimizer.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/MemCpyOptimizer.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp index 3327b760a46..6de5ef1d770 100644 --- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -71,13 +71,14 @@ static int64_t GetOffsetFromIndex(const GetElementPtrInst *GEP, unsigned Idx, /// be &A[42], and Ptr2 might be &A[40]. In this case offset would be -8. static bool IsPointerOffset(Value *Ptr1, Value *Ptr2, int64_t &Offset, const TargetData &TD) { - Ptr1 = Ptr1->stripPointerCasts(); - Ptr2 = Ptr2->stripPointerCasts(); + //Ptr1 = Ptr1->stripPointerCasts(); + //Ptr2 = Ptr2->stripPointerCasts(); GetElementPtrInst *GEP1 = dyn_cast<GetElementPtrInst>(Ptr1); GetElementPtrInst *GEP2 = dyn_cast<GetElementPtrInst>(Ptr2); bool VariableIdxFound = false; +#if 0 // If one pointer is a GEP and the other isn't, then see if the GEP is a // constant offset from the base, as in "P" and "gep P, 1". if (GEP1 && GEP2 == 0 && GEP1->getOperand(0)->stripPointerCasts() == Ptr2) { @@ -89,6 +90,7 @@ static bool IsPointerOffset(Value *Ptr1, Value *Ptr2, int64_t &Offset, Offset = GetOffsetFromIndex(GEP2, 1, VariableIdxFound, TD); return !VariableIdxFound; } +#endif // Right now we handle the case when Ptr1/Ptr2 are both GEPs with an identical // base. After that base, they may have some number of common (and |