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authorChris Lattner <sabre@nondot.org>2011-01-10 02:34:11 +0000
committerChris Lattner <sabre@nondot.org>2011-01-10 02:34:11 +0000
commitf4afaa81f2d1736a4115a22c96d8188178f11cfc (patch)
tree32f0910585adf0037fd94bfff5eeb812fb44f0c2
parentf86c75da4d9cb4547f9a35dc4b174ffbb819dce4 (diff)
another random stab in the dark trying to fix llvm-gcc-i386-linux-selfhost
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123149 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Transforms/Scalar/MemCpyOptimizer.cpp6
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