The inst combining of inttoptr into GEP with one index was using the bit size of
the type instead of the byte size. This was causing troublesome mis-compilations.
True to form, this took 2 days to find and is a one-line fix. :-P
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48354 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index ec51508..9b423a4 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -7416,7 +7416,7 @@
// is a single-index GEP.
if (X->getType() == CI.getType()) {
// Get the size of the pointee type.
- uint64_t Size = TD->getABITypeSizeInBits(DestPointee);
+ uint64_t Size = TD->getABITypeSize(DestPointee);
// Convert the constant to intptr type.
APInt Offset = Cst->getValue();