diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp index c5e69cd0f99..f161d6710ab 100644 --- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -932,6 +932,17 @@ bool MemCpyOptPass::performCallSlotOptzn(Instruction *cpy, Value *cpyDest, if (MR != MRI_NoModRef) return false; + // We can't create address space casts here because we don't know if they're + // safe for the target. + if (cpySrc->getType()->getPointerAddressSpace() != + cpyDest->getType()->getPointerAddressSpace()) + return false; + for (unsigned i = 0; i < CS.arg_size(); ++i) + if (CS.getArgument(i)->stripPointerCasts() == cpySrc && + cpySrc->getType()->getPointerAddressSpace() != + CS.getArgument(i)->getType()->getPointerAddressSpace()) + return false; + // All the checks have passed, so do the transformation. bool changedArgument = false; for (unsigned i = 0; i < CS.arg_size(); ++i) |
