From df5b3617cfe24135225e6052cc9d8603682b023e Mon Sep 17 00:00:00 2001 From: Nate Begeman Date: Mon, 31 Mar 2008 00:22:16 +0000 Subject: Don't eliminate bitcast instructions that change the type of a pointer git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48971 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/InstructionCombining.cpp | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib/Transforms') diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 35715fb..9e069fd 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -7575,6 +7575,11 @@ Instruction *InstCombiner::visitBitCast(BitCastInst &CI) { const Type *DstElTy = DstPTy->getElementType(); const Type *SrcElTy = SrcPTy->getElementType(); + // If the address spaces don't match, don't eliminate the bitcast, which is + // required for changing types. + if (SrcPTy->getAddressSpace() != DstPTy->getAddressSpace()) + return 0; + // If we are casting a malloc or alloca to a pointer to a type of the same // size, rewrite the allocation instruction to allocate the "right" type. if (AllocationInst *AI = dyn_cast(Src)) -- cgit v1.1