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Avoid dropping the address space when InstCombine optimizes memset

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122215 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang 2010-12-20 01:05:30 +00:00
parent d8ff7eca8c
commit 55fb9b0fcf
1 changed files with 3 additions and 1 deletions
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4
lib/Transforms/InstCombine/InstCombineCalls.cpp
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@ -234,7 +234,9 @@ Instruction *InstCombiner::SimplifyMemSet(MemSetInst *MI) {
const Type *ITy = IntegerType::get(MI->getContext(), Len*8); // n=1 -> i8.
Value *Dest = MI->getDest();
Dest = Builder->CreateBitCast(Dest, PointerType::getUnqual(ITy));
unsigned DstAddrSp = cast<PointerType>(Dest->getType())->getAddressSpace();
Type *NewDstPtrTy = PointerType::get(ITy, DstAddrSp);
Dest = Builder->CreateBitCast(Dest, NewDstPtrTy);
// Alignment 0 is identity for alignment 1 for memset, but not store.
if (Alignment == 0) Alignment = 1;