commit 1991c47ec144e69bf3d6cb8f07ba03026e80b7b6
author Mon P Wang <wangmp@apple.com> Mon Dec 20 01:05:30 2010 +0000
committer Mon P Wang <wangmp@apple.com> Mon Dec 20 01:05:30 2010 +0000
tree a129141451a85fa92f268f05ff8dbafbc8e02e92
parent 9c26d2711b9c563f3ec90e97c0946e30cb896973

Avoid dropping the address space when InstCombine optimizes memset

llvm-svn: 122215

llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index d53f329..58c8f5f 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -234,7 +234,9 @@
     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;