diff options
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp | 7 | ||||
| -rw-r--r-- | llvm/test/Transforms/InstCombine/load-addrspace-cast.ll | 12 |
2 files changed, 19 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp index 1db55fea008..a34acdd8320 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp @@ -335,6 +335,13 @@ static Instruction *InstCombineLoadCast(InstCombiner &IC, LoadInst &LI, NewLoad->setAlignment(LI.getAlignment()); NewLoad->setAtomic(LI.getOrdering(), LI.getSynchScope()); // Now cast the result of the load. + PointerType *OldTy = dyn_cast<PointerType>(NewLoad->getType()); + PointerType *NewTy = dyn_cast<PointerType>(LI.getType()); + if (OldTy && NewTy && + OldTy->getAddressSpace() != NewTy->getAddressSpace()) { + return new AddrSpaceCastInst(NewLoad, LI.getType()); + } + return new BitCastInst(NewLoad, LI.getType()); } } diff --git a/llvm/test/Transforms/InstCombine/load-addrspace-cast.ll b/llvm/test/Transforms/InstCombine/load-addrspace-cast.ll new file mode 100644 index 00000000000..fd6339cc926 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/load-addrspace-cast.ll @@ -0,0 +1,12 @@ +; RUN: opt -instcombine -S < %s | FileCheck %s +target datalayout = "e-p:64:64:64-n8:16:32:64" + +define i32* @pointer_to_addrspace_pointer(i32 addrspace(1)** %x) nounwind { +; CHECK-LABEL: @pointer_to_addrspace_pointer( +; CHECK: load +; CHECK: addrspacecast + %y = bitcast i32 addrspace(1)** %x to i32** + %z = load i32** %y + ret i32* %z +} + |
