diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 65753e53446..6267eb9fea8 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -2928,9 +2928,7 @@ void SelectionDAGLowering::visitLoad(LoadInst &I) { void SelectionDAGLowering::visitStore(StoreInst &I) { Value *SrcV = I.getOperand(0); - SDValue Src = getValue(SrcV); Value *PtrV = I.getOperand(1); - SDValue Ptr = getValue(PtrV); SmallVector ValueVTs; SmallVector Offsets; @@ -2939,6 +2937,12 @@ void SelectionDAGLowering::visitStore(StoreInst &I) { if (NumValues == 0) return; + // Get the lowered operands. Note that we do this after + // checking if NumResults is zero, because with zero results + // the operands won't have values in the map. + SDValue Src = getValue(SrcV); + SDValue Ptr = getValue(PtrV); + SDValue Root = getRoot(); SmallVector Chains(NumValues); MVT PtrVT = Ptr.getValueType(); diff --git a/test/CodeGen/Generic/empty-load-store.ll b/test/CodeGen/Generic/empty-load-store.ll new file mode 100644 index 00000000000..d7bb37194e4 --- /dev/null +++ b/test/CodeGen/Generic/empty-load-store.ll @@ -0,0 +1,18 @@ +; RUN: llvm-as < %s | llc +; PR2612 + +@current_foo = internal global { } zeroinitializer + +define i32 @foo() { +entry: + %retval = alloca i32 + store i32 0, i32* %retval + %local_foo = alloca { } + load { }* @current_foo + store { } %0, { }* %local_foo + br label %return + +return: + load i32* %retval + ret i32 %1 +}