diff --git a/test/Transforms/ScalarRepl/load-store-aggregate.ll b/test/Transforms/ScalarRepl/load-store-aggregate.ll new file mode 100644 index 00000000000..df13db739f5 --- /dev/null +++ b/test/Transforms/ScalarRepl/load-store-aggregate.ll @@ -0,0 +1,30 @@ +; This testcase shows that scalarrepl is able to replace struct alloca's which +; are directly loaded from or stored to (using the first class aggregates +; feature). + +; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis > %t +; RUN: cat %t | not grep alloca + +%struct.foo = type { i32, i32 } + +define i32 @test(%struct.foo* %P) { +entry: + %L = alloca %struct.foo, align 8 ; <%struct.foo*> [#uses=2] + %V = load %struct.foo* %P + store %struct.foo %V, %struct.foo* %L + + %tmp4 = getelementptr %struct.foo* %L, i32 0, i32 0 ; [#uses=1] + %tmp5 = load i32* %tmp4 ; [#uses=1] + ret i32 %tmp5 +} + +define %struct.foo @test2(i32 %A, i32 %B) { +entry: + %L = alloca %struct.foo, align 8 ; <%struct.foo*> [#uses=2] + %L.0 = getelementptr %struct.foo* %L, i32 0, i32 0 + store i32 %A, i32* %L.0 + %L.1 = getelementptr %struct.foo* %L, i32 0, i32 1 + store i32 %B, i32* %L.1 + %V = load %struct.foo* %L + ret %struct.foo %V +}