1 files changed, 31 insertions, 0 deletions
diff --git a/test/Transforms/ScalarRepl/load-store-aggregate.ll b/test/Transforms/ScalarRepl/load-store-aggregate.ll
new file mode 100644
index 0000000..c5008ac
--- /dev/null
+++ b/test/Transforms/ScalarRepl/load-store-aggregate.ll
@@ -0,0 +1,31 @@
+; 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).
+target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
+
+; RUN: opt < %s -scalarrepl -S > %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		; <i32*> [#uses=1]
+	%tmp5 = load i32* %tmp4		; <i32> [#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
+}