1 files changed, 58 insertions, 0 deletions
diff --git a/test/Transforms/ScalarRepl/copy-aggregate.ll b/test/Transforms/ScalarRepl/copy-aggregate.ll
new file mode 100644
index 0000000..2992413
--- /dev/null
+++ b/test/Transforms/ScalarRepl/copy-aggregate.ll
@@ -0,0 +1,58 @@
+; RUN: opt < %s -scalarrepl -S | not grep alloca
+; PR3290
+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"
+
+;; Store of integer to whole alloca struct.
+define i32 @test1(i64 %V) nounwind {
+	%X = alloca {{i32, i32}}
+	%Y = bitcast {{i32,i32}}* %X to i64*
+	store i64 %V, i64* %Y
+
+	%A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
+	%B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
+	%a = load i32* %A
+	%b = load i32* %B
+	%c = add i32 %a, %b
+	ret i32 %c
+}
+
+;; Store of integer to whole struct/array alloca.
+define float @test2(i128 %V) nounwind {
+	%X = alloca {[4 x float]}
+	%Y = bitcast {[4 x float]}* %X to i128*
+	store i128 %V, i128* %Y
+
+	%A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
+	%B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
+	%a = load float* %A
+	%b = load float* %B
+	%c = fadd float %a, %b
+	ret float %c
+}
+
+;; Load of whole alloca struct as integer
+define i64 @test3(i32 %a, i32 %b) nounwind {
+	%X = alloca {{i32, i32}}
+
+	%A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
+	%B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
+        store i32 %a, i32* %A
+        store i32 %b, i32* %B
+
+	%Y = bitcast {{i32,i32}}* %X to i64*
+        %Z = load i64* %Y
+	ret i64 %Z
+}
+
+;; load of integer from whole struct/array alloca.
+define i128 @test4(float %a, float %b) nounwind {
+	%X = alloca {[4 x float]}
+	%A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
+	%B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
+	store float %a, float* %A
+	store float %b, float* %B
+        
+      	%Y = bitcast {[4 x float]}* %X to i128*
+	%V = load i128* %Y
+	ret i128 %V
+}