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-rw-r--r--test/Transforms/ScalarRepl/union-pointer.ll41
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/ScalarRepl/union-pointer.ll b/test/Transforms/ScalarRepl/union-pointer.ll
new file mode 100644
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--- /dev/null
+++ b/test/Transforms/ScalarRepl/union-pointer.ll
@@ -0,0 +1,41 @@
+; PR892
+; RUN: opt < %s -scalarrepl -S | \
+; RUN: not grep alloca
+; RUN: opt < %s -scalarrepl -S | grep {ret i8}
+
+target datalayout = "e-p:32:32"
+target triple = "i686-apple-darwin8.7.2"
+ %struct.Val = type { i32*, i32 }
+
+define i8* @test(i16* %X) {
+ %X_addr = alloca i16* ; <i16**> [#uses=2]
+ store i16* %X, i16** %X_addr
+ %X_addr.upgrd.1 = bitcast i16** %X_addr to i8** ; <i8**> [#uses=1]
+ %tmp = load i8** %X_addr.upgrd.1 ; <i8*> [#uses=1]
+ ret i8* %tmp
+}
+
+define void @test2(i64 %Op.0) {
+ %tmp = alloca %struct.Val, align 8 ; <%struct.Val*> [#uses=3]
+ %tmp1 = alloca %struct.Val, align 8 ; <%struct.Val*> [#uses=3]
+ %tmp.upgrd.2 = call i64 @_Z3foov( ) ; <i64> [#uses=1]
+ %tmp1.upgrd.3 = bitcast %struct.Val* %tmp1 to i64* ; <i64*> [#uses=1]
+ store i64 %tmp.upgrd.2, i64* %tmp1.upgrd.3
+ %tmp.upgrd.4 = getelementptr %struct.Val* %tmp, i32 0, i32 0 ; <i32**> [#uses=1]
+ %tmp2 = getelementptr %struct.Val* %tmp1, i32 0, i32 0 ; <i32**> [#uses=1]
+ %tmp.upgrd.5 = load i32** %tmp2 ; <i32*> [#uses=1]
+ store i32* %tmp.upgrd.5, i32** %tmp.upgrd.4
+ %tmp3 = getelementptr %struct.Val* %tmp, i32 0, i32 1 ; <i32*> [#uses=1]
+ %tmp4 = getelementptr %struct.Val* %tmp1, i32 0, i32 1 ; <i32*> [#uses=1]
+ %tmp.upgrd.6 = load i32* %tmp4 ; <i32> [#uses=1]
+ store i32 %tmp.upgrd.6, i32* %tmp3
+ %tmp7 = bitcast %struct.Val* %tmp to { i64 }* ; <{ i64 }*> [#uses=1]
+ %tmp8 = getelementptr { i64 }* %tmp7, i32 0, i32 0 ; <i64*> [#uses=1]
+ %tmp9 = load i64* %tmp8 ; <i64> [#uses=1]
+ call void @_Z3bar3ValS_( i64 %Op.0, i64 %tmp9 )
+ ret void
+}
+
+declare i64 @_Z3foov()
+
+declare void @_Z3bar3ValS_(i64, i64)