vendor/llvm/llvm-r72732

1 files changed, 30 insertions, 0 deletions

diff --git a/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll b/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll
new file mode 100644
index 0000000000000..b8e30198e3712
--- /dev/null
+++ b/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | opt -aa-eval -disable-output |& grep {2 no alias respon}
+; TEST that A[1][0] may alias A[0][i].
+
+define void @test(i32 %N) {
+entry:
+	%X = alloca [3 x [3 x i32]]		; <[3 x [3 x i32]]*> [#uses=4]
+	%tmp.24 = icmp sgt i32 %N, 0		; <i1> [#uses=1]
+	br i1 %tmp.24, label %no_exit, label %loopexit
+
+no_exit:		; preds = %no_exit, %entry
+	%i.0.0 = phi i32 [ 0, %entry ], [ %inc, %no_exit ]		; <i32> [#uses=2]
+	%tmp.6 = getelementptr [3 x [3 x i32]]* %X, i32 0, i32 0, i32 %i.0.0		; <i32*> [#uses=1]
+	store i32 1, i32* %tmp.6
+	%tmp.8 = getelementptr [3 x [3 x i32]]* %X, i32 0, i32 0, i32 0		; <i32*> [#uses=1]
+	%tmp.9 = load i32* %tmp.8		; <i32> [#uses=1]
+	%tmp.11 = getelementptr [3 x [3 x i32]]* %X, i32 0, i32 1, i32 0		; <i32*> [#uses=1]
+	%tmp.12 = load i32* %tmp.11		; <i32> [#uses=1]
+	%tmp.13 = add i32 %tmp.12, %tmp.9		; <i32> [#uses=1]
+	%inc = add i32 %i.0.0, 1		; <i32> [#uses=2]
+	%tmp.2 = icmp slt i32 %inc, %N		; <i1> [#uses=1]
+	br i1 %tmp.2, label %no_exit, label %loopexit
+
+loopexit:		; preds = %no_exit, %entry
+	%Y.0.1 = phi i32 [ 0, %entry ], [ %tmp.13, %no_exit ]		; <i32> [#uses=1]
+	%tmp.4 = getelementptr [3 x [3 x i32]]* %X, i32 0, i32 0		; <[3 x i32]*> [#uses=1]
+	%tmp.15 = call i32 (...)* @foo( [3 x i32]* %tmp.4, i32 %Y.0.1 )		; <i32> [#uses=0]
+	ret void
+}
+
+declare i32 @foo(...)