new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26514 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll b/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll
new file mode 100644 (file)
index 0000000..767df34
--- /dev/null
+++ b/test/Analysis/BasicAA/2006-03-03-BadArraySubscript.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | opt -aa-eval -disable-output 2>&1 | grep '2 no alias respon'
+
+;; TEST that A[1][0] may alias A[0][i].
+
+void %test(int %N) {
+entry:
+       %X = alloca [3 x [3 x int]]             ; <[3 x [3 x int]]*> [#uses=4]
+       %tmp.24 = setgt int %N, 0               ; <bool> [#uses=1]
+       br bool %tmp.24, label %no_exit, label %loopexit
+
+no_exit:               ; preds = %no_exit, %entry
+       %i.0.0 = phi int [ 0, %entry ], [ %inc, %no_exit ]              ; <int> [#uses=2]
+       %tmp.6 = getelementptr [3 x [3 x int]]* %X, int 0, int 0, int %i.0.0            ; <int*> [#uses=1]
+       store int 1, int* %tmp.6
+       %tmp.8 = getelementptr [3 x [3 x int]]* %X, int 0, int 0, int 0         ; <int*> [#uses=1]
+       %tmp.9 = load int* %tmp.8               ; <int> [#uses=1]
+       %tmp.11 = getelementptr [3 x [3 x int]]* %X, int 0, int 1, int 0                ; <int*> [#uses=1]
+       %tmp.12 = load int* %tmp.11             ; <int> [#uses=1]
+       %tmp.13 = add int %tmp.12, %tmp.9               ; <int> [#uses=1]
+       %inc = add int %i.0.0, 1                ; <int> [#uses=2]
+       %tmp.2 = setlt int %inc, %N             ; <bool> [#uses=1]
+       br bool %tmp.2, label %no_exit, label %loopexit
+
+loopexit:              ; preds = %no_exit, %entry
+       %Y.0.1 = phi int [ 0, %entry ], [ %tmp.13, %no_exit ]           ; <int> [#uses=1]
+       %tmp.4 = getelementptr [3 x [3 x int]]* %X, int 0, int 0                ; <[3 x int]*> [#uses=1]
+       %tmp.15 = call int (...)* %foo( [3 x int]* %tmp.4, int %Y.0.1 )         ; <int> [#uses=0]
+       ret void
+}
+
+declare int %foo(...)