new testcase that crashes indvars

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28849 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/IndVarsSimplify/2006-06-16-Indvar-LCSSA-Crash.ll b/test/Transforms/IndVarsSimplify/2006-06-16-Indvar-LCSSA-Crash.ll
new file mode 100644 (file)
index 0000000..1f71c4e
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/2006-06-16-Indvar-LCSSA-Crash.ll
@@ -0,0 +1,21 @@
+; RUN: llvm-as < %s | opt -indvars -disable-output
+
+void %get_block() {
+endif.0:               ; preds = %entry
+       br label %no_exit.30
+
+no_exit.30:            ; preds = %no_exit.30, %endif.0
+       %x.12.0 = phi int [ %inc.28, %no_exit.30 ], [ -2, %endif.0 ]            ; <int> [#uses=1]
+       %tmp.583 = load ushort* null            ; <ushort> [#uses=1]
+       %tmp.584 = cast ushort %tmp.583 to int          ; <int> [#uses=1]
+       %tmp.588 = load int* null               ; <int> [#uses=1]
+       %tmp.589 = mul int %tmp.584, %tmp.588           ; <int> [#uses=1]
+       %tmp.591 = add int %tmp.589, 0          ; <int> [#uses=1]
+       %inc.28 = add int %x.12.0, 1            ; <int> [#uses=2]
+       %tmp.565 = setgt int %inc.28, 3         ; <bool> [#uses=1]
+       br bool %tmp.565, label %loopexit.30, label %no_exit.30
+
+loopexit.30:           ; preds = %no_exit.30
+       %tmp.591.lcssa = phi int [ %tmp.591, %no_exit.30 ]              ; <int> [#uses=0]
+       ret void
+}