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-rw-r--r--test/Transforms/SSI/2009-08-15-UnreachableBB.ll19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/SSI/2009-08-15-UnreachableBB.ll b/test/Transforms/SSI/2009-08-15-UnreachableBB.ll
new file mode 100644
index 000000000000..0fe37ec74098
--- /dev/null
+++ b/test/Transforms/SSI/2009-08-15-UnreachableBB.ll
@@ -0,0 +1,19 @@
+; RUN: opt < %s -ssi-everything -disable-output
+
+declare fastcc i32 @ras_Empty(i8** nocapture) nounwind readonly
+
+define i32 @cc_Tautology() nounwind {
+entry:
+ unreachable
+
+cc_InitData.exit: ; No predecessors!
+ %0 = call fastcc i32 @ras_Empty(i8** undef) nounwind ; <i32> [#uses=1]
+ %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
+ br i1 %1, label %bb2, label %bb6
+
+bb2: ; preds = %cc_InitData.exit
+ unreachable
+
+bb6: ; preds = %cc_InitData.exit
+ ret i32 undef
+}