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-rw-r--r--test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll40
1 files changed, 40 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll b/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll
new file mode 100644
index 0000000..fafe73b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll
@@ -0,0 +1,40 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define void @symhash_add() {
+entry:
+ br i1 undef, label %then.0, label %UnifiedReturnBlock
+then.0: ; preds = %entry
+ br i1 undef, label %loopentry.2, label %loopentry.1.preheader
+loopentry.1.preheader: ; preds = %then.0
+ br label %loopentry.1.outer
+loopentry.1.outer: ; preds = %loopexit.1, %loopentry.1.preheader
+ br label %loopentry.1
+loopentry.1: ; preds = %endif.1, %then.4, %then.3, %then.1, %loopentry.1.outer
+ br i1 undef, label %loopexit.1, label %no_exit.1
+no_exit.1: ; preds = %loopentry.1
+ br i1 undef, label %then.1, label %else.0
+then.1: ; preds = %no_exit.1
+ br label %loopentry.1
+else.0: ; preds = %no_exit.1
+ br i1 undef, label %then.2, label %else.1
+then.2: ; preds = %else.0
+ br i1 undef, label %then.3, label %endif.1
+then.3: ; preds = %then.2
+ br label %loopentry.1
+else.1: ; preds = %else.0
+ br i1 undef, label %endif.1, label %then.4
+then.4: ; preds = %else.1
+ br label %loopentry.1
+endif.1: ; preds = %else.1, %then.2
+ br label %loopentry.1
+loopexit.1: ; preds = %loopentry.1
+ br i1 undef, label %loopentry.1.outer, label %loopentry.2
+loopentry.2: ; preds = %no_exit.2, %loopexit.1, %then.0
+ br i1 undef, label %loopexit.2, label %no_exit.2
+no_exit.2: ; preds = %loopentry.2
+ br label %loopentry.2
+loopexit.2: ; preds = %loopentry.2
+ ret void
+UnifiedReturnBlock: ; preds = %entry
+ ret void
+}