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-rw-r--r--test/Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll75
1 files changed, 75 insertions, 0 deletions
diff --git a/test/Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll b/test/Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll
new file mode 100644
index 0000000..7e90079
--- /dev/null
+++ b/test/Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll
@@ -0,0 +1,75 @@
+; RUN: llvm-as < %s | opt -loop-extract -disable-output
+
+void %solve() {
+entry:
+ br label %loopentry.0
+
+loopentry.0: ; preds = %entry, %endif.0
+ br bool false, label %no_exit.0, label %loopexit.0
+
+no_exit.0: ; preds = %loopentry.0
+ br bool false, label %then.0, label %endif.0
+
+then.0: ; preds = %no_exit.0
+ br bool false, label %shortcirc_done, label %shortcirc_next
+
+shortcirc_next: ; preds = %then.0
+ br label %shortcirc_done
+
+shortcirc_done: ; preds = %then.0, %shortcirc_next
+ br bool false, label %then.1, label %endif.1
+
+then.1: ; preds = %shortcirc_done
+ br bool false, label %cond_true, label %cond_false
+
+cond_true: ; preds = %then.1
+ br label %cond_continue
+
+cond_false: ; preds = %then.1
+ br label %cond_continue
+
+cond_continue: ; preds = %cond_true, %cond_false
+ br label %return
+
+after_ret.0: ; No predecessors!
+ br label %endif.1
+
+endif.1: ; preds = %shortcirc_done, %after_ret.0
+ br label %endif.0
+
+endif.0: ; preds = %no_exit.0, %endif.1
+ br label %loopentry.0
+
+loopexit.0: ; preds = %loopentry.0
+ br bool false, label %then.2, label %endif.2
+
+then.2: ; preds = %loopexit.0
+ br bool false, label %then.3, label %endif.3
+
+then.3: ; preds = %then.2
+ br label %return
+
+after_ret.1: ; No predecessors!
+ br label %endif.3
+
+endif.3: ; preds = %then.2, %after_ret.1
+ br label %endif.2
+
+endif.2: ; preds = %loopexit.0, %endif.3
+ br label %loopentry.1
+
+loopentry.1: ; preds = %endif.2, %no_exit.1
+ br bool false, label %no_exit.1, label %loopexit.1
+
+no_exit.1: ; preds = %loopentry.1
+ br label %loopentry.1
+
+loopexit.1: ; preds = %loopentry.1
+ br label %return
+
+after_ret.2: ; No predecessors!
+ br label %return
+
+return: ; preds = %cond_continue, %then.3, %loopexit.1, %after_ret.2
+ ret void
+}