Add a test for the LCSSA issue I just fixed.

llvm-svn: 29077

1 files changed, 31 insertions, 0 deletions

diff --git a/llvm/test/Regression/Transforms/LCSSA/2006-07-09-NoDominator.ll b/llvm/test/Regression/Transforms/LCSSA/2006-07-09-NoDominator.ll
new file mode 100644
index 00000000000..54211390ee3
--- /dev/null
+++ b/llvm/test/Regression/Transforms/LCSSA/2006-07-09-NoDominator.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | opt -lcssa
+
+	%struct.SetJmpMapEntry = type { sbyte*, uint, %struct.SetJmpMapEntry* }
+
+implementation   ; Functions:
+
+void %__llvm_sjljeh_try_catching_longjmp_exception() {
+entry:
+	br label %loopentry
+
+loopentry:		; preds = %endif, %entry
+	%SJE.0 = phi %struct.SetJmpMapEntry* [ null, %entry ], [ %tmp.25, %endif ]		; <%struct.SetJmpMapEntry*> [#uses=1]
+	br bool false, label %no_exit, label %loopexit
+
+no_exit:		; preds = %loopentry
+	br bool false, label %then, label %endif
+
+then:		; preds = %no_exit
+	%tmp.21 = getelementptr %struct.SetJmpMapEntry* %SJE.0, int 0, uint 1		; <uint*> [#uses=0]
+	br label %return
+
+endif:		; preds = %after_ret.0, %no_exit
+	%tmp.25 = load %struct.SetJmpMapEntry** null		; <%struct.SetJmpMapEntry*> [#uses=1]
+	br label %loopentry
+
+loopexit:		; preds = %loopentry
+	br label %return
+
+return:		; preds = %after_ret.1, %loopexit, %then
+	ret void
+}