New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6890 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 94 insertions, 0 deletions

diff --git a/test/Transforms/ADCE/2003-06-24-BadSuccessor.ll b/test/Transforms/ADCE/2003-06-24-BadSuccessor.ll
new file mode 100644
index 0000000000..fb851e688b
--- /dev/null
+++ b/test/Transforms/ADCE/2003-06-24-BadSuccessor.ll
@@ -0,0 +1,94 @@
+; RUN: as < %s | opt -adce -disable-output
+
+target endian = little
+target pointersize = 32
+	%struct..CppObjTypeDesc = type { uint, ushort, ushort }
+	%struct..TypeToken = type { uint, ushort, ushort }
+
+implementation   ; Functions:
+
+uint %C_ReFaxToDb() {
+entry:		; No predecessors!
+	br bool false, label %endif.0, label %then.0
+
+then.0:		; preds = %entry
+	ret uint 0
+
+endif.0:		; preds = %entry
+	br bool false, label %then.11, label %then.4
+
+then.4:		; preds = %endif.0
+	ret uint 0
+
+then.11:		; preds = %endif.0
+	br bool false, label %loopentry.0, label %else.2
+
+loopentry.0:		; preds = %then.11, %endif.14, %loopentry.1
+	br bool false, label %endif.14, label %loopexit.0
+
+endif.14:		; preds = %loopentry.0
+	br bool false, label %loopentry.1, label %loopentry.0
+
+loopentry.1:		; preds = %endif.14, %then.53, %then.53, %then.53, %then.53, %then.53
+	%SubArrays.10 = phi uint* [ %SubArrays.8, %then.53 ] , [ null, %endif.14 ]		; <uint*> [#uses=3]
+	br bool false, label %no_exit.1, label %loopentry.0
+
+no_exit.1:		; preds = %loopentry.1
+	switch uint 0, label %label.17 [
+		 uint 2, label %label.11
+		 uint 19, label %label.10
+	]
+
+label.10:		; preds = %no_exit.1
+	br bool false, label %then.43, label %endif.43
+
+then.43:		; preds = %label.10
+	br bool false, label %then.44, label %endif.44
+
+then.44:		; preds = %then.43
+	br bool false, label %shortcirc_next.4, label %endif.45
+
+shortcirc_next.4:		; preds = %then.44
+	br bool false, label %no_exit.2, label %loopexit.2
+
+no_exit.2:		; preds = %shortcirc_next.4
+	%tmp.897 = getelementptr uint* %SubArrays.10, long 0		; <uint*> [#uses=1]
+	%tmp.899 = load uint* %tmp.897		; <uint> [#uses=1]
+	store uint %tmp.899, uint* null
+	ret uint 0
+
+loopexit.2:		; preds = %shortcirc_next.4
+	ret uint 0
+
+endif.45:		; preds = %then.44
+	ret uint 0
+
+endif.44:		; preds = %then.43
+	ret uint 0
+
+endif.43:		; preds = %label.10
+	ret uint 0
+
+label.11:		; preds = %no_exit.1
+	ret uint 0
+
+label.17:		; preds = %no_exit.1, %no_exit.1, %no_exit.1, %no_exit.1, %no_exit.1, %no_exit.1
+	br bool false, label %then.53, label %shortcirc_next.7
+
+shortcirc_next.7:		; preds = %label.17
+	br bool false, label %then.53, label %shortcirc_next.8
+
+shortcirc_next.8:		; preds = %shortcirc_next.7
+	ret uint 0
+
+then.53:		; preds = %shortcirc_next.7, %label.17
+	%SubArrays.8 = phi uint* [ %SubArrays.10, %shortcirc_next.7 ], [ %SubArrays.10, %label.17 ]		; <uint*> [#uses=5]
+	%tmp.1023 = load uint* null		; <uint> [#uses=1]
+	switch uint %tmp.1023, label %loopentry.1 []
+
+loopexit.0:		; preds = %loopentry.0
+	ret uint 0
+
+else.2:		; preds = %then.11
+	ret uint 0
+}