new testcase, distilled from povray

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28778 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 44 insertions, 0 deletions

diff --git a/test/Transforms/LoopUnswitch/2006-06-13-SingleEntryPHI.ll b/test/Transforms/LoopUnswitch/2006-06-13-SingleEntryPHI.ll
new file mode 100644
index 0000000000..6523f65da9
--- /dev/null
+++ b/test/Transforms/LoopUnswitch/2006-06-13-SingleEntryPHI.ll
@@ -0,0 +1,44 @@
+; RUN: llvm-as < %s | opt -loop-unswitch -disable-output
+
+	%struct.BLEND_MAP = type { short, short, short, int, %struct.BLEND_MAP_ENTRY* }
+	%struct.BLEND_MAP_ENTRY = type { float, ubyte, { [5 x float], [4 x ubyte] } }
+	%struct.TPATTERN = type { ushort, ushort, ushort, int, float, float, float, %struct.WARP*, %struct.TPATTERN*, %struct.BLEND_MAP*, { %struct.anon, [4 x ubyte] } }
+	%struct.TURB = type { ushort, %struct.WARP*, [3 x double], int, float, float }
+	%struct.WARP = type { ushort, %struct.WARP* }
+	%struct.anon = type { float, [3 x double] }
+
+implementation   ; Functions:
+
+void %Parse_Pattern() {
+entry:
+	br label %bb1096.outer20
+
+bb671:		; preds = %cond_true1099
+	br label %bb1096.outer23
+
+bb1096.outer20.loopexit:		; preds = %cond_true1099
+	%Local_Turb.0.ph24.lcssa = phi %struct.TURB* [ %Local_Turb.0.ph24, %cond_true1099 ]		; <%struct.TURB*> [#uses=1]
+	br label %bb1096.outer20
+
+bb1096.outer20:		; preds = %bb1096.outer20.loopexit, %entry
+	%Local_Turb.0.ph22 = phi %struct.TURB* [ undef, %entry ], [ %Local_Turb.0.ph24.lcssa, %bb1096.outer20.loopexit ]		; <%struct.TURB*> [#uses=1]
+	%tmp1098 = seteq int 0, 0		; <bool> [#uses=1]
+	br label %bb1096.outer23
+
+bb1096.outer23:		; preds = %bb1096.outer20, %bb671
+	%Local_Turb.0.ph24 = phi %struct.TURB* [ %Local_Turb.0.ph22, %bb1096.outer20 ], [ null, %bb671 ]		; <%struct.TURB*> [#uses=2]
+	br label %bb1096
+
+bb1096:		; preds = %cond_true1099, %bb1096.outer23
+	br bool %tmp1098, label %cond_true1099, label %bb1102
+
+cond_true1099:		; preds = %bb1096
+	switch int 0, label %bb1096.outer20.loopexit [
+		 int 161, label %bb671
+		 int 359, label %bb1096
+	]
+
+bb1102:		; preds = %bb1096
+	%Local_Turb.0.ph24.lcssa1 = phi %struct.TURB* [ %Local_Turb.0.ph24, %bb1096 ]		; <%struct.TURB*> [#uses=0]
+	ret void
+}