Testcase for PR1011

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31877 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 44 insertions, 0 deletions

diff --git a/test/CodeGen/Generic/2006-11-20-DAGCombineCrash.ll b/test/CodeGen/Generic/2006-11-20-DAGCombineCrash.ll
new file mode 100644
index 0000000000..93b58575dc
--- /dev/null
+++ b/test/CodeGen/Generic/2006-11-20-DAGCombineCrash.ll
@@ -0,0 +1,44 @@
+; RUN: llvm-as < %s | llc
+; PR1011
+
+	%struct.mng_data = type { sbyte* (%struct.mng_data*, uint)*, int, int, int, sbyte, sbyte, int, int, int, int, int }
+
+implementation   ; Functions:
+
+void %mng_display_bgr565() {
+entry:
+	br bool false, label %bb.preheader, label %return
+
+bb.preheader:		; preds = %entry
+	br bool false, label %cond_true48, label %cond_next80
+
+cond_true48:		; preds = %bb.preheader
+	%tmp = load ubyte* null		; <ubyte> [#uses=1]
+	%tmp51 = cast ubyte %tmp to ushort		; <ushort> [#uses=1]
+	%tmp99 = load sbyte* null		; <sbyte> [#uses=1]
+	%tmp54 = cast sbyte %tmp99 to ubyte		; <ubyte> [#uses=1]
+	%tmp54 = cast ubyte %tmp54 to int		; <int> [#uses=1]
+	%tmp55 = lshr int %tmp54, ubyte 3		; <int> [#uses=1]
+	%tmp55 = cast int %tmp55 to ushort		; <ushort> [#uses=1]
+	%tmp52 = shl ushort %tmp51, ubyte 5		; <ushort> [#uses=1]
+	%tmp56 = and ushort %tmp55, 28		; <ushort> [#uses=1]
+	%tmp57 = or ushort %tmp56, %tmp52		; <ushort> [#uses=1]
+	%tmp60 = cast ushort %tmp57 to uint		; <uint> [#uses=1]
+	%tmp62 = xor uint 0, 65535		; <uint> [#uses=1]
+	%tmp63 = mul uint %tmp60, %tmp62		; <uint> [#uses=1]
+	%tmp65 = add uint 0, %tmp63		; <uint> [#uses=1]
+	%tmp69 = add uint 0, %tmp65		; <uint> [#uses=1]
+	%tmp70 = lshr uint %tmp69, ubyte 16		; <uint> [#uses=1]
+	%tmp70 = cast uint %tmp70 to ushort		; <ushort> [#uses=1]
+	%tmp75 = lshr ushort %tmp70, ubyte 8		; <ushort> [#uses=1]
+	%tmp75 = cast ushort %tmp75 to ubyte		; <ubyte> [#uses=1]
+	%tmp76 = lshr ubyte %tmp75, ubyte 5		; <ubyte> [#uses=1]
+	store ubyte %tmp76, ubyte* null
+	ret void
+
+cond_next80:		; preds = %bb.preheader
+	ret void
+
+return:		; preds = %entry
+	ret void
+}