Testcase for PR1011

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

diff --git a/test/CodeGen/Generic/2006-11-20-DAGCombineCrash.ll b/test/CodeGen/Generic/2006-11-20-DAGCombineCrash.ll
new file mode 100644 (file)
index 0000000..93b5857
--- /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
+}