1 ; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -frame-pointer=all
3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
4 target triple = "i386-apple-macosx10.7"
6 ; This test case has a landing pad with two predecessors, and a variable that
7 ; is undef on the first edge while carrying the first function return value on
10 ; Live range splitting tries to isolate the block containing the first function
11 ; call, and it is important that the last split point is after the function call
12 ; so the return value can spill.
14 ; <rdar://problem/10664933>
16 @Exception = external unnamed_addr constant { i8*, i8* }
18 declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) nounwind
20 define void @f(i32* nocapture %arg, i32* nocapture %arg1, i32* nocapture %arg2, i32* nocapture %arg3, i32 %arg4, i32 %arg5) optsize ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
22 br i1 undef, label %bb6, label %bb7
25 %tmp = select i1 false, i32 0, i32 undef
28 bb7: ; preds = %bb6, %bb
29 %tmp8 = phi i32 [ %tmp, %bb6 ], [ 0, %bb ]
30 %tmp9 = shl i32 %tmp8, 2
31 %tmp10 = invoke noalias i8* @_Znam(i32 undef) optsize
32 to label %bb11 unwind label %bb20
35 %tmp12 = ptrtoint i8* %tmp10 to i32
36 %tmp13 = bitcast i8* %tmp10 to i32*
37 %tmp14 = shl i32 %tmp8, 2
38 %tmp15 = getelementptr i32, i32* %tmp13, i32 undef
39 %tmp16 = getelementptr i32, i32* %tmp13, i32 undef
40 %tmp17 = zext i32 %tmp9 to i64
41 %tmp18 = add i64 %tmp17, -1
42 %tmp19 = icmp ugt i64 %tmp18, 4294967295
43 br i1 %tmp19, label %bb29, label %bb31
45 bb20: ; preds = %bb43, %bb41, %bb29, %bb7
46 %tmp21 = phi i32 [ undef, %bb7 ], [ %tmp12, %bb43 ], [ %tmp12, %bb29 ], [ %tmp12, %bb41 ]
47 %tmp22 = landingpad { i8*, i32 }
48 catch i8* bitcast ({ i8*, i8* }* @Exception to i8*)
49 br i1 undef, label %bb23, label %bb69
51 bb23: ; preds = %bb38, %bb20
52 %tmp24 = phi i32 [ %tmp12, %bb38 ], [ %tmp21, %bb20 ]
53 %tmp25 = icmp eq i32 %tmp24, 0
54 br i1 %tmp25, label %bb28, label %bb26
57 %tmp27 = inttoptr i32 %tmp24 to i8*
60 bb28: ; preds = %bb26, %bb23
64 invoke void @OnOverFlow() optsize
65 to label %bb30 unwind label %bb20
71 %tmp32 = bitcast i32* %tmp15 to i8*
72 %tmp33 = zext i32 %tmp8 to i64
73 %tmp34 = add i64 %tmp33, -1
74 %tmp35 = icmp ugt i64 %tmp34, 4294967295
75 %tmp36 = icmp sgt i32 %tmp8, 0
76 %tmp37 = add i32 %tmp9, -4
79 bb38: ; preds = %bb67, %bb31
80 %tmp39 = phi i32 [ %tmp68, %bb67 ], [ undef, %bb31 ]
81 %tmp40 = icmp sgt i32 %tmp39, undef
82 br i1 %tmp40, label %bb41, label %bb23
85 invoke void @Pjii(i32* %tmp16, i32 0, i32 %tmp8) optsize
86 to label %bb42 unwind label %bb20
89 tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i1 false) nounwind
90 br i1 %tmp35, label %bb43, label %bb45
93 invoke void @OnOverFlow() optsize
94 to label %bb44 unwind label %bb20
99 bb45: ; preds = %bb57, %bb42
100 %tmp46 = phi i32 [ %tmp58, %bb57 ], [ 255, %bb42 ]
101 %tmp47 = icmp slt i32 undef, 0
102 br i1 %tmp47, label %bb48, label %bb59
104 bb48: ; preds = %bb45
105 tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i1 false) nounwind
106 br i1 %tmp36, label %bb49, label %bb57
108 bb49: ; preds = %bb49, %bb48
109 %tmp50 = phi i32 [ %tmp55, %bb49 ], [ 0, %bb48 ]
110 %tmp51 = add i32 %tmp50, undef
111 %tmp52 = add i32 %tmp50, undef
112 %tmp53 = getelementptr i32, i32* %tmp13, i32 %tmp52
113 %tmp54 = load i32, i32* %tmp53, align 4
114 %tmp55 = add i32 %tmp50, 1
115 %tmp56 = icmp eq i32 %tmp55, %tmp8
116 br i1 %tmp56, label %bb57, label %bb49
118 bb57: ; preds = %bb49, %bb48
119 %tmp58 = add i32 %tmp46, -1
122 bb59: ; preds = %bb45
123 %tmp60 = ashr i32 %tmp46, 31
124 tail call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 %tmp37, i1 false) nounwind
125 br i1 %tmp36, label %bb61, label %bb67
127 bb61: ; preds = %bb61, %bb59
128 %tmp62 = phi i32 [ %tmp65, %bb61 ], [ 0, %bb59 ]
129 %tmp63 = add i32 %tmp62, %tmp14
130 %tmp64 = getelementptr i32, i32* %tmp13, i32 %tmp63
131 store i32 0, i32* %tmp64, align 4
132 %tmp65 = add i32 %tmp62, 1
133 %tmp66 = icmp eq i32 %tmp65, %tmp8
134 br i1 %tmp66, label %bb67, label %bb61
136 bb67: ; preds = %bb61, %bb59
137 %tmp68 = add i32 %tmp39, -1
140 bb69: ; preds = %bb20
141 resume { i8*, i32 } %tmp22
144 declare i32 @__gxx_personality_v0(...)
146 declare noalias i8* @_Znam(i32) optsize
148 declare void @Pjii(i32*, i32, i32) optsize
150 declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
152 declare void @OnOverFlow() noreturn optsize ssp align 2