1 ; RUN: opt -S < %s -indvars | opt -analyze -iv-users | grep "%cmp = icmp slt i32" | grep "= {%\.ph,+,1}<%for.cond>"
4 ; Provide legal integer types.
5 target datalayout = "n8:16:32:64"
7 ; LoopSimplify should invalidate indvars when splitting out the
10 @maxStat = external global i32
12 define i32 @test() nounwind {
16 for.cond: ; preds = %if.then5, %if.end, %entry
17 %cuts.1 = phi i32 [ 0, %entry ], [ %inc, %if.then5 ], [ %cuts.1, %if.end ]
18 %0 = phi i32 [ 0, %entry ], [ %add, %if.end ], [ %add, %if.then5 ]
20 %cmp = icmp slt i32 %0, 1
21 %tmp1 = load i32, i32* @maxStat, align 4
22 br i1 %cmp, label %for.body, label %for.cond14.preheader
24 for.cond14.preheader: ; preds = %for.cond
25 %cmp1726 = icmp sgt i32 %tmp1, 0
26 br i1 %cmp1726, label %for.body18, label %return
28 for.body: ; preds = %for.cond
29 %cmp2 = icmp sgt i32 %tmp1, 100
30 br i1 %cmp2, label %return, label %if.end
32 if.end: ; preds = %for.body
33 %cmp4 = icmp sgt i32 %tmp1, -1
34 br i1 %cmp4, label %if.then5, label %for.cond
36 if.then5: ; preds = %if.end
37 call void @foo() nounwind
38 %inc = add i32 %cuts.1, 1
41 for.body18: ; preds = %for.body18, %for.cond14.preheader
42 %i13.027 = phi i32 [ %1, %for.body18 ], [ 0, %for.cond14.preheader ]
43 call void @foo() nounwind
44 %1 = add nsw i32 %i13.027, 1
45 %tmp16 = load i32, i32* @maxStat, align 4
46 %cmp17 = icmp slt i32 %1, %tmp16
47 br i1 %cmp17, label %for.body18, label %return
49 return: ; preds = %for.body18, %for.body, %for.cond14.preheader
53 declare void @foo() nounwind
55 ; Notify SCEV when removing an ExitingBlock.
56 ; CHECK-LABEL: @mergeExit(
57 ; CHECK: while.cond191:
58 ; CHECK: br i1 %or.cond, label %while.body197
59 ; CHECK-NOT: land.rhs:
61 define void @mergeExit(i32 %MapAttrCount) nounwind uwtable ssp {
63 br i1 undef, label %if.then124, label %if.end126
65 if.then124: ; preds = %entry
68 if.end126: ; preds = %entry
69 br i1 undef, label %while.body.lr.ph, label %if.end591
71 while.body.lr.ph: ; preds = %if.end126
72 br i1 undef, label %if.end140, label %if.then137
74 if.then137: ; preds = %while.body.lr.ph
77 if.end140: ; preds = %while.body.lr.ph
78 br i1 undef, label %while.cond191.outer, label %if.then148
80 if.then148: ; preds = %if.end140
83 while.cond191.outer: ; preds = %if.then205, %if.end140
84 br label %while.cond191
86 while.cond191: ; preds = %while.body197, %while.cond191.outer
87 %CppIndex.0 = phi i32 [ %inc, %while.body197 ], [ undef, %while.cond191.outer ]
88 br i1 undef, label %land.rhs, label %if.then216
90 land.rhs: ; preds = %while.cond191
91 %inc = add i32 %CppIndex.0, 1
92 %cmp196 = icmp ult i32 %inc, %MapAttrCount
93 br i1 %cmp196, label %while.body197, label %if.then216
95 while.body197: ; preds = %land.rhs
96 br i1 undef, label %if.then205, label %while.cond191
98 if.then205: ; preds = %while.body197
99 br label %while.cond191.outer
101 if.then216: ; preds = %land.rhs, %while.cond191
102 br i1 undef, label %if.else, label %if.then221
104 if.then221: ; preds = %if.then216
107 if.else: ; preds = %if.then216
108 br i1 undef, label %if.then266, label %if.end340
110 if.then266: ; preds = %if.else
111 switch i32 undef, label %if.else329 [
112 i32 17, label %if.then285
113 i32 19, label %if.then285
114 i32 18, label %if.then285
115 i32 15, label %if.then285
118 if.then285: ; preds = %if.then266, %if.then266, %if.then266, %if.then266
119 br i1 undef, label %if.then317, label %if.else324
121 if.then317: ; preds = %if.then285
124 if.else324: ; preds = %if.then285
127 if.else329: ; preds = %if.then266
130 if.end340: ; preds = %if.then317, %if.else
133 if.end591: ; preds = %if.end126
134 br i1 undef, label %cond.end, label %cond.false
136 cond.false: ; preds = %if.end591
139 cond.end: ; preds = %if.end591