1 ; RUN: opt -S < %s -indvars | opt -analyze -iv-users | grep "%cmp = icmp slt i32" | grep "= {%\.ph,+,1}<%for.cond>" 2 ; PR8079 3 4 ; Provide legal integer types. 5 target datalayout = "n8:16:32:64" 6 7 ; LoopSimplify should invalidate indvars when splitting out the 8 ; inner loop. 9 10 @maxStat = external global i32 11 12 define i32 @test() nounwind { 13 entry: 14 br label %for.cond 15 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 ] 19 %add = add i32 %0, 1 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 23 24 for.cond14.preheader: ; preds = %for.cond 25 %cmp1726 = icmp sgt i32 %tmp1, 0 26 br i1 %cmp1726, label %for.body18, label %return 27 28 for.body: ; preds = %for.cond 29 %cmp2 = icmp sgt i32 %tmp1, 100 30 br i1 %cmp2, label %return, label %if.end 31 32 if.end: ; preds = %for.body 33 %cmp4 = icmp sgt i32 %tmp1, -1 34 br i1 %cmp4, label %if.then5, label %for.cond 35 36 if.then5: ; preds = %if.end 37 call void @foo() nounwind 38 %inc = add i32 %cuts.1, 1 39 br label %for.cond 40 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 48 49 return: ; preds = %for.body18, %for.body, %for.cond14.preheader 50 ret i32 0 51 } 52 53 declare void @foo() nounwind 54 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: 60 ; CHECK: ret 61 define void @mergeExit(i32 %MapAttrCount) nounwind uwtable ssp { 62 entry: 63 br i1 undef, label %if.then124, label %if.end126 64 65 if.then124: ; preds = %entry 66 unreachable 67 68 if.end126: ; preds = %entry 69 br i1 undef, label %while.body.lr.ph, label %if.end591 70 71 while.body.lr.ph: ; preds = %if.end126 72 br i1 undef, label %if.end140, label %if.then137 73 74 if.then137: ; preds = %while.body.lr.ph 75 unreachable 76 77 if.end140: ; preds = %while.body.lr.ph 78 br i1 undef, label %while.cond191.outer, label %if.then148 79 80 if.then148: ; preds = %if.end140 81 unreachable 82 83 while.cond191.outer: ; preds = %if.then205, %if.end140 84 br label %while.cond191 85 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 89 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 94 95 while.body197: ; preds = %land.rhs 96 br i1 undef, label %if.then205, label %while.cond191 97 98 if.then205: ; preds = %while.body197 99 br label %while.cond191.outer 100 101 if.then216: ; preds = %land.rhs, %while.cond191 102 br i1 undef, label %if.else, label %if.then221 103 104 if.then221: ; preds = %if.then216 105 unreachable 106 107 if.else: ; preds = %if.then216 108 br i1 undef, label %if.then266, label %if.end340 109 110 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 116 ] 117 118 if.then285: ; preds = %if.then266, %if.then266, %if.then266, %if.then266 119 br i1 undef, label %if.then317, label %if.else324 120 121 if.then317: ; preds = %if.then285 122 br label %if.end340 123 124 if.else324: ; preds = %if.then285 125 unreachable 126 127 if.else329: ; preds = %if.then266 128 unreachable 129 130 if.end340: ; preds = %if.then317, %if.else 131 unreachable 132 133 if.end591: ; preds = %if.end126 134 br i1 undef, label %cond.end, label %cond.false 135 136 cond.false: ; preds = %if.end591 137 unreachable 138 139 cond.end: ; preds = %if.end591 140 ret void 141 } 142
