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; RUN: opt < %s -loop-unroll -indvars -disable-output
@b = external global i32, align 4
; Function Attrs: nounwind uwtable
define void @fn1() #0 {
entry:
br label %for.cond1thread-pre-split
for.cond1thread-pre-split: ; preds = %for.inc8, %entry
%storemerge1 = phi i32 [ 0, %entry ], [ %inc9, %for.inc8 ]
br i1 undef, label %for.inc8, label %for.cond2.preheader.lr.ph
for.cond2.preheader.lr.ph: ; preds = %for.cond1thread-pre-split
br label %for.cond2.preheader
for.cond2.preheader: ; preds = %for.inc5, %for.cond2.preheader.lr.ph
br label %for.cond2
for.cond2: ; preds = %for.body3, %for.cond2.preheader
%storemerge = phi i32 [ %add, %for.body3 ], [ 0, %for.cond2.preheader ]
%cmp = icmp slt i32 %storemerge, 1
br i1 %cmp, label %for.body3, label %for.inc5
for.body3: ; preds = %for.cond2
%tobool4 = icmp eq i32 %storemerge, 0
%add = add nsw i32 %storemerge, 1
br i1 %tobool4, label %for.cond2, label %if.then
if.then: ; preds = %for.body3
store i32 %storemerge1, i32* @b, align 4
ret void
for.inc5: ; preds = %for.cond2
br i1 undef, label %for.cond1.for.inc8_crit_edge, label %for.cond2.preheader
for.cond1.for.inc8_crit_edge: ; preds = %for.inc5
br label %for.inc8
for.inc8: ; preds = %for.cond1.for.inc8_crit_edge, %for.cond1thread-pre-split
%inc9 = add nsw i32 %storemerge1, 1
br label %for.cond1thread-pre-split
}
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