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; RUN: opt < %s -indvars -S | FileCheck %s
; PR11350: Check that SimplifyIndvar handles a cycle of useless self-phis.
; CHECK-LABEL: @test(
; CHECK-NOT: lcssa = phi
define void @test() nounwind {
entry:
br label %for.cond.preheader
for.cond.preheader: ; preds = %entry
br label %for.cond.outer
for.cond.outer: ; preds = %for.cond.preheader, %for.end
%p_41.addr.0.ph = phi i32 [ %p_41.addr.1.lcssa, %for.end ], [ 1, %for.cond.preheader ]
br label %for.cond
for.cond:
br i1 true, label %for.end, label %for.ph
for.ph: ; preds = %for.cond4.preheader
br label %for.end
for.end:
%p_41.addr.1.lcssa = phi i32 [ undef, %for.ph ], [ %p_41.addr.0.ph, %for.cond ]
%p_68.lobit.i = lshr i32 %p_41.addr.1.lcssa, 31
%cmp7 = icmp eq i32 %p_41.addr.1.lcssa, 0
%conv8 = zext i1 %cmp7 to i32
br label %for.cond.outer
}
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