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; RUN: llc -mcpu=ppc32 < %s
target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32"
target triple = "powerpc-unknown-linux-gnu"

define void @fn1() {
entry:
  br i1 undef, label %for.end, label %for.body

for.body:                                         ; preds = %for.body, %entry
  %inc3 = phi i64 [ %inc, %for.body ], [ undef, %entry ]
  %inc = add nsw i64 %inc3, 1
  %tobool = icmp eq i64 %inc, 0
  br i1 %tobool, label %for.end, label %for.body

for.end:                                          ; preds = %for.body, %entry
  ret void
}

; On PPC32, CTR is also 32 bits, and so cannot hold a 64-bit count.
; CHECK: @fn1
; CHECK-NOT: mtctr
; CHECK: blr