; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=thumbv8.1m.main %s -o - | FileCheck %s

; Checks that t2WhileLoopSetup is not CSEd.

define i32 @test(i16 %arg) {
; CHECK-LABEL: test:
; CHECK:       @ %bb.0: @ %bb
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    uxth r0, r0
; CHECK-NEXT:    wls lr, r0, .LBB0_4
; CHECK-NEXT:  .LBB0_1: @ %bb3
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    le lr, .LBB0_1
; CHECK-NEXT:  @ %bb.2: @ %bb2
; CHECK-NEXT:    wls lr, r0, .LBB0_4
; CHECK-NEXT:  .LBB0_3: @ %bb7
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    le lr, .LBB0_3
; CHECK-NEXT:  .LBB0_4: @ %.critedge
; CHECK-NEXT:    movs r0, #0
; CHECK-NEXT:    pop {r7, pc}
bb:
  %i = zext i16 %arg to i32
  %i1 = icmp eq i16 %arg, 0
  br i1 %i1, label %.critedge, label %bb3

bb2:                                              ; preds = %bb3
  br i1 %i1, label %.critedge, label %bb7

bb3:                                              ; preds = %bb3, %bb
  %i4 = phi i32 [ %i5, %bb3 ], [ 0, %bb ]
  %i5 = add i32 %i4, 1
  %i6 = icmp eq i32 %i5, %i
  br i1 %i6, label %bb2, label %bb3

bb7:                                              ; preds = %bb7, %bb2
  %i8 = phi i32 [ %i9, %bb7 ], [ 0, %bb2 ]
  %i9 = add i32 %i8, 1
  %i10 = icmp eq i32 %i9, %i
  br i1 %i10, label %.critedge, label %bb7

.critedge:                                        ; preds = %bb7, %bb2, %bb
  ret i32 0
}