test/CodeGen/Thumb/pr42760.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=thumbv6m-none-unknown-eabi -tail-dup-placement-threshold=3 < %s | FileCheck %s

define hidden void @test() {
; CHECK-LABEL: test:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    movs r0, #1
; CHECK-NEXT:    lsls r1, r0, #2
; CHECK-NEXT:    b .LBB0_2
; CHECK-NEXT:  .LBB0_1: @ %bb2
; CHECK-NEXT:    @ in Loop: Header=BB0_2 Depth=1
; CHECK-NEXT:    cmp r0, #0
; CHECK-NEXT:    bne .LBB0_6
; CHECK-NEXT:  .LBB0_2: @ %switch
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    adr r2, .LJTI0_0
; CHECK-NEXT:    ldr r2, [r2, r1]
; CHECK-NEXT:    mov pc, r2
; CHECK-NEXT:  @ %bb.3:
; CHECK-NEXT:    .p2align 2
; CHECK-NEXT:  .LJTI0_0:
; CHECK-NEXT:    .long .LBB0_6+1
; CHECK-NEXT:    .long .LBB0_4+1
; CHECK-NEXT:    .long .LBB0_6+1
; CHECK-NEXT:    .long .LBB0_5+1
; CHECK-NEXT:  .LBB0_4: @ %switch
; CHECK-NEXT:    @ in Loop: Header=BB0_2 Depth=1
; CHECK-NEXT:    b .LBB0_1
; CHECK-NEXT:  .LBB0_5: @ %bb
; CHECK-NEXT:    @ in Loop: Header=BB0_2 Depth=1
; CHECK-NEXT:    cmp r0, #0
; CHECK-NEXT:    beq .LBB0_1
; CHECK-NEXT:  .LBB0_6: @ %dead
entry:
  br label %switch

switch:                                           ; preds = %bb2, %entry
  switch i32 undef, label %dead2 [
    i32 0, label %dead
    i32 1, label %bb2
    i32 2, label %dead
    i32 3, label %bb
  ]

dead:                                             ; preds = %bb2, %bb, %switch, %switch
  unreachable

dead2:                                            ; preds = %switch
  unreachable

bb:                                               ; preds = %switch
  br i1 undef, label %dead, label %bb2

bb2:                                              ; preds = %bb, %switch
  br i1 undef, label %dead, label %switch
}