llvm/test/CodeGen/Thumb2/setjmp_longjmp.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc %s -o - | FileCheck %s
target triple = "thumbv7-apple-ios"

declare i32 @llvm.eh.sjlj.setjmp(i8*)
declare void @llvm.eh.sjlj.longjmp(i8*)
declare i8* @llvm.frameaddress(i32)
declare i8* @llvm.stacksave()
@g = external global i32

define void @double_foobar() {
; CHECK-LABEL: double_foobar:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    push.w {r4, r5, r6, r7, r8, r10, r11, lr}
; CHECK-NEXT:    add r7, sp, #24
; CHECK-NEXT:    sub sp, #24
; CHECK-NEXT:    movs r1, #0
; CHECK-NEXT:    add r0, sp, #4
; CHECK-NEXT:    str r7, [sp, #4]
; CHECK-NEXT:    str.w sp, [sp, #12]
; CHECK-NEXT:    mov r1, pc @ eh_setjmp begin
; CHECK-NEXT:    adds r1, r1, #7
; CHECK-NEXT:    str r1, [r0, #4]
; CHECK-NEXT:    movs r0, #0
; CHECK-NEXT:    b LSJLJEH0
; CHECK-NEXT:    movs r0, #1 @ eh_setjmp end
; CHECK-NEXT:  LSJLJEH0:
; CHECK-NEXT:    cbz r0, LBB0_3
; CHECK-NEXT:  @ %bb.1: @ %if.then
; CHECK-NEXT:    movw r0, :lower16:(L_g$non_lazy_ptr-(LPC0_0+4))
; CHECK-NEXT:    movt r0, :upper16:(L_g$non_lazy_ptr-(LPC0_0+4))
; CHECK-NEXT:  LPC0_0:
; CHECK-NEXT:    add r0, pc
; CHECK-NEXT:    ldr r1, [r0]
; CHECK-NEXT:    movs r0, #1
; CHECK-NEXT:    str r1, [sp] @ 4-byte Spill
; CHECK-NEXT:    str r0, [r1]
; CHECK-NEXT:    add r0, sp, #4
; CHECK-NEXT:    movs r1, #0
; CHECK-NEXT:    str r7, [sp, #4]
; CHECK-NEXT:    str.w sp, [sp, #12]
; CHECK-NEXT:    mov r1, pc @ eh_setjmp begin
; CHECK-NEXT:    adds r1, r1, #7
; CHECK-NEXT:    str r1, [r0, #4]
; CHECK-NEXT:    movs r0, #0
; CHECK-NEXT:    b LSJLJEH1
; CHECK-NEXT:    movs r0, #1 @ eh_setjmp end
; CHECK-NEXT:  LSJLJEH1:
; CHECK-NEXT:    cmp r0, #0
; CHECK-NEXT:    itttt ne
; CHECK-NEXT:    movne r0, #3
; CHECK-NEXT:    ldrne r1, [sp] @ 4-byte Reload
; CHECK-NEXT:    strne r0, [r1]
; CHECK-NEXT:    addne sp, #24
; CHECK-NEXT:    it ne
; CHECK-NEXT:    popne.w {r4, r5, r6, r7, r8, r10, r11, pc}
; CHECK-NEXT:  LBB0_2: @ %if2.else
; CHECK-NEXT:    ldr r1, [sp] @ 4-byte Reload
; CHECK-NEXT:    movs r0, #2
; CHECK-NEXT:    str r0, [r1]
; CHECK-NEXT:    add r1, sp, #4
; CHECK-NEXT:    movs r0, #0
; CHECK-NEXT:    ldr r0, [r1, #8]
; CHECK-NEXT:    mov sp, r0
; CHECK-NEXT:    ldr r0, [r1, #4]
; CHECK-NEXT:    ldr r7, [r1]
; CHECK-NEXT:    bx r0
; CHECK-NEXT:  LBB0_3: @ %if.else
; CHECK-NEXT:    movw r0, :lower16:(L_g$non_lazy_ptr-(LPC0_1+4))
; CHECK-NEXT:    movs r1, #0
; CHECK-NEXT:    movt r0, :upper16:(L_g$non_lazy_ptr-(LPC0_1+4))
; CHECK-NEXT:  LPC0_1:
; CHECK-NEXT:    add r0, pc
; CHECK-NEXT:    ldr r0, [r0]
; CHECK-NEXT:    str r1, [r0]
; CHECK-NEXT:    add r0, sp, #4
; CHECK-NEXT:    ldr r1, [r0, #8]
; CHECK-NEXT:    mov sp, r1
; CHECK-NEXT:    ldr r1, [r0, #4]
; CHECK-NEXT:    ldr r7, [r0]
; CHECK-NEXT:    bx r1
entry:
  %buf = alloca [5 x i8*], align 4
  %bufptr = bitcast [5 x i8*]* %buf to i8*
  %arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i32 0, i32 0

  %fa = tail call i8* @llvm.frameaddress(i32 0)
  store i8* %fa, i8** %arraydecay, align 4
  %ss = tail call i8* @llvm.stacksave()
  %ssgep = getelementptr [5 x i8*], [5 x i8*]* %buf, i32 0, i32 2
  store i8* %ss, i8** %ssgep, align 4

  %setjmpres = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
  %tobool = icmp ne i32 %setjmpres, 0
  br i1 %tobool, label %if.then, label %if.else

if.then:
  store volatile i32 1, i32* @g, align 4
  br label %if.end

if.else:
  store volatile i32 0, i32* @g, align 4
  call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
  unreachable

if.end:
  %fa2 = tail call i8* @llvm.frameaddress(i32 0)
  store i8* %fa2, i8** %arraydecay, align 4
  %ss2 = tail call i8* @llvm.stacksave()
  store i8* %ss2, i8** %ssgep, align 4

  %setjmpres2 = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
  %tobool2 = icmp ne i32 %setjmpres2, 0
  br i1 %tobool2, label %if2.then, label %if2.else

if2.then:
  store volatile i32 3, i32* @g, align 4
  br label %if2.end

if2.else:
  store volatile i32 2, i32* @g, align 4
  call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
  unreachable

if2.end:
  ret void
}