; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs < %s -mtriple=armv7-apple-ios | FileCheck --check-prefix=CHECK-APPLE %s
; RUN: llc -verify-machineinstrs -O0 < %s -mtriple=armv7-apple-ios | FileCheck --check-prefix=CHECK-O0 %s
; RUN: llc -verify-machineinstrs < %s -mtriple=armv7-linux-androideabi | FileCheck --check-prefix=CHECK-ANDROID %s

declare ptr @malloc(i64)
declare void @free(ptr)
%swift_error = type { i64, i8 }
%struct.S = type { i32, i32, i32, i32, i32, i32 }

; This tests the basic usage of a swifterror parameter. "foo" is the function
; that takes a swifterror parameter and "caller" is the caller of "foo".
define float @foo(ptr swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: foo:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {lr}
; CHECK-APPLE-NEXT:    mov r0, #16
; CHECK-APPLE-NEXT:    mov r1, #0
; CHECK-APPLE-NEXT:    bl _malloc
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    strb r0, [r8, #8]
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    pop {lr}
; CHECK-APPLE-NEXT:    bx lr
;
; CHECK-O0-LABEL: foo:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    mov r0, #16
; CHECK-O0-NEXT:    mov r1, #0
; CHECK-O0-NEXT:    bl _malloc
; CHECK-O0-NEXT:    mov r1, r0
; CHECK-O0-NEXT:    mov r8, r1
; CHECK-O0-NEXT:    mov r0, #1
; CHECK-O0-NEXT:    strb r0, [r1, #8]
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: foo:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r11, lr}
; CHECK-ANDROID-NEXT:    push {r11, lr}
; CHECK-ANDROID-NEXT:    mov r0, #16
; CHECK-ANDROID-NEXT:    mov r1, #0
; CHECK-ANDROID-NEXT:    bl malloc
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    strb r0, [r8, #8]
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    pop {r11, pc}

entry:
  %call = call ptr @malloc(i64 16)
  store ptr %call, ptr %error_ptr_ref
  %tmp = getelementptr inbounds i8, ptr %call, i64 8
  store i8 1, ptr %tmp
  ret float 1.0
}

; "caller" calls "foo" that takes a swifterror parameter.
define float @caller(ptr %error_ref) {
; CHECK-APPLE-LABEL: caller:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r8, lr}
; CHECK-APPLE-NEXT:    sub sp, sp, #4
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:    bl _foo
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    cmp r8, #0
; CHECK-APPLE-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-APPLE-NEXT:    strbeq r1, [r4]
; CHECK-APPLE-NEXT:    bl _free
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    add sp, sp, #4
; CHECK-APPLE-NEXT:    pop {r4, r8, pc}
;
; CHECK-O0-LABEL: caller:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #12
; CHECK-O0-NEXT:    @ implicit-def: $r1
; CHECK-O0-NEXT:    str	r0, [sp]                        @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    bl	_foo
; CHECK-O0-NEXT:    str	r8, [sp, #4]                    @ 4-byte Spill
; CHECK-O0-NEXT:    movw	r0, #0
; CHECK-O0-NEXT:    cmp	r8, r0
; CHECK-O0-NEXT:    bne	LBB1_2
; CHECK-O0-NEXT:  @ %bb.1: @ %cont
; CHECK-O0-NEXT:    ldr r1, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldrb r0, [r0, #8]
; CHECK-O0-NEXT:    strb r0, [r1]
; CHECK-O0-NEXT:  LBB1_2: @ %handler
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    bl _free
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    sub sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: caller:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    .pad #8
; CHECK-ANDROID-NEXT:    sub sp, sp, #8
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:    bl foo
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    cmp r8, #0
; CHECK-ANDROID-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-ANDROID-NEXT:    strbeq r1, [r4]
; CHECK-ANDROID-NEXT:    bl free
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    add sp, sp, #8
; CHECK-ANDROID-NEXT:    pop {r4, r8, r11, pc}
; Access part of the error object and save it to error_ref

; spill r0
; reload r0
entry:
  %error_ptr_ref = alloca swifterror ptr
  store ptr null, ptr %error_ptr_ref
  %call = call float @foo(ptr swifterror %error_ptr_ref)
  %error_from_foo = load ptr, ptr %error_ptr_ref
  %had_error_from_foo = icmp ne ptr %error_from_foo, null
  br i1 %had_error_from_foo, label %handler, label %cont
cont:
  %v1 = getelementptr inbounds %swift_error, ptr %error_from_foo, i64 0, i32 1
  %t = load i8, ptr %v1
  store i8 %t, ptr %error_ref
  br label %handler
handler:
  call void @free(ptr %error_from_foo)
  ret float 1.0
}

; "caller2" is the caller of "foo", it calls "foo" inside a loop.
define float @caller2(ptr %error_ref) {
; CHECK-APPLE-LABEL: caller2:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r8, lr}
; CHECK-APPLE-NEXT:    vpush {d8}
; CHECK-APPLE-NEXT:    sub sp, sp, #4
; CHECK-APPLE-NEXT:    vmov.f32 s16, #1.000000e+00
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:  LBB2_1: @ %bb_loop
; CHECK-APPLE-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    bl _foo
; CHECK-APPLE-NEXT:    cmp r8, #0
; CHECK-APPLE-NEXT:    bne LBB2_4
; CHECK-APPLE-NEXT:  @ %bb.2: @ %cont
; CHECK-APPLE-NEXT:    @ in Loop: Header=BB2_1 Depth=1
; CHECK-APPLE-NEXT:    vmov s0, r0
; CHECK-APPLE-NEXT:    vcmp.f32 s0, s16
; CHECK-APPLE-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-APPLE-NEXT:    ble LBB2_1
; CHECK-APPLE-NEXT:  @ %bb.3: @ %bb_end
; CHECK-APPLE-NEXT:    ldrb r0, [r8, #8]
; CHECK-APPLE-NEXT:    strb r0, [r4]
; CHECK-APPLE-NEXT:  LBB2_4: @ %handler
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    bl _free
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    add sp, sp, #4
; CHECK-APPLE-NEXT:    vpop {d8}
; CHECK-APPLE-NEXT:    pop {r4, r8, pc}
;
; CHECK-O0-LABEL: caller2:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #16
; CHECK-O0-NEXT:    @ implicit-def: $r1
; CHECK-O0-NEXT:    str	r0, [sp, #8] @ 4-byte Spill
; CHECK-O0-NEXT:  LBB2_1: @ %bb_loop
; CHECK-O0-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-O0-NEXT:    mov r8, #0
; CHECK-O0-NEXT:    bl _foo
; CHECK-O0-NEXT:    vmov s0, r0
; CHECK-O0-NEXT:    vstr s0, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    str r8, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    movw r0, #0
; CHECK-O0-NEXT:    cmp r8, r0
; CHECK-O0-NEXT:    bne LBB2_4
; CHECK-O0-NEXT:  @ %bb.2: @ %cont
; CHECK-O0-NEXT:    @ in Loop: Header=BB2_1 Depth=1
; CHECK-O0-NEXT:    vldr s0, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    vmov.f32 s2, #1.000000e+00
; CHECK-O0-NEXT:    vcmp.f32 s0, s2
; CHECK-O0-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-O0-NEXT:    ble LBB2_1
; CHECK-O0-NEXT:  @ %bb.3: @ %bb_end
; CHECK-O0-NEXT:    ldr r1, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldrb r0, [r0, #8]
; CHECK-O0-NEXT:    strb r0, [r1]
; CHECK-O0-NEXT:  LBB2_4: @ %handler
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    bl _free
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    sub sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: caller2:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    .vsave {d8}
; CHECK-ANDROID-NEXT:    vpush {d8}
; CHECK-ANDROID-NEXT:    .pad #8
; CHECK-ANDROID-NEXT:    sub sp, sp, #8
; CHECK-ANDROID-NEXT:    vmov.f32 s16, #1.000000e+00
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:  .LBB2_1: @ %bb_loop
; CHECK-ANDROID-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    bl foo
; CHECK-ANDROID-NEXT:    cmp r8, #0
; CHECK-ANDROID-NEXT:    bne .LBB2_4
; CHECK-ANDROID-NEXT:  @ %bb.2: @ %cont
; CHECK-ANDROID-NEXT:    @ in Loop: Header=BB2_1 Depth=1
; CHECK-ANDROID-NEXT:    vmov s0, r0
; CHECK-ANDROID-NEXT:    vcmp.f32 s0, s16
; CHECK-ANDROID-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-ANDROID-NEXT:    ble .LBB2_1
; CHECK-ANDROID-NEXT:  @ %bb.3: @ %bb_end
; CHECK-ANDROID-NEXT:    ldrb r0, [r8, #8]
; CHECK-ANDROID-NEXT:    strb r0, [r4]
; CHECK-ANDROID-NEXT:  .LBB2_4: @ %handler
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    bl free
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    add sp, sp, #8
; CHECK-ANDROID-NEXT:    vpop {d8}
; CHECK-ANDROID-NEXT:    pop {r4, r8, r11, pc}
; Access part of the error object and save it to error_ref

; spill r0
; reload r0
entry:
  %error_ptr_ref = alloca swifterror ptr
  br label %bb_loop
bb_loop:
  store ptr null, ptr %error_ptr_ref
  %call = call float @foo(ptr swifterror %error_ptr_ref)
  %error_from_foo = load ptr, ptr %error_ptr_ref
  %had_error_from_foo = icmp ne ptr %error_from_foo, null
  br i1 %had_error_from_foo, label %handler, label %cont
cont:
  %cmp = fcmp ogt float %call, 1.000000e+00
  br i1 %cmp, label %bb_end, label %bb_loop
bb_end:
  %v1 = getelementptr inbounds %swift_error, ptr %error_from_foo, i64 0, i32 1
  %t = load i8, ptr %v1
  store i8 %t, ptr %error_ref
  br label %handler
handler:
  call void @free(ptr %error_from_foo)
  ret float 1.0
}

; "foo_if" is a function that takes a swifterror parameter, it sets swifterror
; under a certain condition.
define float @foo_if(ptr swifterror %error_ptr_ref, i32 %cc) {
; CHECK-APPLE-LABEL: foo_if:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    cmp r0, #0
; CHECK-APPLE-NEXT:    vldreq s0, LCPI3_0
; CHECK-APPLE-NEXT:    vmoveq r0, s0
; CHECK-APPLE-NEXT:    bxeq lr
; CHECK-APPLE-NEXT:  LBB3_1: @ %gen_error
; CHECK-APPLE-NEXT:    push {lr}
; CHECK-APPLE-NEXT:    mov r0, #16
; CHECK-APPLE-NEXT:    mov r1, #0
; CHECK-APPLE-NEXT:    bl _malloc
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    vmov.f32 s0, #1.000000e+00
; CHECK-APPLE-NEXT:    strb r0, [r8, #8]
; CHECK-APPLE-NEXT:    pop {lr}
; CHECK-APPLE-NEXT:    vmov r0, s0
; CHECK-APPLE-NEXT:    bx lr
; CHECK-APPLE-NEXT:    .p2align 2
; CHECK-APPLE-NEXT:  @ %bb.2:
; CHECK-APPLE-NEXT:    .data_region
; CHECK-APPLE-NEXT:  LCPI3_0:
; CHECK-APPLE-NEXT:    .long 0x00000000 @ float 0
; CHECK-APPLE-NEXT:    .end_data_region
;
; CHECK-O0-LABEL: foo_if:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    sub sp, sp, #4
; CHECK-O0-NEXT:    str r8, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    cmp r0, #0
; CHECK-O0-NEXT:    beq LBB3_2
; CHECK-O0-NEXT:  @ %bb.1: @ %gen_error
; CHECK-O0-NEXT:    mov r0, #16
; CHECK-O0-NEXT:    mov r1, #0
; CHECK-O0-NEXT:    bl _malloc
; CHECK-O0-NEXT:    mov r1, r0
; CHECK-O0-NEXT:    mov r8, r1
; CHECK-O0-NEXT:    mov r0, #1
; CHECK-O0-NEXT:    strb r0, [r1, #8]
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, pc}
; CHECK-O0-NEXT:  LBB3_2: @ %normal
; CHECK-O0-NEXT:    ldr r8, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    mov r0, #0
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: foo_if:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    cmp r0, #0
; CHECK-ANDROID-NEXT:    vldreq s0, .LCPI3_0
; CHECK-ANDROID-NEXT:    vmoveq r0, s0
; CHECK-ANDROID-NEXT:    bxeq lr
; CHECK-ANDROID-NEXT:  .LBB3_1: @ %gen_error
; CHECK-ANDROID-NEXT:    .save {r11, lr}
; CHECK-ANDROID-NEXT:    push {r11, lr}
; CHECK-ANDROID-NEXT:    mov r0, #16
; CHECK-ANDROID-NEXT:    mov r1, #0
; CHECK-ANDROID-NEXT:    bl malloc
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    vmov.f32 s0, #1.000000e+00
; CHECK-ANDROID-NEXT:    strb r0, [r8, #8]
; CHECK-ANDROID-NEXT:    pop {r11, lr}
; CHECK-ANDROID-NEXT:    vmov r0, s0
; CHECK-ANDROID-NEXT:    bx lr
; CHECK-ANDROID-NEXT:    .p2align 2
; CHECK-ANDROID-NEXT:  @ %bb.2:
; CHECK-ANDROID-NEXT:  .LCPI3_0:
; CHECK-ANDROID-NEXT:    .long 0x00000000 @ float 0

; spill to stack
; reload from stack
entry:
  %cond = icmp ne i32 %cc, 0
  br i1 %cond, label %gen_error, label %normal

gen_error:
  %call = call ptr @malloc(i64 16)
  store ptr %call, ptr %error_ptr_ref
  %tmp = getelementptr inbounds i8, ptr %call, i64 8
  store i8 1, ptr %tmp
  ret float 1.0

normal:
  ret float 0.0
}

; "foo_loop" is a function that takes a swifterror parameter, it sets swifterror
; under a certain condition inside a loop.
define float @foo_loop(ptr swifterror %error_ptr_ref, i32 %cc, float %cc2) {
; CHECK-APPLE-LABEL: foo_loop:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r5, lr}
; CHECK-APPLE-NEXT:    vpush {d8, d9}
; CHECK-APPLE-NEXT:    vmov.f32 s18, #1.000000e+00
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:    vmov s16, r1
; CHECK-APPLE-NEXT:    mov r5, #1
; CHECK-APPLE-NEXT:    b LBB4_2
; CHECK-APPLE-NEXT:  LBB4_1: @ %bb_cont
; CHECK-APPLE-NEXT:    @ in Loop: Header=BB4_2 Depth=1
; CHECK-APPLE-NEXT:    vcmp.f32 s16, s18
; CHECK-APPLE-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-APPLE-NEXT:    bgt LBB4_4
; CHECK-APPLE-NEXT:  LBB4_2: @ %bb_loop
; CHECK-APPLE-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-APPLE-NEXT:    cmp r4, #0
; CHECK-APPLE-NEXT:    beq LBB4_1
; CHECK-APPLE-NEXT:  @ %bb.3: @ %gen_error
; CHECK-APPLE-NEXT:    @ in Loop: Header=BB4_2 Depth=1
; CHECK-APPLE-NEXT:    mov r0, #16
; CHECK-APPLE-NEXT:    mov r1, #0
; CHECK-APPLE-NEXT:    bl _malloc
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    strb r5, [r0, #8]
; CHECK-APPLE-NEXT:    b LBB4_1
; CHECK-APPLE-NEXT:  LBB4_4: @ %bb_end
; CHECK-APPLE-NEXT:    mov r0, #0
; CHECK-APPLE-NEXT:    vpop {d8, d9}
; CHECK-APPLE-NEXT:    pop {r4, r5, pc}
;
; CHECK-O0-LABEL: foo_loop:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    sub sp, sp, #20
; CHECK-O0-NEXT:    str r0, [sp, #8] @ 4-byte Spill
; CHECK-O0-NEXT:    vmov s0, r1
; CHECK-O0-NEXT:    vstr s0, [r7, #-8] @ 4-byte Spill
; CHECK-O0-NEXT:    str r8, [r7, #-4] @ 4-byte Spill
; CHECK-O0-NEXT:    b LBB4_1
; CHECK-O0-NEXT:  LBB4_1: @ %bb_loop
; CHECK-O0-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-O0-NEXT:    ldr r1, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [r7, #-4] @ 4-byte Reload
; CHECK-O0-NEXT:    cmp r1, #0
; CHECK-O0-NEXT:    str r0, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    beq LBB4_3
; CHECK-O0-NEXT:  @ %bb.2: @ %gen_error
; CHECK-O0-NEXT:    @ in Loop: Header=BB4_1 Depth=1
; CHECK-O0-NEXT:    mov r0, #16
; CHECK-O0-NEXT:    mov r1, #0
; CHECK-O0-NEXT:    bl _malloc
; CHECK-O0-NEXT:    mov r2, r0
; CHECK-O0-NEXT:    movw r1, #1
; CHECK-O0-NEXT:    strb r1, [r2, #8]
; CHECK-O0-NEXT:    str r0, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:  LBB4_3: @ %bb_cont
; CHECK-O0-NEXT:    @ in Loop: Header=BB4_1 Depth=1
; CHECK-O0-NEXT:    vldr s0, [r7, #-8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    str r0, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    vmov.f32 s2, #1.000000e+00
; CHECK-O0-NEXT:    vcmp.f32 s0, s2
; CHECK-O0-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-O0-NEXT:    str r0, [r7, #-4] @ 4-byte Spill
; CHECK-O0-NEXT:    ble LBB4_1
; CHECK-O0-NEXT:  @ %bb.4: @ %bb_end
; CHECK-O0-NEXT:    ldr r8, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    mov r0, #0
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: foo_loop:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r5, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r5, r11, lr}
; CHECK-ANDROID-NEXT:    .vsave {d8, d9}
; CHECK-ANDROID-NEXT:    vpush {d8, d9}
; CHECK-ANDROID-NEXT:    vmov.f32 s18, #1.000000e+00
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:    vmov s16, r1
; CHECK-ANDROID-NEXT:    mov r5, #1
; CHECK-ANDROID-NEXT:    b .LBB4_2
; CHECK-ANDROID-NEXT:  .LBB4_1: @ %bb_cont
; CHECK-ANDROID-NEXT:    @ in Loop: Header=BB4_2 Depth=1
; CHECK-ANDROID-NEXT:    vcmp.f32 s16, s18
; CHECK-ANDROID-NEXT:    vmrs APSR_nzcv, fpscr
; CHECK-ANDROID-NEXT:    bgt .LBB4_4
; CHECK-ANDROID-NEXT:  .LBB4_2: @ %bb_loop
; CHECK-ANDROID-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-ANDROID-NEXT:    cmp r4, #0
; CHECK-ANDROID-NEXT:    beq .LBB4_1
; CHECK-ANDROID-NEXT:  @ %bb.3: @ %gen_error
; CHECK-ANDROID-NEXT:    @ in Loop: Header=BB4_2 Depth=1
; CHECK-ANDROID-NEXT:    mov r0, #16
; CHECK-ANDROID-NEXT:    mov r1, #0
; CHECK-ANDROID-NEXT:    bl malloc
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    strb r5, [r0, #8]
; CHECK-ANDROID-NEXT:    b .LBB4_1
; CHECK-ANDROID-NEXT:  .LBB4_4: @ %bb_end
; CHECK-ANDROID-NEXT:    mov r0, #0
; CHECK-ANDROID-NEXT:    vpop {d8, d9}
; CHECK-ANDROID-NEXT:    pop {r4, r5, r11, pc}
; swifterror is kept in a register

; spill r0
; reload from stack
entry:
  br label %bb_loop

bb_loop:
  %cond = icmp ne i32 %cc, 0
  br i1 %cond, label %gen_error, label %bb_cont

gen_error:
  %call = call ptr @malloc(i64 16)
  store ptr %call, ptr %error_ptr_ref
  %tmp = getelementptr inbounds i8, ptr %call, i64 8
  store i8 1, ptr %tmp
  br label %bb_cont

bb_cont:
  %cmp = fcmp ogt float %cc2, 1.000000e+00
  br i1 %cmp, label %bb_end, label %bb_loop
bb_end:
  ret float 0.0
}

; "foo_sret" is a function that takes a swifterror parameter, it also has a sret
; parameter.
define void @foo_sret(ptr sret(%struct.S) %agg.result, i32 %val1, ptr swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: foo_sret:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r5, lr}
; CHECK-APPLE-NEXT:    mov r4, r1
; CHECK-APPLE-NEXT:    mov r5, r0
; CHECK-APPLE-NEXT:    mov r0, #16
; CHECK-APPLE-NEXT:    mov r1, #0
; CHECK-APPLE-NEXT:    bl _malloc
; CHECK-APPLE-NEXT:    mov r1, #1
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    strb r1, [r0, #8]
; CHECK-APPLE-NEXT:    str r4, [r5, #4]
; CHECK-APPLE-NEXT:    pop {r4, r5, pc}
;
; CHECK-O0-LABEL: foo_sret:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    sub sp, sp, #8
; CHECK-O0-NEXT:    str r1, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    str r0, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    mov r0, #16
; CHECK-O0-NEXT:    mov r1, #0
; CHECK-O0-NEXT:    bl _malloc
; CHECK-O0-NEXT:    ldr r1, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    mov r3, r0
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    mov r8, r3
; CHECK-O0-NEXT:    mov r2, #1
; CHECK-O0-NEXT:    strb r2, [r3, #8]
; CHECK-O0-NEXT:    str r1, [r0, #4]
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: foo_sret:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r5, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r5, r11, lr}
; CHECK-ANDROID-NEXT:    mov r4, r1
; CHECK-ANDROID-NEXT:    mov r5, r0
; CHECK-ANDROID-NEXT:    mov r0, #16
; CHECK-ANDROID-NEXT:    mov r1, #0
; CHECK-ANDROID-NEXT:    bl malloc
; CHECK-ANDROID-NEXT:    mov r1, #1
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    strb r1, [r0, #8]
; CHECK-ANDROID-NEXT:    str r4, [r5, #4]
; CHECK-ANDROID-NEXT:    pop {r4, r5, r11, pc}

; spill to stack: sret and val1
; reload from stack: sret and val1
entry:
  %call = call ptr @malloc(i64 16)
  store ptr %call, ptr %error_ptr_ref
  %tmp = getelementptr inbounds i8, ptr %call, i64 8
  store i8 1, ptr %tmp
  %v2 = getelementptr inbounds %struct.S, ptr %agg.result, i32 0, i32 1
  store i32 %val1, ptr %v2
  ret void
}

; "caller3" calls "foo_sret" that takes a swifterror parameter.
define float @caller3(ptr %error_ref) {
; CHECK-APPLE-LABEL: caller3:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r7, r8, lr}
; CHECK-APPLE-NEXT:    add r7, sp, #8
; CHECK-APPLE-NEXT:    sub sp, sp, #32
; CHECK-APPLE-NEXT:    bfc sp, #0, #3
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:    add r0, sp, #8
; CHECK-APPLE-NEXT:    mov r1, #1
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    bl _foo_sret
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    cmp r8, #0
; CHECK-APPLE-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-APPLE-NEXT:    strbeq r1, [r4]
; CHECK-APPLE-NEXT:    bl _free
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    sub sp, r7, #8
; CHECK-APPLE-NEXT:    pop {r4, r7, r8, pc}
;
; CHECK-O0-LABEL: caller3:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #44
; CHECK-O0-NEXT:    bfc	sp, #0, #3
; CHECK-O0-NEXT:    @ implicit-def: $r1
; CHECK-O0-NEXT:    str	r0, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    add	r0, sp, #16
; CHECK-O0-NEXT:    mov	r1, #1
; CHECK-O0-NEXT:    bl	_foo_sret
; CHECK-O0-NEXT:    str	r8, [sp, #8] @ 4-byte Spill
; CHECK-O0-NEXT:    movw	r0, #0
; CHECK-O0-NEXT:    cmp	r8, r0
; CHECK-O0-NEXT:    bne	LBB6_2
; CHECK-O0-NEXT:  @ %bb.1: @ %cont
; CHECK-O0-NEXT:    ldr r1, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldrb r0, [r0, #8]
; CHECK-O0-NEXT:    strb r0, [r1]
; CHECK-O0-NEXT:  LBB6_2: @ %handler
; CHECK-O0-NEXT:    ldr r0, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    bl _free
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    sub sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: caller3:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    .pad #32
; CHECK-ANDROID-NEXT:    sub sp, sp, #32
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:    add r0, sp, #8
; CHECK-ANDROID-NEXT:    mov r1, #1
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    bl foo_sret
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    cmp r8, #0
; CHECK-ANDROID-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-ANDROID-NEXT:    strbeq r1, [r4]
; CHECK-ANDROID-NEXT:    bl free
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    add sp, sp, #32
; CHECK-ANDROID-NEXT:    pop {r4, r8, r11, pc}
; Access part of the error object and save it to error_ref

; Access part of the error object and save it to error_ref
entry:
  %s = alloca %struct.S, align 8
  %error_ptr_ref = alloca swifterror ptr
  store ptr null, ptr %error_ptr_ref
  call void @foo_sret(ptr sret(%struct.S) %s, i32 1, ptr swifterror %error_ptr_ref)
  %error_from_foo = load ptr, ptr %error_ptr_ref
  %had_error_from_foo = icmp ne ptr %error_from_foo, null
  br i1 %had_error_from_foo, label %handler, label %cont
cont:
  %v1 = getelementptr inbounds %swift_error, ptr %error_from_foo, i64 0, i32 1
  %t = load i8, ptr %v1
  store i8 %t, ptr %error_ref
  br label %handler
handler:
  call void @free(ptr %error_from_foo)
  ret float 1.0
}

; "foo_vararg" is a function that takes a swifterror parameter, it also has
; variable number of arguments.
declare void @llvm.va_start(ptr) nounwind
define float @foo_vararg(ptr swifterror %error_ptr_ref, ...) {
; CHECK-APPLE-LABEL: foo_vararg:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    sub sp, sp, #16
; CHECK-APPLE-NEXT:    push {r7, lr}
; CHECK-APPLE-NEXT:    mov r7, sp
; CHECK-APPLE-NEXT:    sub sp, sp, #24
; CHECK-APPLE-NEXT:    bfc sp, #0, #3
; CHECK-APPLE-NEXT:    add r8, r7, #8
; CHECK-APPLE-NEXT:    stm r8, {r0, r1, r2, r3}
; CHECK-APPLE-NEXT:    mov r0, #16
; CHECK-APPLE-NEXT:    mov r1, #0
; CHECK-APPLE-NEXT:    bl _malloc
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    strb r0, [r8, #8]
; CHECK-APPLE-NEXT:    add r0, r7, #8
; CHECK-APPLE-NEXT:    add r0, r0, #4
; CHECK-APPLE-NEXT:    ldr r2, [r7, #8]
; CHECK-APPLE-NEXT:    ldr r1, [r0], #4
; CHECK-APPLE-NEXT:    ldr r3, [r0], #4
; CHECK-APPLE-NEXT:    str r0, [sp, #16]
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    str r2, [sp, #12]
; CHECK-APPLE-NEXT:    str r1, [sp, #8]
; CHECK-APPLE-NEXT:    str r3, [sp, #4]
; CHECK-APPLE-NEXT:    mov sp, r7
; CHECK-APPLE-NEXT:    pop {r7, lr}
; CHECK-APPLE-NEXT:    add sp, sp, #16
; CHECK-APPLE-NEXT:    bx lr
;
; CHECK-O0-LABEL: foo_vararg:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    sub sp, sp, #16
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    sub sp, sp, #24
; CHECK-O0-NEXT:    bfc sp, #0, #3
; CHECK-O0-NEXT:    str r3, [r7, #20]
; CHECK-O0-NEXT:    str r2, [r7, #16]
; CHECK-O0-NEXT:    str r1, [r7, #12]
; CHECK-O0-NEXT:    str r0, [r7, #8]
; CHECK-O0-NEXT:    mov r0, #16
; CHECK-O0-NEXT:    mov r1, #0
; CHECK-O0-NEXT:    bl _malloc
; CHECK-O0-NEXT:    mov r1, r0
; CHECK-O0-NEXT:    mov r8, r1
; CHECK-O0-NEXT:    mov r0, #1
; CHECK-O0-NEXT:    strb r0, [r1, #8]
; CHECK-O0-NEXT:    add r0, r7, #8
; CHECK-O0-NEXT:    str r0, [sp, #16]
; CHECK-O0-NEXT:    ldr r0, [sp, #16]
; CHECK-O0-NEXT:    add r1, r0, #4
; CHECK-O0-NEXT:    str r1, [sp, #16]
; CHECK-O0-NEXT:    ldr r0, [r0]
; CHECK-O0-NEXT:    str r0, [sp, #12]
; CHECK-O0-NEXT:    ldr r0, [sp, #16]
; CHECK-O0-NEXT:    add r1, r0, #4
; CHECK-O0-NEXT:    str r1, [sp, #16]
; CHECK-O0-NEXT:    ldr r0, [r0]
; CHECK-O0-NEXT:    str r0, [sp, #8]
; CHECK-O0-NEXT:    ldr r0, [sp, #16]
; CHECK-O0-NEXT:    add r1, r0, #4
; CHECK-O0-NEXT:    str r1, [sp, #16]
; CHECK-O0-NEXT:    ldr r0, [r0]
; CHECK-O0-NEXT:    str r0, [sp, #4]
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, lr}
; CHECK-O0-NEXT:    add sp, sp, #16
; CHECK-O0-NEXT:    bx lr
;
; CHECK-ANDROID-LABEL: foo_vararg:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .pad #16
; CHECK-ANDROID-NEXT:    sub sp, sp, #16
; CHECK-ANDROID-NEXT:    .save {r11, lr}
; CHECK-ANDROID-NEXT:    push {r11, lr}
; CHECK-ANDROID-NEXT:    .pad #24
; CHECK-ANDROID-NEXT:    sub sp, sp, #24
; CHECK-ANDROID-NEXT:    add r8, sp, #32
; CHECK-ANDROID-NEXT:    stm r8, {r0, r1, r2, r3}
; CHECK-ANDROID-NEXT:    mov r0, #16
; CHECK-ANDROID-NEXT:    mov r1, #0
; CHECK-ANDROID-NEXT:    bl malloc
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    strb r0, [r8, #8]
; CHECK-ANDROID-NEXT:    add r0, sp, #32
; CHECK-ANDROID-NEXT:    orr r0, r0, #4
; CHECK-ANDROID-NEXT:    ldr r2, [sp, #32]
; CHECK-ANDROID-NEXT:    ldr r1, [r0], #4
; CHECK-ANDROID-NEXT:    ldr r3, [r0], #4
; CHECK-ANDROID-NEXT:    str r0, [sp, #16]
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    str r2, [sp, #12]
; CHECK-ANDROID-NEXT:    str r1, [sp, #8]
; CHECK-ANDROID-NEXT:    str r3, [sp, #4]
; CHECK-ANDROID-NEXT:    add sp, sp, #24
; CHECK-ANDROID-NEXT:    pop {r11, lr}
; CHECK-ANDROID-NEXT:    add sp, sp, #16
; CHECK-ANDROID-NEXT:    bx lr

entry:
  %call = call ptr @malloc(i64 16)
  store ptr %call, ptr %error_ptr_ref
  %tmp = getelementptr inbounds i8, ptr %call, i64 8
  store i8 1, ptr %tmp

  %args = alloca ptr, align 8
  %a10 = alloca i32, align 4
  %a11 = alloca i32, align 4
  %a12 = alloca i32, align 4
  call void @llvm.va_start(ptr %args)
  %v11 = va_arg ptr %args, i32
  store i32 %v11, ptr %a10, align 4
  %v12 = va_arg ptr %args, i32
  store i32 %v12, ptr %a11, align 4
  %v13 = va_arg ptr %args, i32
  store i32 %v13, ptr %a12, align 4

  ret float 1.0
}

; "caller4" calls "foo_vararg" that takes a swifterror parameter.
define float @caller4(ptr %error_ref) {
; CHECK-APPLE-LABEL: caller4:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, r8, lr}
; CHECK-APPLE-NEXT:    sub sp, sp, #16
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:    mov r0, #11
; CHECK-APPLE-NEXT:    str r0, [sp, #4]
; CHECK-APPLE-NEXT:    mov r0, #10
; CHECK-APPLE-NEXT:    str r0, [sp, #8]
; CHECK-APPLE-NEXT:    mov r0, #12
; CHECK-APPLE-NEXT:    str r0, [sp]
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    mov r0, #10
; CHECK-APPLE-NEXT:    mov r1, #11
; CHECK-APPLE-NEXT:    mov r2, #12
; CHECK-APPLE-NEXT:    bl _foo_vararg
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    cmp r8, #0
; CHECK-APPLE-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-APPLE-NEXT:    strbeq r1, [r4]
; CHECK-APPLE-NEXT:    bl _free
; CHECK-APPLE-NEXT:    mov r0, #1065353216
; CHECK-APPLE-NEXT:    add sp, sp, #16
; CHECK-APPLE-NEXT:    pop {r4, r8, pc}
;
; CHECK-O0-LABEL: caller4:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #24
; CHECK-O0-NEXT:    @ implicit-def: $r1
; CHECK-O0-NEXT:    str	r0, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    mov	r0, #10
; CHECK-O0-NEXT:    str	r0, [r7, #-12]
; CHECK-O0-NEXT:    mov	r0, #11
; CHECK-O0-NEXT:    str	r0, [sp, #12]
; CHECK-O0-NEXT:    mov	r0, #12
; CHECK-O0-NEXT:    str	r0, [sp, #8]
; CHECK-O0-NEXT:    ldr	r0, [r7, #-12]
; CHECK-O0-NEXT:    ldr	r1, [sp, #12]
; CHECK-O0-NEXT:    ldr	r2, [sp, #8]
; CHECK-O0-NEXT:    bl	_foo_vararg
; CHECK-O0-NEXT:    str	r8, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    movw	r0, #0
; CHECK-O0-NEXT:    cmp	r8, r0
; CHECK-O0-NEXT:    bne	LBB8_2
; CHECK-O0-NEXT:  @ %bb.1: @ %cont
; CHECK-O0-NEXT:    ldr r1, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldrb r0, [r0, #8]
; CHECK-O0-NEXT:    strb r0, [r1]
; CHECK-O0-NEXT:  LBB8_2: @ %handler
; CHECK-O0-NEXT:    ldr r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    bl _free
; CHECK-O0-NEXT:    mov r0, #1065353216
; CHECK-O0-NEXT:    sub sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: caller4:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r8, r11, lr}
; CHECK-ANDROID-NEXT:    .pad #16
; CHECK-ANDROID-NEXT:    sub sp, sp, #16
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:    mov r0, #11
; CHECK-ANDROID-NEXT:    str r0, [sp, #4]
; CHECK-ANDROID-NEXT:    mov r0, #10
; CHECK-ANDROID-NEXT:    str r0, [sp, #8]
; CHECK-ANDROID-NEXT:    mov r0, #12
; CHECK-ANDROID-NEXT:    str r0, [sp]
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    mov r0, #10
; CHECK-ANDROID-NEXT:    mov r1, #11
; CHECK-ANDROID-NEXT:    mov r2, #12
; CHECK-ANDROID-NEXT:    bl foo_vararg
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    cmp r8, #0
; CHECK-ANDROID-NEXT:    ldrbeq r1, [r0, #8]
; CHECK-ANDROID-NEXT:    strbeq r1, [r4]
; CHECK-ANDROID-NEXT:    bl free
; CHECK-ANDROID-NEXT:    mov r0, #1065353216
; CHECK-ANDROID-NEXT:    add sp, sp, #16
; CHECK-ANDROID-NEXT:    pop {r4, r8, r11, pc}
; Access part of the error object and save it to error_ref
entry:
  %error_ptr_ref = alloca swifterror ptr
  store ptr null, ptr %error_ptr_ref

  %a10 = alloca i32, align 4
  %a11 = alloca i32, align 4
  %a12 = alloca i32, align 4
  store i32 10, ptr %a10, align 4
  store i32 11, ptr %a11, align 4
  store i32 12, ptr %a12, align 4
  %v10 = load i32, ptr %a10, align 4
  %v11 = load i32, ptr %a11, align 4
  %v12 = load i32, ptr %a12, align 4

  %call = call float (ptr, ...) @foo_vararg(ptr swifterror %error_ptr_ref, i32 %v10, i32 %v11, i32 %v12)
  %error_from_foo = load ptr, ptr %error_ptr_ref
  %had_error_from_foo = icmp ne ptr %error_from_foo, null
  br i1 %had_error_from_foo, label %handler, label %cont

cont:
  %v1 = getelementptr inbounds %swift_error, ptr %error_from_foo, i64 0, i32 1
  %t = load i8, ptr %v1
  store i8 %t, ptr %error_ref
  br label %handler
handler:
  call void @free(ptr %error_from_foo)
  ret float 1.0
}

; Check that we don't blow up on tail calling swifterror argument functions.
define float @tailcallswifterror(ptr swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: tailcallswifterror:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {lr}
; CHECK-APPLE-NEXT:    bl _tailcallswifterror
; CHECK-APPLE-NEXT:    pop {lr}
; CHECK-APPLE-NEXT:    bx lr
;
; CHECK-O0-LABEL: tailcallswifterror:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    bl _tailcallswifterror
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: tailcallswifterror:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r11, lr}
; CHECK-ANDROID-NEXT:    push {r11, lr}
; CHECK-ANDROID-NEXT:    bl tailcallswifterror
; CHECK-ANDROID-NEXT:    pop {r11, pc}
entry:
  %0 = tail call float @tailcallswifterror(ptr swifterror %error_ptr_ref)
  ret float %0
}
define swiftcc float @tailcallswifterror_swiftcc(ptr swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: tailcallswifterror_swiftcc:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {lr}
; CHECK-APPLE-NEXT:    bl _tailcallswifterror_swiftcc
; CHECK-APPLE-NEXT:    pop {lr}
; CHECK-APPLE-NEXT:    bx lr
;
; CHECK-O0-LABEL: tailcallswifterror_swiftcc:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    bl _tailcallswifterror_swiftcc
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: tailcallswifterror_swiftcc:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r11, lr}
; CHECK-ANDROID-NEXT:    push {r11, lr}
; CHECK-ANDROID-NEXT:    bl tailcallswifterror_swiftcc
; CHECK-ANDROID-NEXT:    pop {r11, pc}
entry:
  %0 = tail call swiftcc float @tailcallswifterror_swiftcc(ptr swifterror %error_ptr_ref)
  ret float %0
}

define swiftcc void @swifterror_clobber(ptr nocapture swifterror %err) {
; CHECK-APPLE-LABEL: swifterror_clobber:
; CHECK-APPLE:       @ %bb.0:
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    @ InlineAsm Start
; CHECK-APPLE-NEXT:    nop
; CHECK-APPLE-NEXT:    @ InlineAsm End
; CHECK-APPLE-NEXT:    mov r8, r0
; CHECK-APPLE-NEXT:    bx lr
;
; CHECK-O0-LABEL: swifterror_clobber:
; CHECK-O0:       @ %bb.0:
; CHECK-O0-NEXT:    sub sp, sp, #4
; CHECK-O0-NEXT:    str r8, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    @ InlineAsm Start
; CHECK-O0-NEXT:    nop
; CHECK-O0-NEXT:    @ InlineAsm End
; CHECK-O0-NEXT:    ldr r8, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    add sp, sp, #4
; CHECK-O0-NEXT:    bx lr
;
; CHECK-ANDROID-LABEL: swifterror_clobber:
; CHECK-ANDROID:       @ %bb.0:
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    @APP
; CHECK-ANDROID-NEXT:    nop
; CHECK-ANDROID-NEXT:    @NO_APP
; CHECK-ANDROID-NEXT:    mov r8, r0
; CHECK-ANDROID-NEXT:    bx lr
  call void asm sideeffect "nop", "~{r8}"()
  ret void
}

define swiftcc void @swifterror_reg_clobber(ptr nocapture %err) {
; CHECK-APPLE-LABEL: swifterror_reg_clobber:
; CHECK-APPLE:       @ %bb.0:
; CHECK-APPLE-NEXT:    push {r8, lr}
; CHECK-APPLE-NEXT:    @ InlineAsm Start
; CHECK-APPLE-NEXT:    nop
; CHECK-APPLE-NEXT:    @ InlineAsm End
; CHECK-APPLE-NEXT:    pop {r8, pc}
;
; CHECK-O0-LABEL: swifterror_reg_clobber:
; CHECK-O0:       @ %bb.0:
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    @ InlineAsm Start
; CHECK-O0-NEXT:    nop
; CHECK-O0-NEXT:    @ InlineAsm End
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: swifterror_reg_clobber:
; CHECK-ANDROID:       @ %bb.0:
; CHECK-ANDROID-NEXT:    .save {r8, lr}
; CHECK-ANDROID-NEXT:    push {r8, lr}
; CHECK-ANDROID-NEXT:    @APP
; CHECK-ANDROID-NEXT:    nop
; CHECK-ANDROID-NEXT:    @NO_APP
; CHECK-ANDROID-NEXT:    pop {r8, pc}
  call void asm sideeffect "nop", "~{r8}"()
  ret void
}

define swiftcc void @params_in_reg(i32, i32, i32, i32, ptr swiftself, ptr nocapture swifterror %err) {
; CHECK-APPLE-LABEL: params_in_reg:
; CHECK-APPLE:       @ %bb.0:
; CHECK-APPLE-NEXT:    push {r4, r5, r6, r7, r10, r11, lr}
; CHECK-APPLE-NEXT:    add r7, sp, #20
; CHECK-APPLE-NEXT:    sub sp, sp, #12
; CHECK-APPLE-NEXT:    bfc sp, #0, #3
; CHECK-APPLE-NEXT:    str r8, [sp, #4] @ 4-byte Spill
; CHECK-APPLE-NEXT:    mov r6, r3
; CHECK-APPLE-NEXT:    str r10, [sp] @ 4-byte Spill
; CHECK-APPLE-NEXT:    mov r4, r2
; CHECK-APPLE-NEXT:    mov r11, r1
; CHECK-APPLE-NEXT:    mov r5, r0
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    mov r1, #2
; CHECK-APPLE-NEXT:    mov r2, #3
; CHECK-APPLE-NEXT:    mov r3, #4
; CHECK-APPLE-NEXT:    mov r10, #0
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    bl _params_in_reg2
; CHECK-APPLE-NEXT:    ldr r10, [sp] @ 4-byte Reload
; CHECK-APPLE-NEXT:    mov r0, r5
; CHECK-APPLE-NEXT:    ldr r8, [sp, #4] @ 4-byte Reload
; CHECK-APPLE-NEXT:    mov r1, r11
; CHECK-APPLE-NEXT:    mov r2, r4
; CHECK-APPLE-NEXT:    mov r3, r6
; CHECK-APPLE-NEXT:    bl _params_in_reg2
; CHECK-APPLE-NEXT:    sub sp, r7, #20
; CHECK-APPLE-NEXT:    pop {r4, r5, r6, r7, r10, r11, pc}
;
; CHECK-O0-LABEL: params_in_reg:
; CHECK-O0:       @ %bb.0:
; CHECK-O0-NEXT:    push	{r7, r10, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #28
; CHECK-O0-NEXT:    bfc	sp, #0, #3
; CHECK-O0-NEXT:    str	r8, [sp, #20] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r10, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r3, [sp, #16] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r2, [sp, #12] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r1, [sp, #8] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r0, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    @ implicit-def: $r0
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    mov	r0, #1
; CHECK-O0-NEXT:    mov	r1, #2
; CHECK-O0-NEXT:    mov	r2, #3
; CHECK-O0-NEXT:    mov	r3, #4
; CHECK-O0-NEXT:    mov	r10, r8
; CHECK-O0-NEXT:    bl	_params_in_reg2
; CHECK-O0-NEXT:    ldr	r10, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r0, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r1, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r2, [sp, #12] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r3, [sp, #16] @ 4-byte Reload
; CHECK-O0-NEXT:    mov	r9, r8
; CHECK-O0-NEXT:    ldr	r8, [sp, #20] @ 4-byte Reload
; CHECK-O0-NEXT:    bl	_params_in_reg2
; CHECK-O0-NEXT:    sub	sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r10, pc}
;
; CHECK-ANDROID-LABEL: params_in_reg:
; CHECK-ANDROID:       @ %bb.0:
; CHECK-ANDROID-NEXT:    .save {r4, r5, r6, r7, r9, r10, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r5, r6, r7, r9, r10, r11, lr}
; CHECK-ANDROID-NEXT:    .pad #8
; CHECK-ANDROID-NEXT:    sub sp, sp, #8
; CHECK-ANDROID-NEXT:    mov r9, r8
; CHECK-ANDROID-NEXT:    mov r11, r10
; CHECK-ANDROID-NEXT:    mov r6, r3
; CHECK-ANDROID-NEXT:    mov r7, r2
; CHECK-ANDROID-NEXT:    mov r4, r1
; CHECK-ANDROID-NEXT:    mov r5, r0
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    mov r1, #2
; CHECK-ANDROID-NEXT:    mov r2, #3
; CHECK-ANDROID-NEXT:    mov r3, #4
; CHECK-ANDROID-NEXT:    mov r10, #0
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    bl params_in_reg2
; CHECK-ANDROID-NEXT:    mov r0, r5
; CHECK-ANDROID-NEXT:    mov r1, r4
; CHECK-ANDROID-NEXT:    mov r2, r7
; CHECK-ANDROID-NEXT:    mov r3, r6
; CHECK-ANDROID-NEXT:    mov r10, r11
; CHECK-ANDROID-NEXT:    mov r8, r9
; CHECK-ANDROID-NEXT:    bl params_in_reg2
; CHECK-ANDROID-NEXT:    add sp, sp, #8
; CHECK-ANDROID-NEXT:    pop {r4, r5, r6, r7, r9, r10, r11, pc}
  %error_ptr_ref = alloca swifterror ptr, align 8
  store ptr null, ptr %error_ptr_ref
  call swiftcc void @params_in_reg2(i32 1, i32 2, i32 3, i32 4, ptr swiftself null, ptr nocapture swifterror %error_ptr_ref)
  call swiftcc void @params_in_reg2(i32 %0, i32 %1, i32 %2, i32 %3, ptr swiftself %4, ptr nocapture swifterror %err)
  ret void
}
declare swiftcc void @params_in_reg2(i32, i32, i32, i32, ptr swiftself, ptr nocapture swifterror %err)

define swiftcc { i32, i32, i32, i32} @params_and_return_in_reg(i32, i32, i32, i32, ptr swiftself, ptr nocapture swifterror %err) {
; CHECK-APPLE-LABEL: params_and_return_in_reg:
; CHECK-APPLE:       @ %bb.0:
; CHECK-APPLE-NEXT:    push {r4, r5, r6, r7, r10, r11, lr}
; CHECK-APPLE-NEXT:    add r7, sp, #20
; CHECK-APPLE-NEXT:    sub sp, sp, #20
; CHECK-APPLE-NEXT:    bfc sp, #0, #3
; CHECK-APPLE-NEXT:    mov r6, r8
; CHECK-APPLE-NEXT:    str r10, [sp, #12] @ 4-byte Spill
; CHECK-APPLE-NEXT:    str r3, [sp, #8] @ 4-byte Spill
; CHECK-APPLE-NEXT:    mov r4, r2
; CHECK-APPLE-NEXT:    mov r11, r1
; CHECK-APPLE-NEXT:    mov r5, r0
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    mov r1, #2
; CHECK-APPLE-NEXT:    mov r2, #3
; CHECK-APPLE-NEXT:    mov r3, #4
; CHECK-APPLE-NEXT:    mov r10, #0
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    bl _params_in_reg2
; CHECK-APPLE-NEXT:    ldr r3, [sp, #8] @ 4-byte Reload
; CHECK-APPLE-NEXT:    mov r0, r5
; CHECK-APPLE-NEXT:    ldr r10, [sp, #12] @ 4-byte Reload
; CHECK-APPLE-NEXT:    mov r1, r11
; CHECK-APPLE-NEXT:    str r8, [sp, #4] @ 4-byte Spill
; CHECK-APPLE-NEXT:    mov r2, r4
; CHECK-APPLE-NEXT:    mov r8, r6
; CHECK-APPLE-NEXT:    bl _params_and_return_in_reg2
; CHECK-APPLE-NEXT:    str r8, [sp, #12] @ 4-byte Spill
; CHECK-APPLE-NEXT:    mov r4, r0
; CHECK-APPLE-NEXT:    ldr r8, [sp, #4] @ 4-byte Reload
; CHECK-APPLE-NEXT:    mov r5, r1
; CHECK-APPLE-NEXT:    mov r6, r2
; CHECK-APPLE-NEXT:    mov r11, r3
; CHECK-APPLE-NEXT:    mov r0, #1
; CHECK-APPLE-NEXT:    mov r1, #2
; CHECK-APPLE-NEXT:    mov r2, #3
; CHECK-APPLE-NEXT:    mov r3, #4
; CHECK-APPLE-NEXT:    mov r10, #0
; CHECK-APPLE-NEXT:    bl _params_in_reg2
; CHECK-APPLE-NEXT:    mov r0, r4
; CHECK-APPLE-NEXT:    mov r1, r5
; CHECK-APPLE-NEXT:    mov r2, r6
; CHECK-APPLE-NEXT:    mov r3, r11
; CHECK-APPLE-NEXT:    ldr r8, [sp, #12] @ 4-byte Reload
; CHECK-APPLE-NEXT:    sub sp, r7, #20
; CHECK-APPLE-NEXT:    pop {r4, r5, r6, r7, r10, r11, pc}
;
; CHECK-O0-LABEL: params_and_return_in_reg:
; CHECK-O0:       @ %bb.0:
; CHECK-O0-NEXT:    push	{r7, r10, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #76
; CHECK-O0-NEXT:    bfc	sp, #0, #3
; CHECK-O0-NEXT:    str	r8, [sp, #24] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r10, [sp, #4] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r3, [sp, #20] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r2, [sp, #16] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r1, [sp, #12] @ 4-byte Spill
; CHECK-O0-NEXT:    str	r0, [sp, #8] @ 4-byte Spill
; CHECK-O0-NEXT:    @ implicit-def: $r0
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    str	r8, [sp, #28] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r0, #1
; CHECK-O0-NEXT:    str	r0, [sp, #32] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r1, #2
; CHECK-O0-NEXT:    str	r1, [sp, #36] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r2, #3
; CHECK-O0-NEXT:    str	r2, [sp, #40] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r3, #4
; CHECK-O0-NEXT:    str	r3, [sp, #44] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r10, r8
; CHECK-O0-NEXT:    bl	_params_in_reg2
; CHECK-O0-NEXT:    ldr	r10, [sp, #4] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r0, [sp, #8] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r1, [sp, #12] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r2, [sp, #16] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r3, [sp, #20] @ 4-byte Reload
; CHECK-O0-NEXT:    mov	r9, r8
; CHECK-O0-NEXT:    ldr	r8, [sp, #24] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #48] @ 4-byte Spill
; CHECK-O0-NEXT:    bl	_params_and_return_in_reg2
; CHECK-O0-NEXT:    ldr	r10, [sp, #28] @ 4-byte Reload
; CHECK-O0-NEXT:    mov	r9, r0
; CHECK-O0-NEXT:    ldr	r0, [sp, #32] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #52] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r9, r1
; CHECK-O0-NEXT:    ldr	r1, [sp, #36] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #56] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r9, r2
; CHECK-O0-NEXT:    ldr	r2, [sp, #40] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #60] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r9, r3
; CHECK-O0-NEXT:    ldr	r3, [sp, #44] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #64] @ 4-byte Spill
; CHECK-O0-NEXT:    mov	r9, r8
; CHECK-O0-NEXT:    ldr	r8, [sp, #48] @ 4-byte Reload
; CHECK-O0-NEXT:    str	r9, [sp, #68] @ 4-byte Spill
; CHECK-O0-NEXT:    bl	_params_in_reg2
; CHECK-O0-NEXT:    ldr	r0, [sp, #52] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r1, [sp, #56] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r2, [sp, #60] @ 4-byte Reload
; CHECK-O0-NEXT:    ldr	r3, [sp, #64] @ 4-byte Reload
; CHECK-O0-NEXT:    mov	r9, r8
; CHECK-O0-NEXT:    ldr	r8, [sp, #68] @ 4-byte Reload
; CHECK-O0-NEXT:    sub	sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r10, pc}
;
; CHECK-ANDROID-LABEL: params_and_return_in_reg:
; CHECK-ANDROID:       @ %bb.0:
; CHECK-ANDROID-NEXT:    .save {r4, r5, r6, r7, r9, r10, r11, lr}
; CHECK-ANDROID-NEXT:    push {r4, r5, r6, r7, r9, r10, r11, lr}
; CHECK-ANDROID-NEXT:    .pad #16
; CHECK-ANDROID-NEXT:    sub sp, sp, #16
; CHECK-ANDROID-NEXT:    str r8, [sp, #4] @ 4-byte Spill
; CHECK-ANDROID-NEXT:    mov r11, r10
; CHECK-ANDROID-NEXT:    mov r6, r3
; CHECK-ANDROID-NEXT:    mov r7, r2
; CHECK-ANDROID-NEXT:    mov r4, r1
; CHECK-ANDROID-NEXT:    mov r5, r0
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    mov r1, #2
; CHECK-ANDROID-NEXT:    mov r2, #3
; CHECK-ANDROID-NEXT:    mov r3, #4
; CHECK-ANDROID-NEXT:    mov r10, #0
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    bl params_in_reg2
; CHECK-ANDROID-NEXT:    mov r9, r8
; CHECK-ANDROID-NEXT:    ldr r8, [sp, #4] @ 4-byte Reload
; CHECK-ANDROID-NEXT:    mov r0, r5
; CHECK-ANDROID-NEXT:    mov r1, r4
; CHECK-ANDROID-NEXT:    mov r2, r7
; CHECK-ANDROID-NEXT:    mov r3, r6
; CHECK-ANDROID-NEXT:    mov r10, r11
; CHECK-ANDROID-NEXT:    bl params_and_return_in_reg2
; CHECK-ANDROID-NEXT:    mov r4, r0
; CHECK-ANDROID-NEXT:    mov r5, r1
; CHECK-ANDROID-NEXT:    mov r6, r2
; CHECK-ANDROID-NEXT:    mov r7, r3
; CHECK-ANDROID-NEXT:    mov r11, r8
; CHECK-ANDROID-NEXT:    mov r0, #1
; CHECK-ANDROID-NEXT:    mov r1, #2
; CHECK-ANDROID-NEXT:    mov r2, #3
; CHECK-ANDROID-NEXT:    mov r3, #4
; CHECK-ANDROID-NEXT:    mov r10, #0
; CHECK-ANDROID-NEXT:    mov r8, r9
; CHECK-ANDROID-NEXT:    bl params_in_reg2
; CHECK-ANDROID-NEXT:    mov r0, r4
; CHECK-ANDROID-NEXT:    mov r1, r5
; CHECK-ANDROID-NEXT:    mov r2, r6
; CHECK-ANDROID-NEXT:    mov r3, r7
; CHECK-ANDROID-NEXT:    mov r8, r11
; CHECK-ANDROID-NEXT:    add sp, sp, #16
; CHECK-ANDROID-NEXT:    pop {r4, r5, r6, r7, r9, r10, r11, pc}
  %error_ptr_ref = alloca swifterror ptr, align 8
  store ptr null, ptr %error_ptr_ref
  call swiftcc void @params_in_reg2(i32 1, i32 2, i32 3, i32 4, ptr swiftself null, ptr nocapture swifterror %error_ptr_ref)
  %val = call swiftcc  { i32, i32, i32, i32 } @params_and_return_in_reg2(i32 %0, i32 %1, i32 %2, i32 %3, ptr swiftself %4, ptr nocapture swifterror %err)
  call swiftcc void @params_in_reg2(i32 1, i32 2, i32 3, i32 4, ptr swiftself null, ptr nocapture swifterror %error_ptr_ref)
  ret { i32, i32, i32, i32 }%val
}

declare swiftcc { i32, i32, i32, i32 } @params_and_return_in_reg2(i32, i32, i32, i32, ptr swiftself, ptr nocapture swifterror %err)


declare void @acallee(ptr)

; Make sure we don't tail call if the caller returns a swifterror value. We
; would have to move into the swifterror register before the tail call.
define swiftcc void @tailcall_from_swifterror(ptr swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: tailcall_from_swifterror:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r4, lr}
; CHECK-APPLE-NEXT:    mov r0, #0
; CHECK-APPLE-NEXT:    mov r4, r8
; CHECK-APPLE-NEXT:    bl _acallee
; CHECK-APPLE-NEXT:    mov r8, r4
; CHECK-APPLE-NEXT:    pop {r4, pc}
;
; CHECK-O0-LABEL: tailcall_from_swifterror:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push {r7, lr}
; CHECK-O0-NEXT:    mov r7, sp
; CHECK-O0-NEXT:    sub sp, sp, #4
; CHECK-O0-NEXT:    str r8, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:    mov r0, #0
; CHECK-O0-NEXT:    bl _acallee
; CHECK-O0-NEXT:    ldr r8, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    mov sp, r7
; CHECK-O0-NEXT:    pop {r7, pc}
;
; CHECK-ANDROID-LABEL: tailcall_from_swifterror:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r4, lr}
; CHECK-ANDROID-NEXT:    push {r4, lr}
; CHECK-ANDROID-NEXT:    mov r0, #0
; CHECK-ANDROID-NEXT:    mov r4, r8
; CHECK-ANDROID-NEXT:    bl acallee
; CHECK-ANDROID-NEXT:    mov r8, r4
; CHECK-ANDROID-NEXT:    pop {r4, pc}
entry:
  tail call void @acallee(ptr null)
  ret void
}


declare swiftcc void @foo2(ptr swifterror)

; Make sure we properly assign registers during fast-isel.
define swiftcc ptr @testAssign(ptr %error_ref) {
; CHECK-APPLE-LABEL: testAssign:
; CHECK-APPLE:       @ %bb.0: @ %entry
; CHECK-APPLE-NEXT:    push {r8, lr}
; CHECK-APPLE-NEXT:    sub sp, sp, #4
; CHECK-APPLE-NEXT:    mov r8, #0
; CHECK-APPLE-NEXT:    bl _foo2
; CHECK-APPLE-NEXT:    mov r0, r8
; CHECK-APPLE-NEXT:    add sp, sp, #4
; CHECK-APPLE-NEXT:    pop {r8, pc}
;
; CHECK-O0-LABEL: testAssign:
; CHECK-O0:       @ %bb.0: @ %entry
; CHECK-O0-NEXT:    push	{r7, r8, lr}
; CHECK-O0-NEXT:    add	r7, sp, #4
; CHECK-O0-NEXT:    sub	sp, sp, #8
; CHECK-O0-NEXT:    @ implicit-def: $r1
; CHECK-O0-NEXT:    mov	r8, #0
; CHECK-O0-NEXT:    bl	_foo2
; CHECK-O0-NEXT:    str	r8, [sp] @ 4-byte Spill
; CHECK-O0-NEXT:  @ %bb.1: @ %a
; CHECK-O0-NEXT:    ldr r0, [sp] @ 4-byte Reload
; CHECK-O0-NEXT:    sub sp, r7, #4
; CHECK-O0-NEXT:    pop	{r7, r8, pc}
;
; CHECK-ANDROID-LABEL: testAssign:
; CHECK-ANDROID:       @ %bb.0: @ %entry
; CHECK-ANDROID-NEXT:    .save {r8, lr}
; CHECK-ANDROID-NEXT:    push {r8, lr}
; CHECK-ANDROID-NEXT:    .pad #8
; CHECK-ANDROID-NEXT:    sub sp, sp, #8
; CHECK-ANDROID-NEXT:    mov r8, #0
; CHECK-ANDROID-NEXT:    bl foo2
; CHECK-ANDROID-NEXT:    mov r0, r8
; CHECK-ANDROID-NEXT:    add sp, sp, #8
; CHECK-ANDROID-NEXT:    pop {r8, pc}
entry:
  %error_ptr = alloca swifterror ptr
  store ptr null, ptr %error_ptr
  call swiftcc void @foo2(ptr swifterror %error_ptr)
  br label %a

a:
  %error = load ptr, ptr %error_ptr
  ret ptr %error
}