1; RUN: llc -mtriple=thumbv7m-none-macho %s -o - -relocation-model=pic -disable-fp-elim | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NON-FAST
2; RUN: llc -mtriple=thumbv7m-none-macho -O0 %s -o - -relocation-model=pic -disable-fp-elim | FileCheck %s
3; RUN: llc -mtriple=thumbv7m-none-macho -filetype=obj %s -o /dev/null
4
5@var = external global i32
6
7define i32 @test_litpool() minsize {
8; CHECK-LABEL: test_litpool:
9  %val = load i32, i32* @var
10  ret i32 %val
11
12  ; Lit-pool entries need to produce a "$non_lazy_ptr" version of the symbol.
13; CHECK: LCPI0_0:
14; CHECK-NEXT: .long L_var$non_lazy_ptr-(LPC0_0+4)
15}
16
17define i32 @test_movw_movt() {
18; CHECK-LABEL: test_movw_movt:
19  %val = load i32, i32* @var
20  ret i32 %val
21
22  ; movw/movt should also address their symbols MachO-style
23; CHECK: movw [[RTMP:r[0-9]+]], :lower16:(L_var$non_lazy_ptr-(LPC1_0+4))
24; CHECK: movt [[RTMP]], :upper16:(L_var$non_lazy_ptr-(LPC1_0+4))
25; CHECK: LPC1_0:
26; CHECK: add [[RTMP]], pc
27}
28
29declare void @llvm.trap()
30
31define void @test_trap() {
32; CHECK-LABEL: test_trap:
33
34  ; Bare-metal MachO gets compiled on top of normal MachO toolchain which
35  ; understands trap natively.
36  call void @llvm.trap()
37; CHECK: trap
38
39  ret void
40}
41
42define i32 @test_frame_ptr() {
43; CHECK-LABEL: test_frame_ptr:
44  call void @test_trap()
45
46  ; Frame pointer is r7.
47; CHECK: mov r7, sp
48  ret i32 42
49}
50
51%big_arr = type [8 x i32]
52define void @test_two_areas(%big_arr* %addr) {
53; CHECK-LABEL: test_two_areas:
54  %val = load %big_arr, %big_arr* %addr
55  call void @test_trap()
56  store %big_arr %val, %big_arr* %addr
57
58  ; This goes with the choice of r7 as FP (largely). FP and LR have to be stored
59  ; consecutively on the stack for the frame record to be valid, which means we
60  ; need the 2 register-save areas employed by iOS.
61; CHECK-NON-FAST: push {r4, r5, r6, r7, lr}
62; CHECK-NON-FAST: push.w {r8, r9, r10, r11}
63; ...
64; CHECK-NON-FAST: pop.w {r8, r9, r10, r11}
65; CHECK-NON-FAST: pop {r4, r5, r6, r7, pc}
66  ret void
67}
68
69define void @test_tail_call() {
70; CHECK-LABEL: test_tail_call:
71  tail call void @test_trap()
72
73  ; Tail calls should be available and use Thumb2 branch.
74; CHECK: b.w _test_trap
75  ret void
76}
77
78define float @test_softfloat_calls(float %in) {
79; CHECK-LABEL: test_softfloat_calls:
80  %sum = fadd float %in, %in
81
82  ; Soft-float calls should be GNU-style rather than RTABI and should not be the
83  ; *vfp variants used for ARMv6 iOS.
84; CHECK: bl ___addsf3{{$}}
85  ret float %sum
86}
87
88  ; Even bare-metal PIC needs GOT-like behaviour, in principle. Depends a bit on
89  ; the use-case of course, but LLVM doesn't know what that is.
90; CHECK: non_lazy_symbol_pointers
91; CHECK: L_var$non_lazy_ptr:
92; CHECK-NEXT:   .indirect_symbol _var
93
94  ; All MachO objects should have this to give the linker leeway in removing
95  ; dead code.
96; CHECK: .subsections_via_symbols
97