1# RUN: llc -mtriple=arm-linux-unknown-gnueabi -run-pass none -o - %s | FileCheck %s
2
3--- |
4  declare void @dummy_use(i32*, i32)
5
6  define void @test_basic() #0 {
7  entry:
8    %mem = alloca i32, i32 10
9    call void @dummy_use(i32* %mem, i32 10)
10    ret void
11  }
12
13  attributes #0 = { "split-stack" }
14...
15---
16name:            test_basic
17tracksRegLiveness: true
18frameInfo:
19  stackSize:       48
20  maxAlignment:    4
21  adjustsStack:    true
22  hasCalls:        true
23stack:
24  - { id: 0, name: mem, offset: -48, size: 40, alignment: 4 }
25  - { id: 1, type: spill-slot, offset: -4, size: 4, alignment: 4,
26      callee-saved-register: '$lr' }
27  - { id: 2, type: spill-slot, offset: -8, size: 4, alignment: 4,
28      callee-saved-register: '$r11' }
29body: |
30  bb.0:
31    successors: %bb.2, %bb.1
32    liveins: $r11, $lr
33
34    $sp = STMDB_UPD $sp, 14, _, $r4, $r5
35    CFI_INSTRUCTION def_cfa_offset 8
36    CFI_INSTRUCTION offset $r5, -4
37    CFI_INSTRUCTION offset $r4, -8
38    $r5 = MOVr $sp, 14, _, _
39    $r4 = MRC 15, 0, 13, 0, 3, 14, _
40    $r4 = LDRi12 $r4, 4, 14, _
41    CMPrr $r4, $r5, 14, _, implicit-def $cpsr
42    Bcc %bb.2, 3, $cpsr
43
44  bb.1:
45    successors: %bb.2
46    liveins: $r11, $lr
47
48    $r4 = MOVi 48, 14, _, _
49    $r5 = MOVi 0, 14, _, _
50    $sp = STMDB_UPD $sp, 14, _, $lr
51    CFI_INSTRUCTION def_cfa_offset 12
52    CFI_INSTRUCTION offset $lr, -12
53    BL &__morestack, implicit-def $lr, implicit $sp
54    $sp = LDMIA_UPD $sp, 14, _, $lr
55    $sp = LDMIA_UPD $sp, 14, _, $r4, $r5
56    CFI_INSTRUCTION def_cfa_offset 0
57    BX_RET 14, _
58
59  bb.2:
60    liveins: $r11, $lr
61
62    $sp = LDMIA_UPD $sp, 14, _, $r4, $r5
63    CFI_INSTRUCTION def_cfa_offset 0
64  ; CHECK:      CFI_INSTRUCTION same_value $r4
65  ; CHECK-NEXT: CFI_INSTRUCTION same_value $r5
66    CFI_INSTRUCTION same_value $r4
67    CFI_INSTRUCTION same_value $r5
68    $sp = frame-setup STMDB_UPD $sp, 14, _, killed $r11, killed $lr
69    frame-setup CFI_INSTRUCTION def_cfa_offset 8
70    frame-setup CFI_INSTRUCTION offset $lr, -4
71    frame-setup CFI_INSTRUCTION offset $r11, -8
72    $sp = frame-setup SUBri killed $sp, 40, 14, _, _
73    frame-setup CFI_INSTRUCTION def_cfa_offset 48
74    $r0 = MOVr $sp, 14, _, _
75    $r1 = MOVi 10, 14, _, _
76    BL @dummy_use, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit killed $r1, implicit-def $sp
77    $sp = ADDri killed $sp, 40, 14, _, _
78    $sp = LDMIA_UPD $sp, 14, _, $r4, $r5
79    MOVPCLR 14, _
80...
81