1 # RUN: llc -mtriple=arm-linux-unknown-gnueabi -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
4 declare void @dummy_use(i32*, i32)
6 define void @test_basic() #0 {
8 %mem = alloca i32, i32 10
9 call void @dummy_use(i32* %mem, i32 10)
13 attributes #0 = { "split-stack" }
17 tracksRegLiveness: true
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' }
31 successors: %bb.2, %bb.1
34 %sp = STMDB_UPD %sp, 14, _, %r4, %r5
35 CFI_INSTRUCTION .cfi_def_cfa_offset 8
36 CFI_INSTRUCTION .cfi_offset %r5, -4
37 CFI_INSTRUCTION .cfi_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
48 %r4 = MOVi 48, 14, _, _
49 %r5 = MOVi 0, 14, _, _
50 %sp = STMDB_UPD %sp, 14, _, %lr
51 CFI_INSTRUCTION .cfi_def_cfa_offset 12
52 CFI_INSTRUCTION .cfi_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 .cfi_def_cfa_offset 0
62 %sp = LDMIA_UPD %sp, 14, _, %r4, %r5
63 CFI_INSTRUCTION .cfi_def_cfa_offset 0
64 ; CHECK: CFI_INSTRUCTION .cfi_same_value %r4
65 ; CHECK-NEXT: CFI_INSTRUCTION .cfi_same_value %r5
66 CFI_INSTRUCTION .cfi_same_value %r4
67 CFI_INSTRUCTION .cfi_same_value %r5
68 %sp = frame-setup STMDB_UPD %sp, 14, _, killed %r11, killed %lr
69 frame-setup CFI_INSTRUCTION .cfi_def_cfa_offset 8
70 frame-setup CFI_INSTRUCTION .cfi_offset %lr, -4
71 frame-setup CFI_INSTRUCTION .cfi_offset %r11, -8
72 %sp = frame-setup SUBri killed %sp, 40, 14, _, _
73 frame-setup CFI_INSTRUCTION .cfi_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