| # RUN: llc -mtriple=arm-linux-unknown-gnueabi -run-pass none -o - %s | FileCheck %s |
| |
| --- | |
| declare void @dummy_use(i32*, i32) |
| |
| define void @test_basic() #0 { |
| entry: |
| %mem = alloca i32, i32 10 |
| call void @dummy_use(i32* %mem, i32 10) |
| ret void |
| } |
| |
| attributes #0 = { "split-stack" } |
| ... |
| --- |
| name: test_basic |
| tracksRegLiveness: true |
| frameInfo: |
| stackSize: 48 |
| maxAlignment: 4 |
| adjustsStack: true |
| hasCalls: true |
| stack: |
| - { id: 0, name: mem, offset: -48, size: 40, alignment: 4 } |
| - { id: 1, type: spill-slot, offset: -4, size: 4, alignment: 4, |
| callee-saved-register: '%lr' } |
| - { id: 2, type: spill-slot, offset: -8, size: 4, alignment: 4, |
| callee-saved-register: '%r11' } |
| body: | |
| bb.0: |
| successors: %bb.2, %bb.1 |
| liveins: %r11, %lr |
| |
| %sp = STMDB_UPD %sp, 14, _, %r4, %r5 |
| CFI_INSTRUCTION def_cfa_offset 8 |
| CFI_INSTRUCTION offset %r5, -4 |
| CFI_INSTRUCTION offset %r4, -8 |
| %r5 = MOVr %sp, 14, _, _ |
| %r4 = MRC 15, 0, 13, 0, 3, 14, _ |
| %r4 = LDRi12 %r4, 4, 14, _ |
| CMPrr %r4, %r5, 14, _, implicit-def %cpsr |
| Bcc %bb.2, 3, %cpsr |
| |
| bb.1: |
| successors: %bb.2 |
| liveins: %r11, %lr |
| |
| %r4 = MOVi 48, 14, _, _ |
| %r5 = MOVi 0, 14, _, _ |
| %sp = STMDB_UPD %sp, 14, _, %lr |
| CFI_INSTRUCTION def_cfa_offset 12 |
| CFI_INSTRUCTION offset %lr, -12 |
| BL $__morestack, implicit-def %lr, implicit %sp |
| %sp = LDMIA_UPD %sp, 14, _, %lr |
| %sp = LDMIA_UPD %sp, 14, _, %r4, %r5 |
| CFI_INSTRUCTION def_cfa_offset 0 |
| BX_RET 14, _ |
| |
| bb.2: |
| liveins: %r11, %lr |
| |
| %sp = LDMIA_UPD %sp, 14, _, %r4, %r5 |
| CFI_INSTRUCTION def_cfa_offset 0 |
| ; CHECK: CFI_INSTRUCTION same_value %r4 |
| ; CHECK-NEXT: CFI_INSTRUCTION same_value %r5 |
| CFI_INSTRUCTION same_value %r4 |
| CFI_INSTRUCTION same_value %r5 |
| %sp = frame-setup STMDB_UPD %sp, 14, _, killed %r11, killed %lr |
| frame-setup CFI_INSTRUCTION def_cfa_offset 8 |
| frame-setup CFI_INSTRUCTION offset %lr, -4 |
| frame-setup CFI_INSTRUCTION offset %r11, -8 |
| %sp = frame-setup SUBri killed %sp, 40, 14, _, _ |
| frame-setup CFI_INSTRUCTION def_cfa_offset 48 |
| %r0 = MOVr %sp, 14, _, _ |
| %r1 = MOVi 10, 14, _, _ |
| BL @dummy_use, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit %r0, implicit killed %r1, implicit-def %sp |
| %sp = ADDri killed %sp, 40, 14, _, _ |
| %sp = LDMIA_UPD %sp, 14, _, %r4, %r5 |
| MOVPCLR 14, _ |
| ... |