test/CodeGen/ARM/stack_frame_offset.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -run-pass=prologepilog %s -o - | FileCheck %s

--- |
  target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
  target triple = "thumbv7m-none-eabi"

  define i32 @testpos() {
  entry:
    %a = alloca i32, align 4
    call void @other(ptr %a)
    %b = load i32, ptr %a, align 4
    ret i32 %b
  }
  define i32 @testneg4() {
  entry:
    %a = alloca i32, align 4
    call void @other(ptr %a)
    %b = load i32, ptr %a, align 4
    ret i32 %b
  }
  define i32 @testneg8() {
  entry:
    %a = alloca i32, align 4
    call void @other(ptr %a)
    %b = load i32, ptr %a, align 4
    ret i32 %b
  }

  declare void @other(ptr)

...
---
name:            testpos
tracksRegLiveness: true
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  4
  savePoint:       ''
  restorePoint:    ''
stack:
  - { id: 0, name: a, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      local-offset: -4, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: testpos
    ; CHECK: liveins: $r7, $lr
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r7, killed $lr
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -4
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $r7, -8
    ; CHECK-NEXT: $sp = frame-setup tSUBspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 16
    ; CHECK-NEXT: renamable $r0 = t2ADDri $sp, 4, 14 /* CC::al */, $noreg, $noreg
    ; CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ; CHECK-NEXT: renamable $r0 = t2LDRi12 $sp, 8, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    ; CHECK-NEXT: $sp = frame-destroy tADDspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: $sp = frame-destroy t2LDMIA_RET $sp, 14 /* CC::al */, $noreg, def $r7, def $pc, implicit $r0
    ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2ADDri %stack.0.a, 0, 14 /* CC::al */, $noreg, $noreg
    tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ADJCALLSTACKUP 0, -1, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2LDRi12 %stack.0.a, 4, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...
---
name:            testneg4
tracksRegLiveness: true
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  4
  savePoint:       ''
  restorePoint:    ''
stack:
  - { id: 0, name: a, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      local-offset: -4, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: testneg4
    ; CHECK: liveins: $r7, $lr
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r7, killed $lr
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -4
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $r7, -8
    ; CHECK-NEXT: $sp = frame-setup tSUBspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 16
    ; CHECK-NEXT: renamable $r0 = t2ADDri $sp, 4, 14 /* CC::al */, $noreg, $noreg
    ; CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ; CHECK-NEXT: renamable $r0 = t2LDRi12 $sp, 0, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    ; CHECK-NEXT: $sp = frame-destroy tADDspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: $sp = frame-destroy t2LDMIA_RET $sp, 14 /* CC::al */, $noreg, def $r7, def $pc, implicit $r0
    ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2ADDri %stack.0.a, 0, 14 /* CC::al */, $noreg, $noreg
    tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ADJCALLSTACKUP 0, -1, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2LDRi8 %stack.0.a, -4, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...
---
name:            testneg8
tracksRegLiveness: true
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  4
  savePoint:       ''
  restorePoint:    ''
stack:
  - { id: 0, name: a, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      local-offset: -4, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: testneg8
    ; CHECK: liveins: $r7, $lr
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r7, killed $lr
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -4
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $r7, -8
    ; CHECK-NEXT: $sp = frame-setup tSUBspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 16
    ; CHECK-NEXT: renamable $r0 = t2ADDri $sp, 4, 14 /* CC::al */, $noreg, $noreg
    ; CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ; CHECK-NEXT: renamable $r0 = t2LDRi8 $sp, -4, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    ; CHECK-NEXT: $sp = frame-destroy tADDspi $sp, 2, 14 /* CC::al */, $noreg
    ; CHECK-NEXT: $sp = frame-destroy t2LDMIA_RET $sp, 14 /* CC::al */, $noreg, def $r7, def $pc, implicit $r0
    ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2ADDri %stack.0.a, 0, 14 /* CC::al */, $noreg, $noreg
    tBL 14 /* CC::al */, $noreg, @other, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp
    ADJCALLSTACKUP 0, -1, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    renamable $r0 = t2LDRi8 %stack.0.a, -8, 14 /* CC::al */, $noreg :: (dereferenceable load (s32) from %ir.a)
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...