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llvm-project/llvm/test/CodeGen/ARM/stack_frame_offset.mir
Philip Reames 4d629f9744 [MIR] Remove std::variant from multiple save/restore point handling [nfc] (#153226) 
In review of bbde6b, I had originally proposed that we support the
legacy text format. As review evolved, it bacame clear this had been a
bad idea (too much complexity), but in order to let that patch finally
move forward, I approved the change with the variant. This change undoes
the variant, and updates all the tests to just use the array form.
2025-08-12 11:23:05 -07:00

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# 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
...
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