# RUN: llc -mtriple=aarch64-apple-darwin -run-pass=aarch64-ldst-opt -verify-machineinstrs -o - %s | FileCheck %s
--- |
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64e-apple-ios13.0"
%struct.widget = type { i64, i64, i32, i32, i64, i64, i64, i64, i64, i32, i32, i32, i16, i32, %struct.snork*, %struct.zot, %struct.zot, %struct.zot, %struct.zot, %struct.zot, i64, i64, i64, i32, i64, i32, i32, i32, i8*, %struct.baz, %struct.baz, i64, i64, %struct.snork*, %struct.zot, i32, i32, i32, i32, i32, i32, i32, [32 x i8], i64, i64, %struct.wombat, i32, i64, i64, i64, i64 }
%struct.baz = type { [4 x i32] }
%struct.snork = type { i32, i32, [1 x %struct.spam] }
%struct.spam = type { %struct.baz, i32, i32 }
%struct.zot = type { i64, i64 }
%struct.wombat = type { [2 x i32] }
%struct.wombat.0 = type { [200 x i32] }
@__stack_chk_guard = external global i8*
; Function Attrs: noredzone ssp
define hidden void @with_noredzone_80bytes() #0 {
bb:
%StackGuardSlot = alloca i8*, align 8
%0 = call i8* @llvm.stackguard()
call void @llvm.stackprotector(i8* %0, i8** %StackGuardSlot)
%tmp = alloca %struct.widget, align 16
%tmp1 = alloca %struct.wombat.0*, align 8
%tmp2 = alloca %struct.wombat.0*, align 8
%tmp3 = alloca %struct.wombat.0*, align 8
%tmp4 = alloca %struct.wombat.0*, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp3, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp4, align 8
ret void
}
define hidden void @with_redzone_480bytes() #2 {
bb:
%StackGuardSlot = alloca i8*, align 8
%0 = call i8* @llvm.stackguard()
call void @llvm.stackprotector(i8* %0, i8** %StackGuardSlot)
%tmp = alloca %struct.widget, align 16
%tmp1 = alloca %struct.wombat.0*, align 8
%tmp2 = alloca %struct.wombat.0*, align 8
%tmp3 = alloca %struct.wombat.0*, align 8
%tmp4 = alloca %struct.wombat.0*, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp3, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp4, align 8
ret void
}
define hidden void @with_noredzone_no_mem_between() #0 {
bb:
%StackGuardSlot = alloca i8*, align 8
%0 = call i8* @llvm.stackguard()
call void @llvm.stackprotector(i8* %0, i8** %StackGuardSlot)
%tmp = alloca %struct.widget, align 16
%tmp1 = alloca %struct.wombat.0*, align 8
%tmp2 = alloca %struct.wombat.0*, align 8
%tmp3 = alloca %struct.wombat.0*, align 8
%tmp4 = alloca %struct.wombat.0*, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp3, align 8
store %struct.wombat.0* null, %struct.wombat.0** %tmp4, align 8
ret void
}
; Function Attrs: nofree nosync nounwind willreturn
declare i8* @llvm.stackguard() #1
; Function Attrs: nofree nosync nounwind willreturn
declare void @llvm.stackprotector(i8*, i8**) #1
attributes #0 = { noredzone ssp "frame-pointer"="non-leaf" }
attributes #1 = { nofree nosync nounwind willreturn }
attributes #2 = { ssp "frame-pointer"="non-leaf" }
...
# Check that we don't try to combine the SUB with the STP using pre-index addressing
# if the function does not have redzone enabled.
# CHECK-LABEL: name: with_noredzone_80bytes
# CHECK-NOT: STPXpre $xzr, $xzr
---
name: with_noredzone_80bytes
alignment: 4
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins: []
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 512
offsetAdjustment: 0
maxAlignment: 16
adjustsStack: true
hasCalls: true
stackProtector: '%stack.0.StackGuardSlot'
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 480
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: StackGuardSlot, type: default, offset: -40, size: 8,
alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -8, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 1, name: tmp, type: default, offset: -480, size: 440, alignment: 16,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -448, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 2, name: tmp1, type: default, offset: -488, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -456, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 3, name: tmp2, type: default, offset: -496, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -464, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 4, name: tmp3, type: default, offset: -504, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -472, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 5, name: tmp4, type: default, offset: -512, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -480, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 6, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 7, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 8, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x27', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 9, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x28', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
debugValueSubstitutions: []
constants: []
machineFunctionInfo:
hasRedZone: false
body: |
bb.0.bb:
successors: %bb.1(0x7ffff800), %bb.2(0x00000800)
liveins: $x27, $x28, $lr
early-clobber $sp = frame-setup STPXpre killed $x28, killed $x27, $sp, -4 :: (store (s64) into %stack.9), (store (s64) into %stack.8)
frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.7), (store (s64) into %stack.6)
$fp = frame-setup ADDXri $sp, 16, 0
$sp = frame-setup SUBXri $sp, 80, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 16
frame-setup CFI_INSTRUCTION offset $w30, -8
frame-setup CFI_INSTRUCTION offset $w29, -16
frame-setup CFI_INSTRUCTION offset $w27, -24
frame-setup CFI_INSTRUCTION offset $w28, -32
$x8 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
$x8 = LDRXui killed $x8, target-flags(aarch64-pageoff, aarch64-got, aarch64-nc) @__stack_chk_guard
$x8 = LDRXui killed $x8, 0 :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
STURXi killed renamable $x8, $fp, -24 :: (volatile store (s64) into %stack.0.StackGuardSlot)
STRXui $xzr, $sp, 1 :: (store (s64) into %ir.tmp3)
STRXui $xzr, $sp, 0 :: (store (s64) into %ir.tmp4)
renamable $x8 = LDURXi $fp, -24 :: (volatile load (s64) from %stack.0.StackGuardSlot)
$x9 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
$x9 = LDRXui killed $x9, target-flags(aarch64-pageoff, aarch64-got, aarch64-nc) @__stack_chk_guard
$x9 = LDRXui killed $x9, 0 :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
$xzr = SUBSXrs killed renamable $x9, killed renamable $x8, 0, implicit-def $nzcv, implicit-def $nzcv
Bcc 1, %bb.2, implicit $nzcv
bb.1.bb:
$sp = frame-destroy ADDXri $sp, 480, 0
$fp, $lr = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.7), (load (s64) from %stack.6)
early-clobber $sp, $x28, $x27 = frame-destroy LDPXpost $sp, 4 :: (load (s64) from %stack.9), (load (s64) from %stack.8)
RET undef $lr
bb.2.bb:
BL &__stack_chk_fail, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
...
# Check we don't try to fold a 480 byte offset, even if we have a 128 byte redzone.
# CHECK-LABEL: name: with_redzone_480bytes
# CHECK-NOT: STPXpre $xzr, $xzr
---
name: with_redzone_480bytes
alignment: 4
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins: []
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 512
offsetAdjustment: 0
maxAlignment: 16
adjustsStack: true
hasCalls: true
stackProtector: '%stack.0.StackGuardSlot'
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 480
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: StackGuardSlot, type: default, offset: -40, size: 8,
alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -8, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 1, name: tmp, type: default, offset: -480, size: 440, alignment: 16,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -448, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 2, name: tmp1, type: default, offset: -488, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -456, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 3, name: tmp2, type: default, offset: -496, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -464, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 4, name: tmp3, type: default, offset: -504, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -472, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 5, name: tmp4, type: default, offset: -512, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -480, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 6, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 7, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 8, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x27', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 9, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x28', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
debugValueSubstitutions: []
constants: []
body: |
bb.0.bb:
successors: %bb.1(0x7ffff800), %bb.2(0x00000800)
liveins: $x27, $x28, $lr
early-clobber $sp = frame-setup STPXpre killed $x28, killed $x27, $sp, -4 :: (store (s64) into %stack.9), (store (s64) into %stack.8)
frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.7), (store (s64) into %stack.6)
$fp = frame-setup ADDXri $sp, 16, 0
$sp = frame-setup SUBXri $sp, 480, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 16
frame-setup CFI_INSTRUCTION offset $w30, -8
frame-setup CFI_INSTRUCTION offset $w29, -16
frame-setup CFI_INSTRUCTION offset $w27, -24
frame-setup CFI_INSTRUCTION offset $w28, -32
$x8 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
$x8 = LDRXui killed $x8, target-flags(aarch64-pageoff, aarch64-got, aarch64-nc) @__stack_chk_guard
$x8 = LDRXui killed $x8, 0 :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
STURXi killed renamable $x8, $fp, -24 :: (volatile store (s64) into %stack.0.StackGuardSlot)
STRXui $xzr, $sp, 1 :: (store (s64) into %ir.tmp3)
STRXui $xzr, $sp, 0 :: (store (s64) into %ir.tmp4)
renamable $x8 = LDURXi $fp, -24 :: (volatile load (s64) from %stack.0.StackGuardSlot)
$x9 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
$x9 = LDRXui killed $x9, target-flags(aarch64-pageoff, aarch64-got, aarch64-nc) @__stack_chk_guard
$x9 = LDRXui killed $x9, 0 :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
$xzr = SUBSXrs killed renamable $x9, killed renamable $x8, 0, implicit-def $nzcv, implicit-def $nzcv
Bcc 1, %bb.2, implicit $nzcv
bb.1.bb:
$sp = frame-destroy ADDXri $sp, 480, 0
$fp, $lr = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.7), (load (s64) from %stack.6)
early-clobber $sp, $x28, $x27 = frame-destroy LDPXpost $sp, 4 :: (load (s64) from %stack.9), (load (s64) from %stack.8)
RET undef $lr
bb.2.bb:
BL &__stack_chk_fail, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
...
# Check we still do the opt if there are no mem ops between.
# CHECK-LABEL: name: with_noredzone_no_mem_between
# CHECK: STPXpre $xzr, $xzr
---
name: with_noredzone_no_mem_between
alignment: 4
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins: []
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 512
offsetAdjustment: 0
maxAlignment: 16
adjustsStack: true
hasCalls: true
stackProtector: '%stack.0.StackGuardSlot'
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 480
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: StackGuardSlot, type: default, offset: -40, size: 8,
alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -8, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 1, name: tmp, type: default, offset: -480, size: 440, alignment: 16,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -448, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 2, name: tmp1, type: default, offset: -488, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -456, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 3, name: tmp2, type: default, offset: -496, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -464, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 4, name: tmp3, type: default, offset: -504, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -472, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 5, name: tmp4, type: default, offset: -512, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -480, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 6, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 7, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 8, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x27', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 9, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$x28', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
debugValueSubstitutions: []
constants: []
machineFunctionInfo:
hasRedZone: false
body: |
bb.0.bb:
successors: %bb.1(0x7ffff800), %bb.2(0x00000800)
liveins: $x27, $x28, $lr
early-clobber $sp = frame-setup STPXpre killed $x28, killed $x27, $sp, -4 :: (store (s64) into %stack.9), (store (s64) into %stack.8)
frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.7), (store (s64) into %stack.6)
$fp = frame-setup ADDXri $sp, 16, 0
$sp = frame-setup SUBXri $sp, 480, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 16
frame-setup CFI_INSTRUCTION offset $w30, -8
frame-setup CFI_INSTRUCTION offset $w29, -16
frame-setup CFI_INSTRUCTION offset $w27, -24
frame-setup CFI_INSTRUCTION offset $w28, -32
$x8 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
STRXui $xzr, $sp, 1 :: (store (s64) into %ir.tmp3)
STRXui $xzr, $sp, 0 :: (store (s64) into %ir.tmp4)
renamable $x8 = LDURXi $fp, -24 :: (volatile load (s64) from %stack.0.StackGuardSlot)
$x9 = ADRP target-flags(aarch64-page, aarch64-got) @__stack_chk_guard
$x9 = LDRXui killed $x9, target-flags(aarch64-pageoff, aarch64-got, aarch64-nc) @__stack_chk_guard
$x9 = LDRXui killed $x9, 0 :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
$xzr = SUBSXrs killed renamable $x9, killed renamable $x8, 0, implicit-def $nzcv, implicit-def $nzcv
Bcc 1, %bb.2, implicit $nzcv
bb.1.bb:
$sp = frame-destroy ADDXri $sp, 480, 0
$fp, $lr = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.7), (load (s64) from %stack.6)
early-clobber $sp, $x28, $x27 = frame-destroy LDPXpost $sp, 4 :: (load (s64) from %stack.9), (load (s64) from %stack.8)
RET undef $lr
bb.2.bb:
BL &__stack_chk_fail, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
...