# RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog \
# RUN: -filetype=obj | llvm-readobj --unwind - | FileCheck %s
# Check that that the large stack allocation is correctly represented in .xdata.
# CHECK: ExceptionData {
# CHECK-NEXT: FunctionLength: 156
# CHECK-NEXT: Version: 0
# CHECK-NEXT: ExceptionData: No
# CHECK-NEXT: EpiloguePacked: Yes
# CHECK-NEXT: EpilogueOffset: 10
# CHECK-NEXT: ByteCodeLength: 20
# CHECK-NEXT: Prologue [
# CHECK-NEXT: 0xe002dac9 ; sub sp, #2993296
# CHECK-NEXT: 0xe3 ; nop
# CHECK-NEXT: 0xe3 ; nop
# CHECK-NEXT: 0x42 ; stp x29, x30, [sp, #16]
# CHECK-NEXT: 0xd53f ; str x28, [sp, #-256]!
# CHECK-NEXT: 0xe4 ; end
# CHECK-NEXT: ]
# CHECK-NEXT: Epilogue [
# CHECK-NEXT: 0xe002da00 ; add sp, #2990080
# CHECK-NEXT: 0xc0c9 ; add sp, #3216
# CHECK-NEXT: 0x42 ; ldp x29, x30, [sp, #16]
# CHECK-NEXT: 0xd53f ; ldr x28, [sp], #256
# CHECK-NEXT: 0xe4 ; end
# CHECK-NEXT: ]
# CHECK-NEXT: }
--- |
target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-windows-msvc19.11.0"
; Function Attrs: noinline optnone
define dso_local i32 @"?func@@YAHH@Z"(i32 %i) #0 {
entry:
%retval = alloca i32, align 4
%i.addr = alloca i32, align 4
%A = alloca [748193 x i32], align 4
%a = alloca i32, align 4
%B = alloca [123 x i32], align 4
store i32 %i, i32* %i.addr, align 4
%0 = load i32, i32* %i.addr, align 4
%add = add nsw i32 %0, 2
store i32 %add, i32* %a, align 4
%call = call i32 @"?func2@@YAHXZ"()
%1 = load i32, i32* %i.addr, align 4
%cmp = icmp sgt i32 %1, 2
br i1 %cmp, label %if.then, label %if.else
if.then: ; preds = %entry
%call1 = call i32 @"?func2@@YAHXZ"()
store i32 %call1, i32* %retval, align 4
br label %return
if.else: ; preds = %entry
%arraydecay = getelementptr inbounds [123 x i32], [123 x i32]* %B, i32 0, i32 0
%call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* %arraydecay)
store i32 %call2, i32* %retval, align 4
br label %return
return: ; preds = %if.else, %if.then
%2 = load i32, i32* %retval, align 4
ret i32 %2
}
declare dso_local i32 @"?func2@@YAHXZ"() #1
declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) #1
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #2
attributes #0 = { noinline optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind }
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"wchar_size", i32 2}
...
---
name: '?func@@YAHH@Z'
alignment: 4
exposesReturnsTwice: false
legalized: true
regBankSelected: true
selected: true
failedISel: false
tracksRegLiveness: true
hasWinCFI: true
registers:
liveins:
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 2993328
offsetAdjustment: 0
maxAlignment: 16
adjustsStack: true
hasCalls: true
stackProtector: ''
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 2993276
savePoint: ''
restorePoint: ''
fixedStack:
stack:
- { id: 0, name: retval, type: default, offset: -36, 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: '' }
- { id: 1, name: i.addr, type: default, offset: -40, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -8, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 2, name: A, type: default, offset: -2992812, size: 2992772, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -2992780, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 3, name: a, type: default, offset: -2992816, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -2992784, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 4, name: B, type: default, offset: -2993308, size: 492, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -2993276, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
- { id: 5, name: '', type: spill-slot, offset: -2993320, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 6, name: '', type: spill-slot, offset: -2993324, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 7, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 8, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 9, name: '', type: spill-slot, offset: -32, size: 8, alignment: 16,
stack-id: default, callee-saved-register: '$x28', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
constants:
body: |
bb.1.entry:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
liveins: $w0, $x28, $fp, $lr
early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32 :: (store (s64) into %stack.9)
frame-setup SEH_SaveReg_X 28, -256
frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.7), (store (s64) into %stack.8)
frame-setup SEH_SaveFPLR 16
$x15 = frame-setup MOVi64imm 187081
frame-setup SEH_Nop
frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15
frame-setup SEH_Nop
$sp = frame-setup SUBXrx64 killed $sp, killed $x15, 28
frame-setup SEH_StackAlloc 2993296
frame-setup SEH_PrologEnd
$x8 = ADDXri $sp, 730, 12
$x8 = ADDXri $x8, 3208, 0
renamable $w9 = MOVi32imm 2
STRWui killed renamable $w0, renamable $x8, 0 :: (store (s32) into %ir.i.addr)
renamable $w0 = LDRWui renamable $x8, 0 :: (load (s32) from %ir.i.addr)
renamable $w0 = ADDWri killed renamable $w0, 2, 0
STRWui killed renamable $w0, $sp, 128 :: (store (s32) into %ir.a)
STRXui killed $x8, $sp, 1 :: (store (s64) into %stack.5)
STRWui killed $w9, $sp, 1 :: (store (s32) into %stack.6)
BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
$x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
renamable $w9 = LDRWui killed renamable $x8, 0 :: (load (s32) from %ir.i.addr)
$w10 = LDRWui $sp, 1 :: (load (s32) from %stack.6)
$wzr = SUBSWrr killed renamable $w9, killed renamable $w10, implicit-def $nzcv
renamable $w9 = CSINCWr $wzr, $wzr, 13, implicit $nzcv
TBNZW killed renamable $w9, 0, %bb.2
B %bb.3
bb.2.if.then:
successors: %bb.4(0x80000000)
BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0
$x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
STRWui killed renamable $w0, killed renamable $x8, 1 :: (store (s32) into %ir.retval)
B %bb.4
bb.3.if.else:
successors: %bb.4(0x80000000)
$x8 = ADDXri $sp, 20, 0
$x0 = COPY killed renamable $x8
BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $x0, implicit-def $w0
$x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
STRWui killed renamable $w0, killed renamable $x8, 1 :: (store (s32) into %ir.retval)
bb.4.return:
$x8 = LDRXui $sp, 1 :: (load (s64) from %stack.5)
renamable $w0 = LDRWui killed renamable $x8, 1 :: (load (s32) from %ir.retval)
frame-destroy SEH_EpilogStart
$sp = frame-destroy ADDXri $sp, 730, 12
frame-destroy SEH_StackAlloc 2990080
$sp = frame-destroy ADDXri $sp, 3216, 0
frame-destroy SEH_StackAlloc 3216
$fp, $lr = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.7), (load (s64) from %stack.8)
frame-destroy SEH_SaveFPLR 16
early-clobber $sp, $x28 = frame-destroy LDRXpost $sp, 32 :: (load (s64) from %stack.9)
frame-destroy SEH_SaveReg_X 28, -256
frame-destroy SEH_EpilogEnd
RET_ReallyLR implicit killed $w0
...