| # RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \ |
| # RUN: -stop-after=prologepilog | FileCheck %s |
| # Test that stack probe results in Nop unwind codes in the prologue. Test |
| # save_fplr, save_reg_x and stack_alloc with multiple updates. |
| |
| # CHECK: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2 |
| # CHECK-NEXT: frame-setup SEH_SaveFPLR_X -16 |
| # CHECK-NEXT: $x15 = frame-setup MOVZXi 56009, 0 |
| # CHECK-NEXT: frame-setup SEH_Nop |
| # CHECK-NEXT: $x15 = frame-setup MOVKXi $x15, 2, 16 |
| # CHECK-NEXT: frame-setup SEH_Nop |
| # CHECK-NEXT: frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15 |
| # CHECK-NEXT: frame-setup SEH_Nop |
| # CHECK-NEXT: $sp = frame-setup SUBXrx64 killed $sp, killed $x15, 28 |
| # CHECK-NEXT: frame-setup SEH_StackAlloc 2993296 |
| # CHECK-NEXT: frame-setup SEH_PrologEnd |
| # CHECK: frame-destroy SEH_EpilogStart |
| # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 730, 12 |
| # CHECK-NEXT: frame-destroy SEH_StackAlloc 2990080 |
| # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 3216, 0 |
| # CHECK-NEXT: frame-destroy SEH_StackAlloc 3216 |
| # CHECK-NEXT: early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2 |
| # CHECK-NEXT: frame-destroy SEH_SaveFPLR_X -16 |
| # CHECK-NEXT: frame-destroy SEH_EpilogEnd |
| # CHECK-NEXT: RET_ReallyLR implicit killed $w0 |
| --- | |
| 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" "min-legal-vector-width"="0" "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 } |
| |
| ... |
| --- |
| name: '?func@@YAHH@Z' |
| alignment: 4 |
| exposesReturnsTwice: false |
| legalized: true |
| regBankSelected: true |
| selected: true |
| failedISel: false |
| tracksRegLiveness: true |
| hasWinCFI: false |
| registers: |
| liveins: |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 0 |
| offsetAdjustment: 0 |
| maxAlignment: 8 |
| adjustsStack: true |
| hasCalls: true |
| stackProtector: '' |
| maxCallFrameSize: 0 |
| cvBytesOfCalleeSavedRegisters: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| localFrameSize: 2993276 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: |
| stack: |
| - { id: 0, name: retval, 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: '' } |
| - { id: 1, name: i.addr, type: default, offset: 0, 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: 0, 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: 0, 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: 0, 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: 0, 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: 0, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '', 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 |
| |
| renamable $x8 = ADDXri %stack.1.i.addr, 0, 0 |
| renamable $w9 = MOVi32imm 2 |
| STRWui killed renamable $w0, renamable $x8, 0 :: (store 4 into %ir.i.addr) |
| renamable $w0 = LDRWui renamable $x8, 0 :: (load 4 from %ir.i.addr) |
| renamable $w0 = ADDWri killed renamable $w0, 2, 0 |
| STRWui killed renamable $w0, %stack.3.a, 0 :: (store 4 into %ir.a) |
| ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp |
| STRXui killed $x8, %stack.5, 0 :: (store 8 into %stack.5) |
| STRWui killed $w9, %stack.6, 0 :: (store 4 into %stack.6) |
| BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0 |
| ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp |
| $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) |
| renamable $w9 = LDRWui killed renamable $x8, 0 :: (load 4 from %ir.i.addr) |
| $w10 = LDRWui %stack.6, 0 :: (load 4 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) |
| |
| ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp |
| BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0 |
| ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp |
| $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) |
| STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval) |
| B %bb.4 |
| |
| bb.3.if.else: |
| successors: %bb.4(0x80000000) |
| |
| renamable $x8 = ADDXri %stack.4.B, 0, 0 |
| ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp |
| $x0 = COPY killed renamable $x8 |
| BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $x0, implicit-def $w0 |
| ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp |
| $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) |
| STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval) |
| |
| bb.4.return: |
| $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) |
| renamable $w0 = LDRWui killed renamable $x8, 1 :: (load 4 from %ir.retval) |
| RET_ReallyLR implicit killed $w0 |
| |
| ... |
