| # 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: $fp = frame-setup ADDXri $sp, 0, 0 |
| # CHECK-NEXT: frame-setup SEH_SetFP |
| # CHECK-NEXT: $sp = frame-setup SUBXri $sp, 32, 0 |
| # CHECK-NEXT: frame-setup SEH_StackAlloc 32 |
| # CHECK-NEXT: frame-setup SEH_PrologEnd |
| # CHECK: frame-destroy SEH_EpilogStart |
| # CHECK-NEXT: $sp = frame-destroy ADDXri $fp, 0, 0 |
| # CHECK-NEXT: frame-destroy SEH_SetFP |
| # 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@@YAHHHHH@Z"(i32 %n, i32 %idx, i32 %b, i32 %c) #0 { |
| entry: |
| %c.addr = alloca i32, align 4 |
| %b.addr = alloca i32, align 4 |
| %idx.addr = alloca i32, align 4 |
| %n.addr = alloca i32, align 4 |
| %a = alloca i32*, align 8 |
| store i32 %c, i32* %c.addr, align 4 |
| store i32 %b, i32* %b.addr, align 4 |
| store i32 %idx, i32* %idx.addr, align 4 |
| store i32 %n, i32* %n.addr, align 4 |
| %0 = load i32, i32* %n.addr, align 4 |
| %conv = sext i32 %0 to i64 |
| %1 = alloca i8, i64 %conv, align 16 |
| %2 = bitcast i8* %1 to i32* |
| store i32* %2, i32** %a, align 8 |
| %3 = load i32*, i32** %a, align 8 |
| call void @"?init@@YAXPEAH@Z"(i32* %3) |
| ret i32 0 |
| } |
| |
| declare dso_local void @"?init@@YAXPEAH@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@@YAHHHHH@Z' |
| alignment: 4 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| failedISel: false |
| tracksRegLiveness: true |
| hasWinCFI: false |
| registers: |
| liveins: |
| - { reg: '$w0', virtual-reg: '' } |
| - { reg: '$w1', virtual-reg: '' } |
| - { reg: '$w2', virtual-reg: '' } |
| - { reg: '$w3', virtual-reg: '' } |
| 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: 24 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: |
| stack: |
| - { id: 0, name: c.addr, 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: b.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: idx.addr, type: default, offset: 0, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -12, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| - { id: 3, name: n.addr, type: default, offset: 0, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -16, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| - { id: 4, name: a, type: default, offset: 0, size: 8, alignment: 8, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -24, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| - { id: 5, name: '', type: variable-sized, offset: 0, |
| alignment: 1, stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -24, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| - { id: 6, 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: '' } |
| constants: |
| body: | |
| bb.0.entry: |
| liveins: $w0, $w1, $w2, $w3 |
| |
| STRWui killed renamable $w3, %stack.0.c.addr, 0 :: (store 4 into %ir.c.addr) |
| STRWui killed renamable $w2, %stack.1.b.addr, 0 :: (store 4 into %ir.b.addr) |
| STRWui killed renamable $w1, %stack.2.idx.addr, 0 :: (store 4 into %ir.idx.addr) |
| STRWui killed renamable $w0, %stack.3.n.addr, 0 :: (store 4 into %ir.n.addr) |
| renamable $x8 = LDRSWui %stack.3.n.addr, 0 :: (dereferenceable load 4 from %ir.n.addr) |
| ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp |
| renamable $x8 = nuw ADDXri killed renamable $x8, 15, 0 |
| renamable $x8 = UBFMXri killed renamable $x8, 4, 63 |
| $x15 = COPY renamable $x8 |
| STRXui killed $x8, %stack.6, 0 :: (store 8 into %stack.6) |
| BL &__chkstk, csr_aarch64_stackprobe_windows, implicit-def dead $lr, implicit $sp, implicit killed $x15 |
| renamable $x8 = COPY $sp |
| $x15 = LDRXui %stack.6, 0 :: (load 8 from %stack.6) |
| renamable $x8 = SUBSXrs killed renamable $x8, killed renamable $x15, 4, implicit-def dead $nzcv |
| $sp = COPY renamable $x8 |
| ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp |
| STRXui killed renamable $x8, %stack.4.a, 0 :: (store 8 into %ir.a) |
| renamable $x0 = LDRXui %stack.4.a, 0 :: (dereferenceable load 8 from %ir.a) |
| ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp |
| BL @"?init@@YAXPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, implicit-def $sp |
| ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp |
| renamable $w1 = COPY $wzr |
| $w0 = COPY killed renamable $w1 |
| RET_ReallyLR implicit killed $w0 |
| |
| ... |