| # RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \ |
| # RUN: -stop-after=prologepilog | FileCheck %s |
| # Check multiple epilogues, save_reg, save_reg_x. |
| |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -4 |
| # CHECK-NEXT: frame-setup SEH_SaveFPLR_X -32 |
| # CHECK-NEXT: frame-setup STRXui killed $x19, $sp, 2 |
| # CHECK-NEXT: frame-setup SEH_SaveReg 19, 16 |
| # CHECK-NEXT: $sp = frame-setup SUBXri $sp, 496, 0 |
| # CHECK-NEXT: frame-setup SEH_StackAlloc 496 |
| # CHECK-NEXT: frame-setup SEH_PrologEnd |
| |
| # CHECK-LABEL: bb.1.if.then: |
| # CHECK: frame-destroy SEH_EpilogStart |
| # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 496, 0 |
| # CHECK-NEXT: frame-destroy SEH_StackAlloc 496 |
| # CHECK-NEXT: $x19 = frame-destroy LDRXui $sp, 2 |
| # CHECK-NEXT: frame-destroy SEH_SaveReg 19, 16 |
| # CHECK-NEXT: early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 4 |
| # CHECK-NEXT: frame-destroy SEH_SaveFPLR_X -32 |
| # CHECK-NEXT: frame-destroy SEH_EpilogEnd |
| # CHECK-NEXT: TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp |
| |
| |
| --- | |
| 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" |
| |
| define dso_local i32 @"?func@@YAHH@Z"(i32 %i) local_unnamed_addr #0 { |
| entry: |
| %B = alloca [123 x i32], align 4 |
| %call = tail call i32 @"?func2@@YAHXZ"() |
| %cmp = icmp sgt i32 %i, 2 |
| br i1 %cmp, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| %call1 = tail call i32 @"?func2@@YAHXZ"() |
| ret i32 %call1 |
| |
| if.else: ; preds = %entry |
| %0 = bitcast [123 x i32]* %B to i8* |
| call void @llvm.lifetime.start.p0i8(i64 492, i8* nonnull %0) #3 |
| %arraydecay7 = bitcast [123 x i32]* %B to i32* |
| %call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* nonnull %arraydecay7) |
| call void @llvm.lifetime.end.p0i8(i64 492, i8* nonnull %0) #3 |
| ret i32 %call2 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 |
| |
| declare dso_local i32 @"?func2@@YAHXZ"() local_unnamed_addr #2 |
| |
| declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) local_unnamed_addr #2 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) #3 |
| |
| attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "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 = { argmemonly nounwind } |
| attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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 #3 = { nounwind } |
| |
| ... |
| --- |
| name: '?func@@YAHH@Z' |
| alignment: 2 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| failedISel: false |
| tracksRegLiveness: true |
| hasWinCFI: false |
| registers: |
| liveins: |
| - { reg: '$w0', virtual-reg: '' } |
| 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 |
| localFrameSize: 492 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: |
| stack: |
| - { id: 0, name: B, type: default, offset: 0, size: 492, alignment: 4, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -492, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| constants: |
| body: | |
| bb.0.entry: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $w0 |
| |
| renamable $w19 = COPY $w0 |
| ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp |
| BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0 |
| ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp |
| dead $wzr = SUBSWri killed renamable $w19, 3, 0, implicit-def $nzcv |
| Bcc 11, %bb.2, implicit killed $nzcv |
| B %bb.1 |
| |
| bb.1.if.then: |
| TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp |
| |
| bb.2.if.else: |
| ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp |
| $x0 = ADDXri %stack.0.B, 0, 0 |
| BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp, implicit-def $w0 |
| ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp |
| RET_ReallyLR implicit $w0 |
| |
| ... |