forked from OSchip/llvm-project
136 lines
5.4 KiB
Plaintext
136 lines
5.4 KiB
Plaintext
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# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \
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# RUN: -stop-after=prologepilog | FileCheck %s
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# Check multiple epilogues, save_reg, save_reg_x.
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# CHECK-LABEL: bb.0.entry:
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# CHECK: early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32
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# CHECK-NEXT: frame-setup SEH_SaveReg_X 28, -32
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# CHECK-NEXT: frame-setup STRXui killed $x19, $sp, 1
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# CHECK-NEXT: frame-setup SEH_SaveReg 19, 8
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# CHECK-NEXT: frame-setup STRXui killed $lr, $sp, 2
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# CHECK-NEXT: frame-setup SEH_SaveReg 30, 16
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# CHECK-NEXT: $sp = frame-setup SUBXri $sp, 496, 0
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# CHECK-NEXT: frame-setup SEH_StackAlloc 496
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# CHECK-NEXT: frame-setup SEH_PrologEnd
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# CHECK-LABEL: bb.1.if.then:
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# CHECK: frame-destroy SEH_EpilogStart
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# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 496, 0
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# CHECK-NEXT: frame-destroy SEH_StackAlloc 496
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# CHECK-NEXT: $lr = frame-destroy LDRXui $sp, 2
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# CHECK-NEXT: frame-destroy SEH_SaveReg 30, 16
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# CHECK-NEXT: $x19 = frame-destroy LDRXui $sp, 1
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# CHECK-NEXT: frame-destroy SEH_SaveReg 19, 8
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# CHECK-NEXT: early-clobber $sp, $x28 = frame-destroy LDRXpost $sp, 32
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# CHECK-NEXT: frame-destroy SEH_SaveReg_X 28, -32
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# CHECK-NEXT: frame-destroy SEH_EpilogEnd
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# CHECK-NEXT: TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp
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--- |
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target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-windows-msvc19.11.0"
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define dso_local i32 @"?func@@YAHH@Z"(i32 %i) local_unnamed_addr #0 {
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entry:
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%B = alloca [123 x i32], align 4
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%call = tail call i32 @"?func2@@YAHXZ"()
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%cmp = icmp sgt i32 %i, 2
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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%call1 = tail call i32 @"?func2@@YAHXZ"()
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ret i32 %call1
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if.else: ; preds = %entry
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%0 = bitcast [123 x i32]* %B to i8*
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call void @llvm.lifetime.start.p0i8(i64 492, i8* nonnull %0) #3
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%arraydecay7 = bitcast [123 x i32]* %B to i32*
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%call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* nonnull %arraydecay7)
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call void @llvm.lifetime.end.p0i8(i64 492, i8* nonnull %0) #3
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ret i32 %call2
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
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declare dso_local i32 @"?func2@@YAHXZ"() local_unnamed_addr #2
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declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) local_unnamed_addr #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #3
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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" }
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attributes #1 = { argmemonly nounwind }
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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" }
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attributes #3 = { nounwind }
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...
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---
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name: '?func@@YAHH@Z'
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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registers:
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liveins:
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- { reg: '$w0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: true
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hasCalls: true
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stackProtector: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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localFrameSize: 492
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savePoint: ''
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restorePoint: ''
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fixedStack:
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stack:
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- { id: 0, name: B, type: default, offset: 0, size: 492, alignment: 4,
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stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -492, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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constants:
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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liveins: $w0
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renamable $w19 = COPY $w0
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ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
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BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
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ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
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dead $wzr = SUBSWri killed renamable $w19, 3, 0, implicit-def $nzcv
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Bcc 11, %bb.2, implicit killed $nzcv
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B %bb.1
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bb.1.if.then:
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TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp
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bb.2.if.else:
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ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
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$x0 = ADDXri %stack.0.B, 0, 0
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BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp, implicit-def $w0
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ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
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RET_ReallyLR implicit $w0
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...
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