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1# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \2# RUN: -stop-after=prologepilog | FileCheck %s3# Check multiple epilogues, save_reg, save_reg_x.4 5# CHECK-LABEL: bb.0.entry:6# CHECK: early-clobber $sp = frame-setup STRXpre killed $x19, $sp, -327# CHECK-NEXT: frame-setup SEH_SaveReg_X 19, -328# CHECK-NEXT: frame-setup STRXui killed $x28, $sp, 19# CHECK-NEXT: frame-setup SEH_SaveReg 28, 810# CHECK-NEXT: frame-setup STRXui killed $lr, $sp, 211# CHECK-NEXT: frame-setup SEH_SaveReg 30, 1612# CHECK-NEXT: $sp = frame-setup SUBXri $sp, 496, 013# CHECK-NEXT: frame-setup SEH_StackAlloc 49614# CHECK-NEXT: frame-setup SEH_PrologEnd15 16# CHECK-LABEL: bb.1.if.then:17# CHECK: frame-destroy SEH_EpilogStart18# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 496, 019# CHECK-NEXT: frame-destroy SEH_StackAlloc 49620# CHECK-NEXT: $lr = frame-destroy LDRXui $sp, 221# CHECK-NEXT: frame-destroy SEH_SaveReg 30, 1622# CHECK-NEXT: $x28 = frame-destroy LDRXui $sp, 123# CHECK-NEXT: frame-destroy SEH_SaveReg 28, 824# CHECK-NEXT: early-clobber $sp, $x19 = frame-destroy LDRXpost $sp, 3225# CHECK-NEXT: frame-destroy SEH_SaveReg_X 19, -3226# CHECK-NEXT: frame-destroy SEH_EpilogEnd27# CHECK-NEXT: TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp28 29 30--- |31 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"32 target triple = "aarch64-unknown-windows-msvc19.11.0"33 34 define dso_local i32 @"?func@@YAHH@Z"(i32 %i) local_unnamed_addr #0 {35 entry:36 %B = alloca [123 x i32], align 437 %call = tail call i32 @"?func2@@YAHXZ"()38 %cmp = icmp sgt i32 %i, 239 br i1 %cmp, label %if.then, label %if.else40 41 if.then: ; preds = %entry42 %call1 = tail call i32 @"?func2@@YAHXZ"()43 ret i32 %call144 45 if.else: ; preds = %entry46 %0 = bitcast ptr %B to ptr47 call void @llvm.lifetime.start.p0(i64 492, ptr nonnull %0) #348 %arraydecay7 = bitcast ptr %B to ptr49 %call2 = call i32 @"?func3@@YAHPEAH@Z"(ptr nonnull %arraydecay7)50 call void @llvm.lifetime.end.p0(i64 492, ptr nonnull %0) #351 ret i32 %call252 }53 54 ; Function Attrs: argmemonly nounwind55 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #156 57 declare dso_local i32 @"?func2@@YAHXZ"() local_unnamed_addr #258 59 declare dso_local i32 @"?func3@@YAHPEAH@Z"(ptr) local_unnamed_addr #260 61 ; Function Attrs: argmemonly nounwind62 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #163 64 ; Function Attrs: nounwind65 declare void @llvm.stackprotector(ptr, ptr) #366 67 attributes #0 = { "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" "use-soft-float"="false" }68 attributes #1 = { argmemonly nounwind }69 attributes #2 = { "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" "use-soft-float"="false" }70 attributes #3 = { nounwind }71 72...73---74name: '?func@@YAHH@Z'75alignment: 476exposesReturnsTwice: false77legalized: false78regBankSelected: false79selected: false80failedISel: false81tracksRegLiveness: true82hasWinCFI: false83registers:84liveins:85 - { reg: '$w0', virtual-reg: '' }86frameInfo:87 isFrameAddressTaken: false88 isReturnAddressTaken: false89 hasStackMap: false90 hasPatchPoint: false91 stackSize: 092 offsetAdjustment: 093 maxAlignment: 494 adjustsStack: true95 hasCalls: true96 stackProtector: ''97 maxCallFrameSize: 098 cvBytesOfCalleeSavedRegisters: 099 hasOpaqueSPAdjustment: false100 hasVAStart: false101 hasMustTailInVarArgFunc: false102 localFrameSize: 492103 savePoint: []104 restorePoint: []105fixedStack:106stack:107 - { id: 0, name: B, type: default, offset: 0, size: 492, alignment: 4,108 stack-id: default, callee-saved-register: '', callee-saved-restored: true,109 local-offset: -492, debug-info-variable: '', debug-info-expression: '',110 debug-info-location: '' }111constants:112body: |113 bb.0.entry:114 successors: %bb.1(0x40000000), %bb.2(0x40000000)115 liveins: $w0116 117 renamable $w19 = COPY $w0118 ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp119 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0120 ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp121 dead $wzr = SUBSWri killed renamable $w19, 3, 0, implicit-def $nzcv122 Bcc 11, %bb.2, implicit killed $nzcv123 B %bb.1124 125 bb.1.if.then:126 TCRETURNdi @"?func2@@YAHXZ", 0, csr_aarch64_aapcs, implicit $sp127 128 bb.2.if.else:129 ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp130 $x0 = ADDXri %stack.0.B, 0, 0131 BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp, implicit-def $w0132 ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp133 RET_ReallyLR implicit $w0134 135...136