1# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \ 2# RUN: -stop-after=prologepilog | FileCheck %s 3# Test that stack probe results in Nop unwind codes in the prologue. Test 4# save_fplr, save_reg_x and stack_alloc with multiple updates. 5 6# CHECK: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2 7# CHECK-NEXT: frame-setup SEH_SaveFPLR_X -16 8# CHECK-NEXT: $x15 = frame-setup MOVZXi 56009, 0 9# CHECK-NEXT: frame-setup SEH_Nop 10# CHECK-NEXT: $x15 = frame-setup MOVKXi $x15, 2, 16 11# CHECK-NEXT: frame-setup SEH_Nop 12# CHECK-NEXT: frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15 13# CHECK-NEXT: frame-setup SEH_Nop 14# CHECK-NEXT: $sp = frame-setup SUBXrx64 killed $sp, killed $x15, 28 15# CHECK-NEXT: frame-setup SEH_StackAlloc 2993296 16# CHECK-NEXT: frame-setup SEH_PrologEnd 17# CHECK: frame-destroy SEH_EpilogStart 18# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 730, 12 19# CHECK-NEXT: frame-destroy SEH_StackAlloc 2990080 20# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 3216, 0 21# CHECK-NEXT: frame-destroy SEH_StackAlloc 3216 22# CHECK-NEXT: early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2 23# CHECK-NEXT: frame-destroy SEH_SaveFPLR_X -16 24# CHECK-NEXT: frame-destroy SEH_EpilogEnd 25# CHECK-NEXT: RET_ReallyLR implicit killed $w0 26--- | 27 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128" 28 target triple = "aarch64-unknown-windows-msvc19.11.0" 29 30 ; Function Attrs: noinline optnone 31 define dso_local i32 @"?func@@YAHH@Z"(i32 %i) #0 { 32 entry: 33 %retval = alloca i32, align 4 34 %i.addr = alloca i32, align 4 35 %A = alloca [748193 x i32], align 4 36 %a = alloca i32, align 4 37 %B = alloca [123 x i32], align 4 38 store i32 %i, i32* %i.addr, align 4 39 %0 = load i32, i32* %i.addr, align 4 40 %add = add nsw i32 %0, 2 41 store i32 %add, i32* %a, align 4 42 %call = call i32 @"?func2@@YAHXZ"() 43 %1 = load i32, i32* %i.addr, align 4 44 %cmp = icmp sgt i32 %1, 2 45 br i1 %cmp, label %if.then, label %if.else 46 47 if.then: ; preds = %entry 48 %call1 = call i32 @"?func2@@YAHXZ"() 49 store i32 %call1, i32* %retval, align 4 50 br label %return 51 52 if.else: ; preds = %entry 53 %arraydecay = getelementptr inbounds [123 x i32], [123 x i32]* %B, i32 0, i32 0 54 %call2 = call i32 @"?func3@@YAHPEAH@Z"(i32* %arraydecay) 55 store i32 %call2, i32* %retval, align 4 56 br label %return 57 58 return: ; preds = %if.else, %if.then 59 %2 = load i32, i32* %retval, align 4 60 ret i32 %2 61 } 62 63 declare dso_local i32 @"?func2@@YAHXZ"() #1 64 65 declare dso_local i32 @"?func3@@YAHPEAH@Z"(i32*) #1 66 67 ; Function Attrs: nounwind 68 declare void @llvm.stackprotector(i8*, i8**) #2 69 70 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" } 71 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" } 72 attributes #2 = { nounwind } 73 74... 75--- 76name: '?func@@YAHH@Z' 77alignment: 4 78exposesReturnsTwice: false 79legalized: true 80regBankSelected: true 81selected: true 82failedISel: false 83tracksRegLiveness: true 84hasWinCFI: false 85registers: 86liveins: 87frameInfo: 88 isFrameAddressTaken: false 89 isReturnAddressTaken: false 90 hasStackMap: false 91 hasPatchPoint: false 92 stackSize: 0 93 offsetAdjustment: 0 94 maxAlignment: 8 95 adjustsStack: true 96 hasCalls: true 97 stackProtector: '' 98 maxCallFrameSize: 0 99 cvBytesOfCalleeSavedRegisters: 0 100 hasOpaqueSPAdjustment: false 101 hasVAStart: false 102 hasMustTailInVarArgFunc: false 103 localFrameSize: 2993276 104 savePoint: '' 105 restorePoint: '' 106fixedStack: 107stack: 108 - { id: 0, name: retval, type: default, offset: 0, size: 4, alignment: 4, 109 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 110 local-offset: -4, debug-info-variable: '', debug-info-expression: '', 111 debug-info-location: '' } 112 - { id: 1, name: i.addr, type: default, offset: 0, size: 4, alignment: 4, 113 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 114 local-offset: -8, debug-info-variable: '', debug-info-expression: '', 115 debug-info-location: '' } 116 - { id: 2, name: A, type: default, offset: 0, size: 2992772, alignment: 4, 117 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 118 local-offset: -2992780, debug-info-variable: '', debug-info-expression: '', 119 debug-info-location: '' } 120 - { id: 3, name: a, type: default, offset: 0, size: 4, alignment: 4, 121 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 122 local-offset: -2992784, debug-info-variable: '', debug-info-expression: '', 123 debug-info-location: '' } 124 - { id: 4, name: B, type: default, offset: 0, size: 492, alignment: 4, 125 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 126 local-offset: -2993276, debug-info-variable: '', debug-info-expression: '', 127 debug-info-location: '' } 128 - { id: 5, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8, 129 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 130 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 131 - { id: 6, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4, 132 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 133 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 134constants: 135body: | 136 bb.1.entry: 137 successors: %bb.2(0x40000000), %bb.3(0x40000000) 138 liveins: $w0 139 140 renamable $x8 = ADDXri %stack.1.i.addr, 0, 0 141 renamable $w9 = MOVi32imm 2 142 STRWui killed renamable $w0, renamable $x8, 0 :: (store 4 into %ir.i.addr) 143 renamable $w0 = LDRWui renamable $x8, 0 :: (load 4 from %ir.i.addr) 144 renamable $w0 = ADDWri killed renamable $w0, 2, 0 145 STRWui killed renamable $w0, %stack.3.a, 0 :: (store 4 into %ir.a) 146 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp 147 STRXui killed $x8, %stack.5, 0 :: (store 8 into %stack.5) 148 STRWui killed $w9, %stack.6, 0 :: (store 4 into %stack.6) 149 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0 150 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp 151 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) 152 renamable $w9 = LDRWui killed renamable $x8, 0 :: (load 4 from %ir.i.addr) 153 $w10 = LDRWui %stack.6, 0 :: (load 4 from %stack.6) 154 $wzr = SUBSWrr killed renamable $w9, killed renamable $w10, implicit-def $nzcv 155 renamable $w9 = CSINCWr $wzr, $wzr, 13, implicit $nzcv 156 TBNZW killed renamable $w9, 0, %bb.2 157 B %bb.3 158 159 bb.2.if.then: 160 successors: %bb.4(0x80000000) 161 162 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp 163 BL @"?func2@@YAHXZ", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit-def $w0 164 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp 165 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) 166 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval) 167 B %bb.4 168 169 bb.3.if.else: 170 successors: %bb.4(0x80000000) 171 172 renamable $x8 = ADDXri %stack.4.B, 0, 0 173 ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp 174 $x0 = COPY killed renamable $x8 175 BL @"?func3@@YAHPEAH@Z", csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $x0, implicit-def $w0 176 ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp 177 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) 178 STRWui killed renamable $w0, killed renamable $x8, 1 :: (store 4 into %ir.retval) 179 180 bb.4.return: 181 $x8 = LDRXui %stack.5, 0 :: (load 8 from %stack.5) 182 renamable $w0 = LDRWui killed renamable $x8, 1 :: (load 4 from %ir.retval) 183 RET_ReallyLR implicit killed $w0 184 185... 186