151 lines
7.1 KiB
Plaintext
151 lines
7.1 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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# Test that stack probe results in Nop unwind codes in the prologue. Test
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# save_fplr, save_reg_x and stack_alloc with multiple updates
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# CHECK: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2
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# CHECK-NEXT: frame-setup SEH_SaveFPLR_X -16
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# CHECK-NEXT: $fp = frame-setup ADDXri $sp, 0, 0
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# CHECK-NEXT: frame-setup SEH_SetFP
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# CHECK-NEXT: $sp = frame-setup SUBXri $sp, 32, 0
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# CHECK-NEXT: frame-setup SEH_StackAlloc 32
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# CHECK-NEXT: frame-setup SEH_PrologEnd
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# CHECK: frame-destroy SEH_EpilogStart
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# CHECK-NEXT: $sp = frame-destroy ADDXri $fp, 0, 0
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# CHECK-NEXT: frame-destroy SEH_SetFP
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# CHECK-NEXT: early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2
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# CHECK-NEXT: frame-destroy SEH_SaveFPLR_X -16
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# CHECK-NEXT: frame-destroy SEH_EpilogEnd
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# CHECK-NEXT: RET_ReallyLR implicit killed $w0
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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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; Function Attrs: noinline optnone
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define dso_local i32 @"?func@@YAHHHHH@Z"(i32 %n, i32 %idx, i32 %b, i32 %c) #0 {
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entry:
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%c.addr = alloca i32, align 4
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%b.addr = alloca i32, align 4
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%idx.addr = alloca i32, align 4
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%n.addr = alloca i32, align 4
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%a = alloca i32*, align 8
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store i32 %c, i32* %c.addr, align 4
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store i32 %b, i32* %b.addr, align 4
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store i32 %idx, i32* %idx.addr, align 4
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store i32 %n, i32* %n.addr, align 4
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%0 = load i32, i32* %n.addr, align 4
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%conv = sext i32 %0 to i64
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%1 = alloca i8, i64 %conv, align 16
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%2 = bitcast i8* %1 to i32*
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store i32* %2, i32** %a, align 8
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%3 = load i32*, i32** %a, align 8
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call void @"?init@@YAXPEAH@Z"(i32* %3)
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ret i32 0
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}
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declare dso_local void @"?init@@YAXPEAH@Z"(i32*) #1
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #2
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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" }
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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" }
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attributes #2 = { nounwind }
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...
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---
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name: '?func@@YAHHHHH@Z'
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alignment: 4
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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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- { reg: '$w1', virtual-reg: '' }
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- { reg: '$w2', virtual-reg: '' }
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- { reg: '$w3', 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: 8
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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: 24
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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: c.addr, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 1, name: b.addr, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -8, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 2, name: idx.addr, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -12, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 3, name: n.addr, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -16, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 4, name: a, type: default, offset: 0, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -24, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 5, name: '', type: variable-sized, offset: 0,
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alignment: 1, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -24, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 6, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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constants:
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body: |
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bb.0.entry:
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liveins: $w0, $w1, $w2, $w3
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STRWui killed renamable $w3, %stack.0.c.addr, 0 :: (store 4 into %ir.c.addr)
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STRWui killed renamable $w2, %stack.1.b.addr, 0 :: (store 4 into %ir.b.addr)
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STRWui killed renamable $w1, %stack.2.idx.addr, 0 :: (store 4 into %ir.idx.addr)
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STRWui killed renamable $w0, %stack.3.n.addr, 0 :: (store 4 into %ir.n.addr)
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renamable $x8 = LDRSWui %stack.3.n.addr, 0 :: (dereferenceable load 4 from %ir.n.addr)
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ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
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renamable $x8 = nuw ADDXri killed renamable $x8, 15, 0
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renamable $x8 = UBFMXri killed renamable $x8, 4, 63
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$x15 = COPY renamable $x8
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STRXui killed $x8, %stack.6, 0 :: (store 8 into %stack.6)
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BL &__chkstk, csr_aarch64_stackprobe_windows, implicit-def dead $lr, implicit $sp, implicit killed $x15
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renamable $x8 = COPY $sp
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$x15 = LDRXui %stack.6, 0 :: (load 8 from %stack.6)
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renamable $x8 = SUBSXrs killed renamable $x8, killed renamable $x15, 4, implicit-def dead $nzcv
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$sp = COPY renamable $x8
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ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
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STRXui killed renamable $x8, %stack.4.a, 0 :: (store 8 into %ir.a)
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renamable $x0 = LDRXui %stack.4.a, 0 :: (dereferenceable load 8 from %ir.a)
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ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
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BL @"?init@@YAXPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, implicit-def $sp
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ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
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renamable $w1 = COPY $wzr
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$w0 = COPY killed renamable $w1
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RET_ReallyLR implicit killed $w0
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...
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