107 lines
3.6 KiB
Text
107 lines
3.6 KiB
Text
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# RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \
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# RUN: | FileCheck %s
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# CHECK: $x0 = LDRXui $sp, 1
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# CHECK: $x19 = frame-destroy LDRXui $sp, 2
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--- |
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target triple = "aarch64-pc-windows-gnu"
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define dso_local noundef i64 @_Z1fPFvPxEx(ptr nocapture noundef readonly %g, i64 noundef %x) uwtable {
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entry:
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%x.addr = alloca i64, align 8
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store i64 %x, ptr %x.addr, align 8
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call void %g(ptr noundef nonnull %x.addr)
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call void asm sideeffect "", "~{x19}"()
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%0 = load i64, ptr %x.addr, align 8
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ret i64 %0
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}
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...
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---
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name: _Z1fPFvPxEx
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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: true
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callsEHReturn: false
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callsUnwindInit: false
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hasEHCatchret: false
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hasEHScopes: false
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hasEHFunclets: false
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failsVerification: false
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tracksDebugUserValues: true
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registers: []
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liveins:
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- { reg: '$x0', virtual-reg: '' }
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- { reg: '$x1', 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: 32
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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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functionContext: ''
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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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hasTailCall: false
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localFrameSize: 8
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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: x.addr, type: default, offset: -24, size: 8, alignment: 8,
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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: 1, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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- { id: 2, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '$x19', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo:
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hasRedZone: false
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body: |
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bb.0.entry:
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liveins: $x0, $x1, $x19, $lr
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$sp = frame-setup SUBXri $sp, 32, 0
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frame-setup SEH_StackAlloc 32
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frame-setup STRXui killed $x19, $sp, 2 :: (store (s64) into %stack.2)
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frame-setup SEH_SaveReg 19, 16
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frame-setup STRXui killed $lr, $sp, 3 :: (store (s64) into %stack.1)
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frame-setup SEH_SaveReg 30, 24
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frame-setup SEH_PrologEnd
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renamable $x8 = COPY $x0
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STRXui killed renamable $x1, $sp, 1 :: (store (s64) into %ir.x.addr)
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$x0 = ADDXri $sp, 8, 0
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BLR killed renamable $x8, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp
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INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $x19
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renamable $x0 = LDRXui $sp, 1 :: (dereferenceable load (s64) from %ir.x.addr)
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frame-destroy SEH_EpilogStart
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$lr = frame-destroy LDRXui $sp, 3 :: (load (s64) from %stack.1)
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frame-destroy SEH_SaveReg 30, 24
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$x19 = frame-destroy LDRXui $sp, 2 :: (load (s64) from %stack.2)
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frame-destroy SEH_SaveReg 19, 16
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$sp = frame-destroy ADDXri $sp, 32, 0
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frame-destroy SEH_StackAlloc 32
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frame-destroy SEH_EpilogEnd
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RET_ReallyLR implicit $x0
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...
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