# RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \ # RUN: | FileCheck %s # CHECK: $x0 = LDRXui $sp, 1 # CHECK: $x19 = frame-destroy LDRXui $sp, 2 --- | target triple = "aarch64-pc-windows-gnu" define dso_local noundef i64 @_Z1fPFvPxEx(ptr nocapture noundef readonly %g, i64 noundef %x) uwtable { entry: %x.addr = alloca i64, align 8 store i64 %x, ptr %x.addr, align 8 call void %g(ptr noundef nonnull %x.addr) call void asm sideeffect "", "~{x19}"() %0 = load i64, ptr %x.addr, align 8 ret i64 %0 } ... --- name: _Z1fPFvPxEx alignment: 4 exposesReturnsTwice: false legalized: false regBankSelected: false selected: false failedISel: false tracksRegLiveness: true hasWinCFI: true callsEHReturn: false callsUnwindInit: false hasEHCatchret: false hasEHScopes: false hasEHFunclets: false failsVerification: false tracksDebugUserValues: true registers: [] liveins: - { reg: '$x0', virtual-reg: '' } - { reg: '$x1', virtual-reg: '' } frameInfo: isFrameAddressTaken: false isReturnAddressTaken: false hasStackMap: false hasPatchPoint: false stackSize: 32 offsetAdjustment: 0 maxAlignment: 8 adjustsStack: true hasCalls: true stackProtector: '' functionContext: '' maxCallFrameSize: 0 cvBytesOfCalleeSavedRegisters: 0 hasOpaqueSPAdjustment: false hasVAStart: false hasMustTailInVarArgFunc: false hasTailCall: false localFrameSize: 8 savePoint: '' restorePoint: '' fixedStack: [] stack: - { id: 0, name: x.addr, type: default, offset: -24, size: 8, alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true, local-offset: -8, debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } - { id: 1, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } - { id: 2, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x19', callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } callSites: [] debugValueSubstitutions: [] constants: [] machineFunctionInfo: hasRedZone: false body: | bb.0.entry: liveins: $x0, $x1, $x19, $lr $sp = frame-setup SUBXri $sp, 32, 0 frame-setup SEH_StackAlloc 32 frame-setup STRXui killed $x19, $sp, 2 :: (store (s64) into %stack.2) frame-setup SEH_SaveReg 19, 16 frame-setup STRXui killed $lr, $sp, 3 :: (store (s64) into %stack.1) frame-setup SEH_SaveReg 30, 24 frame-setup SEH_PrologEnd renamable $x8 = COPY $x0 STRXui killed renamable $x1, $sp, 1 :: (store (s64) into %ir.x.addr) $x0 = ADDXri $sp, 8, 0 BLR killed renamable $x8, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $x19 renamable $x0 = LDRXui $sp, 1 :: (dereferenceable load (s64) from %ir.x.addr) frame-destroy SEH_EpilogStart $lr = frame-destroy LDRXui $sp, 3 :: (load (s64) from %stack.1) frame-destroy SEH_SaveReg 30, 24 $x19 = frame-destroy LDRXui $sp, 2 :: (load (s64) from %stack.2) frame-destroy SEH_SaveReg 19, 16 $sp = frame-destroy ADDXri $sp, 32, 0 frame-destroy SEH_StackAlloc 32 frame-destroy SEH_EpilogEnd RET_ReallyLR implicit $x0 ...