71 lines
1.9 KiB
Plaintext
71 lines
1.9 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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# Check that the callee-saved registers are saved starting with a STP
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# with predecrement, followed by a separate stack adjustment later,
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# if the optsize attribute is set.
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# CHECK: early-clobber $sp = frame-setup STPXpre killed $x19, killed $x20, $sp, -2
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# CHECK-NEXT: frame-setup SEH_SaveRegP_X 19, 20, -16
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# CHECK-NEXT: $sp = frame-setup SUBXri $sp, 16, 0
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# CHECK-NEXT: frame-setup SEH_StackAlloc 16
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# CHECK-NEXT: frame-setup SEH_PrologEnd
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--- |
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define dso_local i32 @func(i32 %a) optsize { ret i32 %a }
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...
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---
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name: func
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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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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: 4
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adjustsStack: false
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hasCalls: false
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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: 4
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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: '', 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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callSites: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0:
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liveins: $x0, $x19, $x20
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renamable $x8 = ADDXri %stack.0, 0, 0
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$x19 = ADDXrr $x0, $x8
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$x20 = ADDXrr $x19, $x0
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$x0 = ADDXrr $x0, killed $x20
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RET_ReallyLR
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...
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