forked from OSchip/llvm-project
89 lines
3.3 KiB
Plaintext
89 lines
3.3 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 the frame lowering emits correct SEH updates for the case without
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# a stack frame (e.g. no callee saved registers, no frame pointer, just locals)
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# CHECK: $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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# CHECK: frame-destroy SEH_EpilogStart
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# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 16, 0
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# CHECK-NEXT: frame-destroy SEH_StackAlloc 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 nounwind optnone uwtable
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define dso_local i32 @"?func@@YAHH@Z"(i32 %a) #0 {
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entry:
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%a.addr = alloca i32, align 4
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%b = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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store i32 2, i32* %b, align 4
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%0 = load i32, i32* %b, align 4
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%1 = load i32, i32* %a.addr, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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}
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attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "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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...
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---
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name: '?func@@YAHH@Z'
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alignment: 2
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exposesReturnsTwice: false
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legalized: true
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regBankSelected: true
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selected: true
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failedISel: false
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tracksRegLiveness: true
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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: 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: a.addr, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: 0, 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, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: 0, 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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constants:
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body: |
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bb.1.entry:
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liveins: $w0
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renamable $w8 = MOVi32imm 2
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STRWui killed renamable $w0, %stack.0.a.addr, 0 :: (store 4 into %ir.a.addr)
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STRWui killed renamable $w8, %stack.1.b, 0 :: (store 4 into %ir.b)
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renamable $w8 = LDRWui %stack.1.b, 0 :: (load 4 from %ir.b)
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renamable $w0 = LDRWui %stack.0.a.addr, 0 :: (load 4 from %ir.a.addr)
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renamable $w0 = nsw ADDWrr killed renamable $w8, killed renamable $w0
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RET_ReallyLR implicit killed $w0
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...
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