| # RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \ |
| # RUN: -stop-after=prologepilog | FileCheck %s |
| # Test that the frame lowering emits correct SEH updates for the case without |
| # a stack frame (e.g. no callee saved registers, no frame pointer, just locals) |
| |
| # CHECK: $sp = frame-setup SUBXri $sp, 16, 0 |
| # CHECK-NEXT: frame-setup SEH_StackAlloc 16 |
| # CHECK-NEXT: frame-setup SEH_PrologEnd |
| # CHECK: frame-destroy SEH_EpilogStart |
| # CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 16, 0 |
| # CHECK-NEXT: frame-destroy SEH_StackAlloc 16 |
| # CHECK-NEXT: frame-destroy SEH_EpilogEnd |
| # CHECK-NEXT: RET_ReallyLR implicit killed $w0 |
| |
| --- | |
| target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64-unknown-windows-msvc19.11.0" |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define dso_local i32 @"?func@@YAHH@Z"(i32 %a) #0 { |
| entry: |
| %a.addr = alloca i32, align 4 |
| %b = alloca i32, align 4 |
| store i32 %a, i32* %a.addr, align 4 |
| store i32 2, i32* %b, align 4 |
| %0 = load i32, i32* %b, align 4 |
| %1 = load i32, i32* %a.addr, align 4 |
| %add = add nsw i32 %0, %1 |
| ret i32 %add |
| } |
| |
| 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" "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" } |
| |
| ... |
| --- |
| name: '?func@@YAHH@Z' |
| alignment: 4 |
| exposesReturnsTwice: false |
| legalized: true |
| regBankSelected: true |
| selected: true |
| failedISel: false |
| tracksRegLiveness: true |
| registers: |
| liveins: |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 0 |
| offsetAdjustment: 0 |
| maxAlignment: 4 |
| adjustsStack: false |
| hasCalls: false |
| stackProtector: '' |
| maxCallFrameSize: 0 |
| cvBytesOfCalleeSavedRegisters: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| localFrameSize: 8 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: |
| stack: |
| - { id: 0, name: a.addr, type: default, offset: 0, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -4, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| - { id: 1, name: b, type: default, offset: 0, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| local-offset: -8, debug-info-variable: '', debug-info-expression: '', |
| debug-info-location: '' } |
| constants: |
| body: | |
| bb.1.entry: |
| liveins: $w0 |
| |
| renamable $w8 = MOVi32imm 2 |
| STRWui killed renamable $w0, %stack.0.a.addr, 0 :: (store (s32) into %ir.a.addr) |
| STRWui killed renamable $w8, %stack.1.b, 0 :: (store (s32) into %ir.b) |
| renamable $w8 = LDRWui %stack.1.b, 0 :: (load (s32) from %ir.b) |
| renamable $w0 = LDRWui %stack.0.a.addr, 0 :: (load (s32) from %ir.a.addr) |
| renamable $w0 = nsw ADDWrr killed renamable $w8, killed renamable $w0 |
| RET_ReallyLR implicit killed $w0 |
| |
| ... |