1# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \ 2# RUN: -stop-after=prologepilog | FileCheck %s 3# Test that the frame lowering emits correct SEH updates for the case without 4# a stack frame (e.g. no callee saved registers, no frame pointer, just locals) 5 6# CHECK: $sp = frame-setup SUBXri $sp, 16, 0 7# CHECK-NEXT: frame-setup SEH_StackAlloc 16 8# CHECK-NEXT: frame-setup SEH_PrologEnd 9# CHECK: frame-destroy SEH_EpilogStart 10# CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 16, 0 11# CHECK-NEXT: frame-destroy SEH_StackAlloc 16 12# CHECK-NEXT: frame-destroy SEH_EpilogEnd 13# CHECK-NEXT: RET_ReallyLR implicit killed $w0 14 15--- | 16 target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128" 17 target triple = "aarch64-unknown-windows-msvc19.11.0" 18 19 ; Function Attrs: noinline nounwind optnone uwtable 20 define dso_local i32 @"?func@@YAHH@Z"(i32 %a) #0 { 21 entry: 22 %a.addr = alloca i32, align 4 23 %b = alloca i32, align 4 24 store i32 %a, i32* %a.addr, align 4 25 store i32 2, i32* %b, align 4 26 %0 = load i32, i32* %b, align 4 27 %1 = load i32, i32* %a.addr, align 4 28 %add = add nsw i32 %0, %1 29 ret i32 %add 30 } 31 32 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" } 33 34... 35--- 36name: '?func@@YAHH@Z' 37alignment: 4 38exposesReturnsTwice: false 39legalized: true 40regBankSelected: true 41selected: true 42failedISel: false 43tracksRegLiveness: true 44registers: 45liveins: 46frameInfo: 47 isFrameAddressTaken: false 48 isReturnAddressTaken: false 49 hasStackMap: false 50 hasPatchPoint: false 51 stackSize: 0 52 offsetAdjustment: 0 53 maxAlignment: 4 54 adjustsStack: false 55 hasCalls: false 56 stackProtector: '' 57 maxCallFrameSize: 0 58 cvBytesOfCalleeSavedRegisters: 0 59 hasOpaqueSPAdjustment: false 60 hasVAStart: false 61 hasMustTailInVarArgFunc: false 62 localFrameSize: 8 63 savePoint: '' 64 restorePoint: '' 65fixedStack: 66stack: 67 - { id: 0, name: a.addr, type: default, offset: 0, size: 4, alignment: 4, 68 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 69 local-offset: -4, debug-info-variable: '', debug-info-expression: '', 70 debug-info-location: '' } 71 - { id: 1, name: b, type: default, offset: 0, size: 4, alignment: 4, 72 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 73 local-offset: -8, debug-info-variable: '', debug-info-expression: '', 74 debug-info-location: '' } 75constants: 76body: | 77 bb.1.entry: 78 liveins: $w0 79 80 renamable $w8 = MOVi32imm 2 81 STRWui killed renamable $w0, %stack.0.a.addr, 0 :: (store 4 into %ir.a.addr) 82 STRWui killed renamable $w8, %stack.1.b, 0 :: (store 4 into %ir.b) 83 renamable $w8 = LDRWui %stack.1.b, 0 :: (load 4 from %ir.b) 84 renamable $w0 = LDRWui %stack.0.a.addr, 0 :: (load 4 from %ir.a.addr) 85 renamable $w0 = nsw ADDWrr killed renamable $w8, killed renamable $w0 86 RET_ReallyLR implicit killed $w0 87 88... 89