# RUN: llc -o - %s -O0 -regalloc=fast -run-pass=livedebugvalues | \
# RUN: FileCheck %s -implicit-check-not=DBG_VALUE
--- |
target triple = "arm64-apple-ios12.1.0"
declare void @use(i32)
define void @f1(i32 %x) !dbg !6 {
entry:
%var = add i32 %x, 1, !dbg !12
call void @llvm.dbg.value(metadata i32 %var, metadata !9, metadata !DIExpression()), !dbg !12
br label %artificial-bb-1, !dbg !13
artificial-bb-1:
br label %artificial-bb-2
artificial-bb-2:
%invisible = add i32 %var, 1
br label %return, !dbg !14
return:
call void @use(i32 %var)
ret void, !dbg !15
}
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
declare void @llvm.stackprotector(ptr, ptr) #1
attributes #0 = { nounwind readnone speculatable }
attributes #1 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!3, !4}
!llvm.module.flags = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "compiler-gen-bbs-livedebugvalues.ll", directory: "/")
!2 = !{}
!3 = !{i32 6}
!4 = !{i32 2}
!5 = !{i32 2, !"Debug Info Version", i32 3}
!6 = distinct !DISubprogram(name: "f1", linkageName: "f1", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8)
!7 = !DISubroutineType(types: !2)
!8 = !{!9, !11}
!9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
!11 = !DILocalVariable(name: "2", scope: !6, file: !1, line: 4, type: !10)
!12 = !DILocation(line: 1, column: 1, scope: !6)
!13 = !DILocation(line: 2, column: 1, scope: !6)
!14 = !DILocation(line: 0, column: 1, scope: !6)
!15 = !DILocation(line: 4, column: 1, scope: !6)
...
---
# CHECK-LABEL: name: f1
name: f1
alignment: 4
legalized: true
regBankSelected: true
selected: true
tracksRegLiveness: true
frameInfo:
stackSize: 32
maxAlignment: 8
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
stack:
- { id: 0, type: spill-slot, offset: -20, size: 4, alignment: 4, stack-id: default }
- { id: 1, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$lr' }
- { id: 2, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$fp' }
body: |
; CHECK-LABEL: bb.0.entry:
bb.0.entry:
liveins: $w0, $lr
$sp = frame-setup SUBXri $sp, 32, 0
frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.2), (store (s64) into %stack.1)
frame-setup CFI_INSTRUCTION def_cfa_offset 32
frame-setup CFI_INSTRUCTION offset $w30, -8, debug-location !12
frame-setup CFI_INSTRUCTION offset $w29, -16, debug-location !12
renamable $w0 = ADDWri killed renamable $w0, 1, 0, debug-location !12
DBG_VALUE renamable $w0, $noreg, !9, !DIExpression(), debug-location !12
STRWui killed $w0, $sp, 3 :: (store (s32) into %stack.0)
DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12), debug-location !12
; CHECK: DBG_VALUE renamable $w0, $noreg, !9, !DIExpression(), debug-location !12
; CHECK-NEXT: STRWui killed $w0, $sp, 3 :: (store (s32) into %stack.0)
; CHECK-NEXT: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
; CHECK-NEXT: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
bb.1.artificial-bb-1:
; CHECK-LABEL: bb.1.artificial-bb-1:
; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
bb.2.artificial-bb-2:
; CHECK-LABEL: bb.2.artificial-bb-2:
; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
bb.3.return:
; CHECK-LABEL: bb.3.return:
; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
$w0 = LDRWui $sp, 3 :: (load (s32) from %stack.0)
BL @use, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit killed $w0
$fp, $lr = frame-destroy LDPXi $sp, 2, debug-location !15 :: (load (s64) from %stack.2), (load (s64) from %stack.1)
$sp = frame-destroy ADDXri $sp, 32, 0, debug-location !15
RET undef $lr, debug-location !15
...
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