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TheRock/compiler/amd-llvm/llvm/test/DebugInfo/MIR/X86/dwarf-dump-call-target-block.mir
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2026-09-02 16:34:47 -07:00

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# RUN: llc %s -start-after=livedebugvalues --filetype=obj -o - \
# RUN: | llvm-dwarfdump - -v \
# RUN: | FileCheck %s
## Contrived test: -gdwarf-3 -ggdb and hand-modified IR adding DISubprogram
## flag DIFlagAllCallsDescribed to force call site emission using DW_FORM_block,
## to check block form expressions are handled.
# CHECK: DW_AT_GNU_call_site_target_clobbered [DW_FORM_block1] (DW_OP_breg5 RDI+0)
--- |
target triple = "x86_64-unknown-linux"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
define dso_local void @_Z8call_memPPFvvE(ptr noundef readonly captures(none) %f) local_unnamed_addr !dbg !5 {
entry:
%0 = load ptr, ptr %f, align 8
call void %0(), !dbg !13
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3}
!llvm.ident = !{!4}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 22.0.0git", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "test.cpp", directory: "/")
!2 = !{i32 7, !"Dwarf Version", i32 3}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = !{!"clang version 22.0.0git"}
!5 = distinct !DISubprogram(name: "call_mem", linkageName: "_Z8call_memPPFvvE", scope: !1, file: !1, line: 1, type: !6, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!6 = !DISubroutineType(types: !7)
!7 = !{null, !8}
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
!10 = !DISubroutineType(types: !11)
!11 = !{null}
!12 = !{}
!13 = !DILocation(line: 3, scope: !5)
...
---
name: _Z8call_memPPFvvE
alignment: 16
tracksRegLiveness: true
noPhis: true
isSSA: false
noVRegs: true
hasFakeUses: false
debugInstrRef: true
tracksDebugUserValues: true
liveins:
- { reg: '$rdi' }
frameInfo:
stackSize: 8
offsetAdjustment: -8
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
isCalleeSavedInfoValid: true
machineFunctionInfo:
amxProgModel: None
body: |
bb.0.entry:
liveins: $rdi
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
frame-setup CFI_INSTRUCTION def_cfa_offset 16
CALL64m killed renamable $rdi, 1, $noreg, 0, $noreg, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !13 :: (load (s64) from %ir.f)
$rax = frame-destroy POP64r implicit-def $rsp, implicit $rsp
frame-destroy CFI_INSTRUCTION def_cfa_offset 8
RET64
...