# RUN: llc -emit-call-site-info -start-before=livedebugvalues -filetype=obj -o - %s \
# RUN: | llvm-dwarfdump - | FileCheck %s --implicit-check-not=DW_TAG_GNU_call_site_parameter
--- |
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: nounwind uwtable
define void @move_around_args(i32 %a) #0 !dbg !12 {
entry:
call void @call2(i32 123, i32 %a), !dbg !15
ret void, !dbg !16
}
declare !dbg !4 dso_local void @call2(i32, i32)
attributes #0 = { nounwind uwtable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9, !10}
!llvm.ident = !{!11}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "worklist.c", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "call2", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 7, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 11.0.0"}
!12 = distinct !DISubprogram(name: "move_around_args", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!13 = !DISubroutineType(types: !14)
!14 = !{null, !7}
!15 = !DILocation(line: 4, scope: !12)
!16 = !DILocation(line: 5, scope: !12)
...
---
name: move_around_args
liveins:
- { reg: '$edi' }
callSites:
- { bb: 0, offset: 12, fwdArgRegs:
- { arg: 0, reg: '$edi' }
- { arg: 1, reg: '$esi' } }
body: |
bb.0.entry:
liveins: $edi
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
$esi = MOV32ri 123
; Move the values around between different registers.
$edx = MOV32rr $edi
$edi = MOV32rr $esi
$esi = MOV32rr $edx
$edx = MOV32rr $edi
$eax = MOV32rr $esi
$esi = MOV32rr $edx
$edx = MOV32rr $eax
$edi = MOV32rr $esi
$esi = MOV32rr $edx
CALL64pcrel32 @call2, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit-def $rsp, implicit-def $ssp, debug-location !15
$rax = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16
CFI_INSTRUCTION def_cfa_offset 8, debug-location !16
RET64 debug-location !16
...
# Verify that we emit correct call site parameter entries even after moving
# around the call site values between different registers.
#
# This test uses an implicit CHECK-NOT to verify that only two call site
# parameter entries are emitted.
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_constu 0x7b)
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg5 RDI))
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