# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s \
# RUN: -experimental-debug-variable-locations=true \
# RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREFLDV
#
# NB: clone of this test for VarLocBasedLDV is in
# entry-value-of-modified-param2.mir.
#
#extern void fn1 (int, int, int);
#
#__attribute__((noinline))
#int
#fn2 (int a, int b, int c) {
# int q = 2 + a;
#
# fn1 (5, 6, q);
#
# b = b + 7;
# if (b < 17)
# return 1;
# else
# return 0;
#}
#
# CHECK: ![[ARG_A:.*]] = !DILocalVariable(name: "a"
# CHECK: ![[ARG_B:.*]] = !DILocalVariable(name: "b"
# CHECK: ![[ARG_C:.*]] = !DILocalVariable(name: "c"
## TODO: Support KILL instruction, which doesn't clobber parameter value.
# CHECK: DBG_VALUE $edx, $noreg, ![[ARG_C]], !DIExpression(DW_OP_LLVM_entry_value, 1)
# INSTRREFLDV: DBG_VALUE $edi, $noreg, ![[ARG_A]], !DIExpression(DW_OP_LLVM_entry_value, 1)
# CHECK-NOT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1)
#
--- |
; ModuleID = 'test.c'
source_filename = "test.c"
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: noinline nounwind uwtable
define dso_local i32 @fn2(i32 %a, i32 %b, i32 %c) local_unnamed_addr !dbg !12 {
entry:
call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !20
call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression()), !dbg !20
call void @llvm.dbg.value(metadata i32 %c, metadata !18, metadata !DIExpression()), !dbg !20
%add = add nsw i32 %a, 2, !dbg !21
call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !20
tail call void @fn1(i32 5, i32 6, i32 %add), !dbg !22
call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression(DW_OP_plus_uconst, 7, DW_OP_stack_value)), !dbg !20
%cmp = icmp slt i32 %b, 10, !dbg !23
%. = zext i1 %cmp to i32, !dbg !25
ret i32 %., !dbg !26
}
declare !dbg !4 dso_local void @fn1(i32, i32, i32) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
!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 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "test.c", directory: "/dir")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 10.0.0"}
!12 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 5, type: !13, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
!13 = !DISubroutineType(types: !14)
!14 = !{!7, !7, !7, !7}
!15 = !{!16, !17, !18, !19}
!16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 5, type: !7)
!17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 5, type: !7)
!18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !1, line: 5, type: !7)
!19 = !DILocalVariable(name: "q", scope: !12, file: !1, line: 7, type: !7)
!20 = !DILocation(line: 0, scope: !12)
!21 = !DILocation(line: 7, column: 15, scope: !12)
!22 = !DILocation(line: 9, column: 5, scope: !12)
!23 = !DILocation(line: 12, column: 11, scope: !24)
!24 = distinct !DILexicalBlock(scope: !12, file: !1, line: 12, column: 9)
!25 = !DILocation(line: 0, scope: !24)
!26 = !DILocation(line: 16, column: 1, scope: !12)
...
---
name: fn2
alignment: 16
debugInstrRef: true
body: |
bb.0.entry:
liveins: $edi, $esi, $rbx
DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20
DBG_VALUE $esi, $noreg, !17, !DIExpression(), debug-location !20
DBG_VALUE $edx, $noreg, !18, !DIExpression(), debug-location !20
frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbx, -16
$ebx = MOV32rr $esi
DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20
renamable $edi = KILL $edi, implicit-def $rdi
DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20
renamable $edx = LEA64_32r killed renamable $rdi, 1, $noreg, 2, $noreg, debug-location !21
DBG_VALUE $edx, $noreg, !19, !DIExpression(), debug-location !20
$edi = MOV32ri 5, debug-location !22
$esi = MOV32ri 6, debug-location !22
CALL64pcrel32 @fn1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit-def $rsp, implicit-def $ssp, debug-location !22
DBG_VALUE $ebx, $noreg, !17, !DIExpression(DW_OP_plus_uconst, 7, DW_OP_stack_value), debug-location !20
renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !23
CMP32ri8 killed renamable $ebx, 10, implicit-def $eflags, debug-location !23
renamable $al = SETCCr 12, implicit killed $eflags, implicit killed $eax, implicit-def $eax, debug-location !23
$rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !26
CFI_INSTRUCTION def_cfa_offset 8, debug-location !26
RET64 $eax, debug-location !26
...
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