# RUN: llc %s -o - -run-pass=removeredundantdebugvalues | FileCheck --implicit-check-not=DBG_VALUE %s
## This checks that the RemoveRedundantDebugValues removes redundant
## DBG_VALUEs. The MIR was hand-written, and foo{[2-6]}() are just
## copies of foo(), with an extra instruction that modifies the $edi register
## and extra (artificial) DBG_VALUE and DBG_VALUE_LIST instructions.
# CHECK-LABEL: foo
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE $edi
# CHECK-NOT: DBG_VALUE $edi
# CHECK: frame-setup PUSH64r
# CHECK: MOV32mr $rip, 1, $noreg
# CHECK-NOT: DBG_VALUE $edi
# CHECK-LABEL: foo6
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE 0
# CHECK: DBG_VALUE 1
# CHECK: frame-setup PUSH64r
# CHECK-LABEL: foo2
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE $edi
# CHECK: MOV32mr $rip, 1, $noreg
# CHECK: DBG_VALUE $edi
# CHECK-LABEL: foo3
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
# CHECK: DBG_VALUE $esi, {{.*}}, !DIExpression()
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
# CHECK-LABEL: foo4
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
# CHECK: DBG_VALUE_LIST !{{.*}}
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
# CHECK-LABEL: foo5
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
# CHECK: DBG_VALUE 0, {{.*}}, !DIExpression()
# CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
--- |
; ModuleID = 'test.ll'
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"
@side_effect = external dso_local local_unnamed_addr global i32, align 4
@value = external dso_local local_unnamed_addr global i32, align 4
; Function Attrs: nounwind uwtable
define dso_local i32 @foo(i32 %param) local_unnamed_addr !dbg !8 {
entry:
call void @llvm.dbg.value(metadata i32 %param, metadata !13, metadata !DIExpression()), !dbg !14
store i32 %param, i32* @side_effect, align 4, !dbg !15
%0 = load i32, i32* @value, align 4, !dbg !20
call void @llvm.dbg.value(metadata i32 %0, metadata !13, metadata !DIExpression()), !dbg !14
tail call void @bar(i32 %0), !dbg !21
ret i32 0, !dbg !22
}
define dso_local i32 @foo6(i32 %param) local_unnamed_addr !dbg !34 {
entry:
store i32 %param, i32* @side_effect, align 4, !dbg !35
%0 = load i32, i32* @value, align 4, !dbg !35
tail call void @bar(i32 %0), !dbg !35
ret i32 0, !dbg !35
}
; Function Attrs: nounwind uwtable
define dso_local i32 @foo2(i32 %param) local_unnamed_addr !dbg !26 {
entry:
store i32 %param, i32* @side_effect, align 4, !dbg !27
%0 = load i32, i32* @value, align 4, !dbg !27
tail call void @bar(i32 %0), !dbg !27
ret i32 0, !dbg !27
}
; Function Attrs: nounwind uwtable
define dso_local i32 @foo3(i32 %param) local_unnamed_addr !dbg !28 {
entry:
store i32 %param, i32* @side_effect, align 4, !dbg !29
%0 = load i32, i32* @value, align 4, !dbg !29
tail call void @bar(i32 %0), !dbg !29
ret i32 0, !dbg !29
}
; Function Attrs: nounwind uwtable
define dso_local i32 @foo4(i32 %param) local_unnamed_addr !dbg !30 {
entry:
store i32 %param, i32* @side_effect, align 4, !dbg !31
%0 = load i32, i32* @value, align 4, !dbg !31
tail call void @bar(i32 %0), !dbg !31
ret i32 0, !dbg !31
}
; Function Attrs: nounwind uwtable
define dso_local i32 @foo5(i32 %param) local_unnamed_addr !dbg !32 {
entry:
store i32 %param, i32* @side_effect, align 4, !dbg !33
%0 = load i32, i32* @value, align 4, !dbg !33
tail call void @bar(i32 %0), !dbg !33
ret i32 0, !dbg !33
}
declare !dbg !23 dso_local void @bar(i32) local_unnamed_addr
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "test.c", directory: "/dir")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 7, !"uwtable", i32 1}
!7 = !{!"clang version 13.0.0"}
!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!9 = !DISubroutineType(types: !10)
!10 = !{!11, !11}
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!12 = !{!13}
!13 = !DILocalVariable(name: "param", arg: 1, scope: !8, file: !1, line: 4, type: !11)
!14 = !DILocation(line: 0, scope: !8)
!15 = !DILocation(line: 5, column: 17, scope: !8)
!20 = !DILocation(line: 6, column: 13, scope: !8)
!21 = !DILocation(line: 7, column: 5, scope: !8)
!22 = !DILocation(line: 8, column: 5, scope: !8)
!23 = !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!24 = !DISubroutineType(types: !25)
!25 = !{null, !11}
!26 = distinct !DISubprogram(name: "foo2", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!27 = !DILocation(line: 0, scope: !26)
!28 = distinct !DISubprogram(name: "foo3", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!29 = !DILocation(line: 0, scope: !28)
!30 = distinct !DISubprogram(name: "foo4", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!31 = !DILocation(line: 0, scope: !30)
!32 = distinct !DISubprogram(name: "foo5", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!33 = !DILocation(line: 0, scope: !32)
!34 = distinct !DISubprogram(name: "foo6", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!35 = !DILocation(line: 0, scope: !34)
...
---
name: foo
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !21
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...
---
name: foo2
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
renamable $edi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value)
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !21
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...
---
name: foo3
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value)
DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !14
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...
---
name: foo4
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value)
DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value), $edi, $esi, debug-location !14
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...
---
name: foo5
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value)
DBG_VALUE 0, $noreg, !13, !DIExpression(), debug-location !14
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...
---
name: foo6
alignment: 16
liveins:
- { reg: '$edi', virtual-reg: '' }
body: |
bb.0.entry:
liveins: $edi, $esi
DBG_VALUE 0, $noreg, !13, !DIExpression(), debug-location !14
DBG_VALUE 1, $noreg, !13, !DIExpression(), debug-location !14
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect)
renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value)
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
RET64 killed $eax, debug-location !22
...