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clang-p2996/llvm/test/DebugInfo/duplicate_dbgvalue.ll
Stephen Tozer 094572701d [RemoveDIs] Print IR with debug records by default (#91724) 
This patch makes the final major change of the RemoveDIs project, changing the
default IR output from debug intrinsics to debug records. This is expected to
break a large number of tests: every single one that tests for uses or
declarations of debug intrinsics and does not explicitly disable writing
records. 

If this patch has broken your downstream tests (or upstream tests on a
configuration I wasn't able to run):
1. If you need to immediately unblock a build, pass
`--write-experimental-debuginfo=false` to LLVM's option processing for all
failing tests (remember to use `-mllvm` for clang/flang to forward arguments to
LLVM).
2. For most test failures, the changes are trivial and mechanical, enough that
they can be done by script; see the migration guide for a guide on how to do
this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates
3. If any tests fail for reasons other than FileCheck check lines that need
updating, such as assertion failures, that is most likely a real bug with this
patch and should be reported as such.

For more information, see the recent PSA:
https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
2024-06-14 15:07:27 +01:00

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; RUN: opt -passes=instcombine -S -o - < %s | FileCheck %s
; RUN: opt --try-experimental-debuginfo-iterators -passes=instcombine -S -o - < %s | FileCheck %s
; CHECK-LABEL: %3 = load i32, ptr %i1_311
; CHECK: #dbg_value(i32 %3
; Next instruction should not be duplicate dbg.value intrinsic.
; CHECK-NEXT: @f90io_sc_i_ldw
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;program main
;integer :: res
; res = mfun()
; print *, res
;contains
; function mfun()
; integer :: i1
; i1 = 5
; mfun = fun(i1)
; write (*,*) i1
; end function
; function fun(a)
; integer, intent (in) :: a
; fun = a
; end function
;end program main
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; ModuleID = 'duplicate_dbgvalue.ll'
source_filename = "duplicate_dbgvalue.ll"
target datalayout = "e-p:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%struct.BSS1 = type <{ [4 x i8] }>
@.BSS1 = internal unnamed_addr global %struct.BSS1 zeroinitializer, align 32, !dbg !0
@.C303_MAIN_ = internal constant i32 6
@.C300_MAIN_ = internal constant [22 x i8] c"duplicate_dbgvalue.f90"
@.C302_MAIN_ = internal constant i32 4
@.C283_MAIN_ = internal constant i32 0
@.C283_main_mfun = internal constant i32 0
@.C302_main_mfun = internal constant i32 6
@.C300_main_mfun = internal constant [22 x i8] c"duplicate_dbgvalue.f90"
@.C313_main_mfun = internal constant i32 10
define void @MAIN_() local_unnamed_addr !dbg !2 {
L.entry:
call void (ptr, ...) @fort_init(ptr @.C283_MAIN_), !dbg !16
%0 = call fastcc i32 @main_mfun(), !dbg !18
store i32 %0, ptr @.BSS1, align 32, !dbg !18
call void (ptr, ptr, i64, ...) @f90io_src_info03a(ptr @.C302_MAIN_, ptr @.C300_MAIN_, i64 22), !dbg !23
%1 = call i32 (ptr, ptr, ptr, ptr, ...) @f90io_print_init(ptr @.C303_MAIN_, ptr null, ptr @.C283_MAIN_, ptr @.C283_MAIN_), !dbg !23
call void @llvm.dbg.value(metadata i32 %1, metadata !24, metadata !DIExpression()), !dbg !25
%2 = load i32, ptr @.BSS1, align 32, !dbg !23
%3 = call i32 (i32, i32, ...) @f90io_sc_i_ldw(i32 %2, i32 25), !dbg !23
call void @llvm.dbg.value(metadata i32 %3, metadata !24, metadata !DIExpression()), !dbg !25
%4 = call i32 (...) @f90io_ldw_end(), !dbg !23
call void @llvm.dbg.value(metadata i32 %4, metadata !24, metadata !DIExpression()), !dbg !25
ret void, !dbg !26
}
define internal fastcc signext i32 @main_mfun() unnamed_addr !dbg !27 {
L.entry:
%i1_311 = alloca i32, align 4
call void @llvm.dbg.declare(metadata ptr undef, metadata !31, metadata !DIExpression()), !dbg !33
call void @llvm.dbg.declare(metadata ptr %i1_311, metadata !35, metadata !DIExpression()), !dbg !33
store i32 5, ptr %i1_311, align 4, !dbg !36
%0 = call fastcc float @main_fun(ptr %i1_311), !dbg !41
%1 = fptosi float %0 to i32, !dbg !41
call void (ptr, ptr, i64, ...) @f90io_src_info03a(ptr @.C313_main_mfun, ptr @.C300_main_mfun, i64 22), !dbg !42
%2 = call i32 (ptr, ptr, ptr, ptr, ...) @f90io_print_init(ptr @.C302_main_mfun, ptr null, ptr @.C283_main_mfun, ptr @.C283_main_mfun), !dbg !42
call void @llvm.dbg.value(metadata i32 %2, metadata !43, metadata !DIExpression()), !dbg !33
%3 = load i32, ptr %i1_311, align 4, !dbg !42
call void @llvm.dbg.value(metadata i32 %3, metadata !35, metadata !DIExpression()), !dbg !33
%4 = call i32 (i32, i32, ...) @f90io_sc_i_ldw(i32 %3, i32 25), !dbg !42
call void @llvm.dbg.value(metadata i32 %4, metadata !43, metadata !DIExpression()), !dbg !33
%5 = call i32 (...) @f90io_ldw_end(), !dbg !42
call void @llvm.dbg.value(metadata i32 %5, metadata !43, metadata !DIExpression()), !dbg !33
ret i32 %1, !dbg !44
}
define internal fastcc float @main_fun(ptr noalias %a) unnamed_addr !dbg !45 {
L.entry:
call void @llvm.dbg.declare(metadata ptr %a, metadata !50, metadata !DIExpression()), !dbg !51
call void @llvm.dbg.declare(metadata ptr undef, metadata !53, metadata !DIExpression()), !dbg !51
%0 = load i32, ptr %a, align 4, !dbg !54
%1 = sitofp i32 %0 to float, !dbg !54
ret float %1, !dbg !59
}
declare signext i32 @f90io_ldw_end(...) local_unnamed_addr
declare signext i32 @f90io_sc_i_ldw(...) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.declare(metadata, metadata, metadata)
declare signext i32 @f90io_print_init(...) local_unnamed_addr
declare void @f90io_src_info03a(...) local_unnamed_addr
declare void @fort_init(...) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.module.flags = !{!14, !15}
!llvm.dbg.cu = !{!4}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "res", scope: !2, file: !3, type: !9, isLocal: true, isDefinition: true)
!2 = distinct !DISubprogram(name: "main", scope: !4, file: !3, line: 1, type: !12, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagMainSubprogram, unit: !4)
!3 = !DIFile(filename: "duplicate-dbgvalue.f90", directory: "/dir")
!4 = distinct !DICompileUnit(language: DW_LANG_Fortran90, file: !3, producer: " F90 Flang - 1.5", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !5, retainedTypes: !5, globals: !6, imports: !5)
!5 = !{}
!6 = !{!0, !7, !10}
!7 = !DIGlobalVariableExpression(var: !8, expr: !DIExpression())
!8 = distinct !DIGlobalVariable(name: "res", scope: !4, file: !3, type: !9, isLocal: true, isDefinition: true)
!9 = !DIBasicType(name: "integer", size: 32, align: 32, encoding: DW_ATE_signed)
!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
!11 = distinct !DIGlobalVariable(name: "res", scope: !4, file: !3, type: !9, isLocal: true, isDefinition: true)
!12 = !DISubroutineType(cc: DW_CC_program, types: !13)
!13 = !{null}
!14 = !{i32 2, !"Dwarf Version", i32 4}
!15 = !{i32 2, !"Debug Info Version", i32 3}
!16 = !DILocation(line: 1, column: 1, scope: !17)
!17 = !DILexicalBlock(scope: !2, file: !3, line: 1, column: 1)
!18 = !DILocation(line: 3, column: 1, scope: !17)
!19 = !{!20, !20, i64 0}
!20 = !{!"t1.2", !21, i64 0}
!21 = !{!"unlimited ptr", !22, i64 0}
!22 = !{!"Flang FAA 1"}
!23 = !DILocation(line: 4, column: 1, scope: !17)
!24 = !DILocalVariable(scope: !17, file: !3, type: !9, flags: DIFlagArtificial)
!25 = !DILocation(line: 0, scope: !17)
!26 = !DILocation(line: 5, column: 1, scope: !17)
!27 = distinct !DISubprogram(name: "mfun", scope: !2, file: !3, line: 6, type: !28, scopeLine: 6, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !4)
!28 = !DISubroutineType(types: !29)
!29 = !{!30}
!30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
!31 = !DILocalVariable(arg: 1, scope: !27, file: !3, type: !32, flags: DIFlagArtificial)
!32 = !DIBasicType(name: "uinteger*8", size: 64, align: 64, encoding: DW_ATE_unsigned)
!33 = !DILocation(line: 0, scope: !34)
!34 = !DILexicalBlock(scope: !27, file: !3, line: 6, column: 1)
!35 = !DILocalVariable(name: "i1", scope: !34, file: !3, type: !9)
!36 = !DILocation(line: 8, column: 1, scope: !34)
!37 = !{!38, !38, i64 0}
!38 = !{!"t2.2", !39, i64 0}
!39 = !{!"unlimited ptr", !40, i64 0}
!40 = !{!"Flang FAA 2"}
!41 = !DILocation(line: 9, column: 1, scope: !34)
!42 = !DILocation(line: 10, column: 1, scope: !34)
!43 = !DILocalVariable(scope: !34, file: !3, type: !9, flags: DIFlagArtificial)
!44 = !DILocation(line: 11, column: 1, scope: !34)
!45 = distinct !DISubprogram(name: "fun", scope: !2, file: !3, line: 12, type: !46, scopeLine: 12, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !4)
!46 = !DISubroutineType(types: !47)
!47 = !{!48, !9}
!48 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !49, size: 64, align: 64)
!49 = !DIBasicType(name: "real", size: 32, align: 32, encoding: DW_ATE_float)
!50 = !DILocalVariable(name: "a", arg: 1, scope: !45, file: !3, type: !9)
!51 = !DILocation(line: 0, scope: !52)
!52 = !DILexicalBlock(scope: !45, file: !3, line: 12, column: 1)
!53 = !DILocalVariable(arg: 2, scope: !45, file: !3, type: !32, flags: DIFlagArtificial)
!54 = !DILocation(line: 14, column: 1, scope: !52)
!55 = !{!56, !56, i64 0}
!56 = !{!"t3.2", !57, i64 0}
!57 = !{!"unlimited ptr", !58, i64 0}
!58 = !{!"Flang FAA 3"}
!59 = !DILocation(line: 15, column: 1, scope: !52)
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