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llvm-project/llvm/test/DebugInfo/X86/discriminator3.ll

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Read discriminators correctly from object file. Summary: This is the follow-up patch for http://reviews.llvm.org/D19436 * Update the discriminator reading algorithm to match the assignment algorithm. * Add test to cover the new algorithm. Reviewers: dnovillo, echristo, dblaikie Subscribers: danielcdh, dblaikie, echristo, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19522 llvm-svn: 267945
2016-04-29 06:09:37 +08:00
; RUN: llc -mtriple=i386-unknown-unknown -mcpu=core2 %s -o %t -filetype=obj
llvm-dwarfdump: Replace -debug-dump=sect option with individual options. As discussed on llvm-dev in http://lists.llvm.org/pipermail/llvm-dev/2017-September/117301.html this changes the command line interface of llvm-dwarfdump to match the one used by the dwarfdump utility shipping on macOS. In addition to being shorter to type this format also has the advantage of allowing more than one section to be specified at the same time. In a nutshell, with this change $ llvm-dwarfdump --debug-dump=info $ llvm-dwarfdump --debug-dump=apple-objc becomes $ dwarfdump --debug-info --apple-objc Differential Revision: https://reviews.llvm.org/D37714 llvm-svn: 312970
2017-09-12 06:59:45 +08:00
; RUN: llvm-dwarfdump -debug-line %t | FileCheck %s
Read discriminators correctly from object file. Summary: This is the follow-up patch for http://reviews.llvm.org/D19436 * Update the discriminator reading algorithm to match the assignment algorithm. * Add test to cover the new algorithm. Reviewers: dnovillo, echristo, dblaikie Subscribers: danielcdh, dblaikie, echristo, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19522 llvm-svn: 267945
2016-04-29 06:09:37 +08:00
;
; Generated from:
;
; #1 void foo(int);
; #2 void baz(int i) {
; #3 if (i) {foo(i+1);/*discriminator 1*/}
; #4 }
;
; The intent is to test discriminator 1 generated for all instructions in
; the taken branch.
; Function Attrs: uwtable
define void @_Z3bazi(i32) #0 !dbg !6 {
%2 = alloca i32, align 4
store i32 %0, i32* %2, align 4
call void @llvm.dbg.declare(metadata i32* %2, metadata !10, metadata !11), !dbg !12
%3 = load i32, i32* %2, align 4, !dbg !13
%4 = icmp ne i32 %3, 0, !dbg !13
br i1 %4, label %5, label %8, !dbg !15
; <label>:5: ; preds = %1
%6 = load i32, i32* %2, align 4, !dbg !16
%7 = add nsw i32 %6, 1, !dbg !19
call void @_Z3fooi(i32 %7), !dbg !20
br label %8, !dbg !21
; <label>:8: ; preds = %5, %1
ret void, !dbg !22
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare void @_Z3fooi(i32) #2
attributes #0 = { uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
attributes #2 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 267518)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "test.cc", directory: ".")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{!"clang version 3.9.0 (trunk 267518)"}
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!6 = distinct !DISubprogram(name: "baz", linkageName: "_Z3bazi", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
Read discriminators correctly from object file. Summary: This is the follow-up patch for http://reviews.llvm.org/D19436 * Update the discriminator reading algorithm to match the assignment algorithm. * Add test to cover the new algorithm. Reviewers: dnovillo, echristo, dblaikie Subscribers: danielcdh, dblaikie, echristo, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19522 llvm-svn: 267945
2016-04-29 06:09:37 +08:00
!7 = !DISubroutineType(types: !8)
!8 = !{null, !9}
!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!10 = !DILocalVariable(name: "i", arg: 1, scope: !6, file: !1, line: 2, type: !9)
!11 = !DIExpression()
!12 = !DILocation(line: 2, column: 14, scope: !6)
!13 = !DILocation(line: 3, column: 7, scope: !14)
!14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7)
!15 = !DILocation(line: 3, column: 7, scope: !6)
!16 = !DILocation(line: 3, column: 15, scope: !17)
!17 = !DILexicalBlockFile(scope: !18, file: !1, discriminator: 1)
!18 = distinct !DILexicalBlock(scope: !14, file: !1, line: 3, column: 10)
!19 = !DILocation(line: 3, column: 16, scope: !17)
!20 = !DILocation(line: 3, column: 11, scope: !17)
!21 = !DILocation(line: 3, column: 21, scope: !17)
!22 = !DILocation(line: 4, column: 1, scope: !6)
; CHECK: Address Line Column File ISA Discriminator Flags
; CHECK: ------------------ ------ ------ ------ --- ------------- -------------
; CHECK: {{.*}} 3 15 1 0 1
; CHECK: {{.*}} 3 16 1 0 1
; CHECK: {{.*}} 3 11 1 0 1