mirror of
https://github.com/RPCSX/llvm.git
synced 2024-11-24 04:09:45 +00:00
4eeaa0da04
Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266446 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1.4 KiB
LLVM
35 lines
1.4 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
|
|
; RUN: verify-uselistorder %s
|
|
|
|
; CHECK: !named = !{!0, !1, !2, !3, !4, !4, !5, !6, !7, !7, !8}
|
|
!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9, !10}
|
|
|
|
!llvm.module.flags = !{!11}
|
|
!llvm.dbg.cu = !{!0}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
|
|
file: !1,
|
|
isOptimized: true, flags: "-O2",
|
|
splitDebugFilename: "abc.debug", emissionKind: 2)
|
|
!1 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
|
|
!2 = distinct !DISubprogram(name: "foo", scope: !1, unit: !0)
|
|
|
|
; CHECK: !3 = !DILexicalBlock(scope: !2, file: !1, line: 7, column: 35)
|
|
!3 = !DILexicalBlock(scope: !2, file: !1, line: 7, column: 35)
|
|
|
|
; CHECK: !4 = !DILexicalBlock(scope: !2)
|
|
!4 = !DILexicalBlock(scope: !2)
|
|
!5 = !DILexicalBlock(scope: !2, file: null, line: 0, column: 0)
|
|
|
|
; CHECK: !5 = !DILexicalBlockFile(scope: !3, file: !1, discriminator: 0)
|
|
; CHECK: !6 = !DILexicalBlockFile(scope: !3, file: !1, discriminator: 1)
|
|
!6 = !DILexicalBlockFile(scope: !3, file: !1, discriminator: 0)
|
|
!7 = !DILexicalBlockFile(scope: !3, file: !1, discriminator: 1)
|
|
|
|
; CHECK: !7 = !DILexicalBlockFile(scope: !3, discriminator: 7)
|
|
!8 = !DILexicalBlockFile(scope: !3, discriminator: 7)
|
|
!9 = !DILexicalBlockFile(scope: !3, file: null, discriminator: 7)
|
|
!10 = distinct !{}
|
|
|
|
!11 = !{i32 2, !"Debug Info Version", i32 3}
|