mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
fb3abba237
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> llvm-svn: 266446
22 lines
941 B
LLVM
22 lines
941 B
LLVM
; RUN: llc -filetype=obj -O0 < %s -mtriple x86_64-none-linux | \
|
|
; RUN: llvm-dwarfdump - 2>&1 | FileCheck %s
|
|
; RUN: llc -filetype=obj -O0 < %s -mtriple i386-none-linux | \
|
|
; RUN: llvm-dwarfdump - 2>&1 | FileCheck %s
|
|
; RUN: llc -filetype=obj -O0 < %s -mtriple x86_64-none-mingw32 | \
|
|
; RUN: llvm-dwarfdump - 2>&1 | FileCheck %s
|
|
; RUN: llc -filetype=obj -O0 < %s -mtriple i386-none-mingw32 | \
|
|
; RUN: llvm-dwarfdump - 2>&1 | FileCheck %s
|
|
|
|
; CHECK-NOT: failed to compute relocation
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4}
|
|
!llvm.ident = !{!5}
|
|
|
|
!0 = distinct !DICompileUnit(file: !1, language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, enums: !2, retainedTypes: !2, globals: !2, imports: !2, emissionKind: FullDebug)
|
|
!1 = !DIFile(filename: "empty.c", directory: "/a")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{!"clang version 3.6.0 "}
|