mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 11:42:57 +01:00
5b721561aa
Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
31 lines
1.5 KiB
LLVM
31 lines
1.5 KiB
LLVM
; RUN: llc -o /dev/null < %s
|
|
; PR7662
|
|
; Do not add variables to !11 because it is a declaration entry.
|
|
|
|
define i32 @bar() nounwind readnone ssp !dbg !0 {
|
|
entry:
|
|
ret i32 42, !dbg !9
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!15}
|
|
!llvm.dbg.sp = !{!0, !6, !11}
|
|
!llvm.dbg.lv.foo = !{!7}
|
|
|
|
!0 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !12, scope: !1, type: !3)
|
|
!1 = !DIFile(filename: "one.c", directory: "/private/tmp")
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang 2.8", isOptimized: true, emissionKind: 0, file: !12, enums: !14, retainedTypes: !14, subprograms: !13)
|
|
!3 = !DISubroutineType(types: !4)
|
|
!4 = !{!5}
|
|
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!6 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !12, scope: !1, type: !3)
|
|
!7 = !DILocalVariable(name: "one", line: 8, scope: !8, file: !1, type: !5)
|
|
!8 = distinct !DILexicalBlock(line: 7, column: 18, file: !12, scope: !6)
|
|
!9 = !DILocation(line: 4, column: 3, scope: !10)
|
|
!10 = distinct !DILexicalBlock(line: 3, column: 11, file: !12, scope: !0)
|
|
!11 = !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: true, isDefinition: false, virtualIndex: 6, isOptimized: true, file: !12, scope: !1, type: !3)
|
|
!12 = !DIFile(filename: "one.c", directory: "/private/tmp")
|
|
!13 = !{!0}
|
|
!14 = !{}
|
|
!15 = !{i32 1, !"Debug Info Version", i32 3}
|