mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-25 22:12:57 +02:00
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
24 lines
930 B
LLVM
24 lines
930 B
LLVM
; RUN: llc -mtriple x86_64-pc-linux-gnu < %s | FileCheck %s
|
|
|
|
; CHECK: .long .Lline_table_start0 # DW_AT_stmt_list
|
|
|
|
; CHECK: .section .debug_line,"",@progbits
|
|
; CHECK-NEXT: .Lline_table_start0:
|
|
|
|
define void @f() !dbg !0 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!7}
|
|
!5 = !{!0}
|
|
|
|
!0 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !6, scope: !1, type: !3)
|
|
!1 = !DIFile(filename: "test2.c", directory: "/home/espindola/llvm")
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !6, enums: !{}, retainedTypes: !{}, subprograms: !5)
|
|
!3 = !DISubroutineType(types: !4)
|
|
!4 = !{null}
|
|
!6 = !DIFile(filename: "test2.c", directory: "/home/espindola/llvm")
|
|
!7 = !{i32 1, !"Debug Info Version", i32 3}
|