mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-25 05:52:53 +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
57 lines
2.6 KiB
LLVM
57 lines
2.6 KiB
LLVM
; RUN: echo '!16 = !{!"%/T/global-ctor.ll", !0}' > %t1
|
|
; RUN: cat %s %t1 > %t2
|
|
; RUN: opt -insert-gcov-profiling -disable-output < %t2
|
|
; RUN: not grep '_GLOBAL__sub_I_global-ctor' %T/global-ctor.gcno
|
|
; RUN: rm %T/global-ctor.gcno
|
|
|
|
@x = global i32 0, align 4
|
|
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_global-ctor.ll, i8* null }]
|
|
|
|
; Function Attrs: nounwind
|
|
define internal void @__cxx_global_var_init() #0 section ".text.startup" !dbg !4 {
|
|
entry:
|
|
br label %0
|
|
|
|
; <label>:0 ; preds = %entry
|
|
%call = call i32 @_Z1fv(), !dbg !13
|
|
store i32 %call, i32* @x, align 4, !dbg !13
|
|
ret void, !dbg !13
|
|
}
|
|
|
|
declare i32 @_Z1fv() #1
|
|
|
|
; Function Attrs: nounwind
|
|
define internal void @_GLOBAL__sub_I_global-ctor.ll() #0 section ".text.startup" {
|
|
entry:
|
|
br label %0
|
|
|
|
; <label>:0 ; preds = %entry
|
|
call void @__cxx_global_var_init(), !dbg !14
|
|
ret void, !dbg !14
|
|
}
|
|
|
|
attributes #0 = { nounwind }
|
|
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!10, !11}
|
|
!llvm.gcov = !{!16}
|
|
!llvm.ident = !{!12}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 210217)", isOptimized: false, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "<stdin>", directory: "/home/nlewycky")
|
|
!2 = !{}
|
|
!3 = !{!4, !8}
|
|
!4 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !5, scope: !6, type: !7, variables: !2)
|
|
!5 = !DIFile(filename: "global-ctor.ll", directory: "/home/nlewycky")
|
|
!6 = !DIFile(filename: "global-ctor.ll", directory: "/home/nlewycky")
|
|
!7 = !DISubroutineType(types: !2)
|
|
!8 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_global-ctor.ll", isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, file: !1, scope: !9, type: !7, variables: !2)
|
|
!9 = !DIFile(filename: "<stdin>", directory: "/home/nlewycky")
|
|
!10 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!11 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!12 = !{!"clang version 3.5.0 (trunk 210217)"}
|
|
!13 = !DILocation(line: 2, scope: !4)
|
|
!14 = !DILocation(line: 0, scope: !15)
|
|
!15 = !DILexicalBlockFile(discriminator: 0, file: !5, scope: !8)
|