mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 04:22:57 +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
39 lines
1.8 KiB
LLVM
39 lines
1.8 KiB
LLVM
; RUN: llvm-link %s %p/2011-08-04-Metadata2.ll -o %t.bc
|
|
; RUN: llvm-dis < %t.bc | FileCheck %s
|
|
; Test if internal global variable's debug info is merged appropriately or not.
|
|
|
|
; CHECK: !DIGlobalVariable(name: "x",
|
|
; CHECK-NOT: linkageName:
|
|
; CHECK-SAME: variable: i32* @x{{[,)]}}
|
|
; CHECK: !DIGlobalVariable(name: "x",
|
|
; CHECK-NOT: linkageName:
|
|
; CHECK-SAME: variable: i32* @x.1{{[,)]}}
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
target triple = "x86_64-apple-macosx10.7.0"
|
|
|
|
@x = internal global i32 0, align 4
|
|
|
|
define void @foo() nounwind uwtable ssp !dbg !1 {
|
|
entry:
|
|
store i32 1, i32* @x, align 4, !dbg !7
|
|
ret void, !dbg !7
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!11}
|
|
!llvm.dbg.sp = !{!1}
|
|
!llvm.dbg.gv = !{!5}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !9, enums: !{}, retainedTypes: !{}, subprograms: !10)
|
|
!1 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !9, scope: !2, type: !3)
|
|
!2 = !DIFile(filename: "/tmp/one.c", directory: "/Volumes/Lalgate/Slate/D")
|
|
!3 = !DISubroutineType(types: !4)
|
|
!4 = !{null}
|
|
!5 = !DIGlobalVariable(name: "x", line: 2, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !6, variable: i32* @x)
|
|
!6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!7 = !DILocation(line: 3, column: 14, scope: !8)
|
|
!8 = distinct !DILexicalBlock(line: 3, column: 12, file: !9, scope: !1)
|
|
!9 = !DIFile(filename: "/tmp/one.c", directory: "/Volumes/Lalgate/Slate/D")
|
|
!10 = !{!1}
|
|
!11 = !{i32 1, !"Debug Info Version", i32 3}
|