mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 13:33:37 +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
609 B
LLVM
24 lines
609 B
LLVM
; RUN: not llvm-as %s -disable-output 2>&1 | FileCheck %s
|
|
|
|
define void @foo() !dbg !4 !dbg !4 {
|
|
unreachable
|
|
}
|
|
|
|
; CHECK-NOT: !dbg
|
|
; CHECK: function !dbg attachment must be a subprogram
|
|
; CHECK-NEXT: void ()* @bar
|
|
; CHECK-NEXT: !{{[0-9]+}} = !{}
|
|
define void @bar() !dbg !6 {
|
|
unreachable
|
|
}
|
|
|
|
!llvm.module.flags = !{!0}
|
|
!0 = !{i32 2, !"Debug Info Version", i32 3}
|
|
|
|
!llvm.dbg.cu = !{!1}
|
|
!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, subprograms: !3)
|
|
!2 = !DIFile(filename: "t.c", directory: "/path/to/dir")
|
|
!3 = !{!4}
|
|
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !2)
|
|
!6 = !{}
|