mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-25 14:30:32 +00:00
d329ef5a3c
This reverts commit r198398, thus reapplying r198397. I had accidentally introduced an endianness issue when applying the hash to the type unit. Using support::ulittle64_t in the reinterpret_cast in addDwarfTypeUnitType fixes this issue. Original commit message: Debug Info: Type Units: Simplify type hashing using IR-provided unique names. What's good for LTO metadata size problems ought to be good for non-LTO debug info size too, so let's rely on the same uniqueness in both cases. If it's insufficient for non-LTO for whatever reason (since we now won't be uniquing CU-local types or any C types - but these are likely to not be the most significant contributors to type bloat) we should consider a frontend solution that'll help both LTO and non-LTO alike, rather than using DWARF-level DIE-hashing that only helps non-LTO debug info size. It's also much simpler this way and benefits C++ even more since we can deduplicate lexically separate definitions of the same C++ type since they have the same mangled name. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198436 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
1.6 KiB
LLVM
30 lines
1.6 KiB
LLVM
; REQUIRES: object-emission
|
|
|
|
; RUN: llc -o - %s -filetype=obj -O0 -generate-dwarf-pub-sections=Disable -generate-type-units -mtriple=x86_64-unknown-linux-gnu | llvm-dwarfdump -debug-dump=types - | FileCheck %s
|
|
|
|
; struct foo {
|
|
; } f;
|
|
|
|
; no known LLVM frontends produce appropriate unique identifiers for C types,
|
|
; so we don't produce type units for them
|
|
; CHECK-NOT: DW_TAG_type_unit
|
|
|
|
%struct.foo = type {}
|
|
|
|
@f = common global %struct.foo zeroinitializer, align 1
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!7, !8}
|
|
!llvm.ident = !{!9}
|
|
|
|
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !3, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/simple.c] [DW_LANG_C99]
|
|
!1 = metadata !{metadata !"simple.c", metadata !"/tmp/dbginfo"}
|
|
!2 = metadata !{i32 0}
|
|
!3 = metadata !{metadata !4}
|
|
!4 = metadata !{i32 786484, i32 0, null, metadata !"f", metadata !"f", metadata !"", metadata !5, i32 2, metadata !6, i32 0, i32 1, %struct.foo* @f, null} ; [ DW_TAG_variable ] [f] [line 2] [def]
|
|
!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/simple.c]
|
|
!6 = metadata !{i32 786451, metadata !1, null, metadata !"foo", i32 1, i64 0, i64 8, i32 0, i32 0, null, metadata !2, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [foo] [line 1, size 0, align 8, offset 0] [def] [from ]
|
|
!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
|
|
!8 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
|
|
!9 = metadata !{metadata !"clang version 3.5 "}
|