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| author | Martin Liska <mliska@suse.cz> | 2022-09-29 14:10:30 +0200 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2022-10-04 18:36:40 +1030 |
| commit | 7afbac7ddd7299491a88341149bc72b38173447a (patch) | |
| tree | 3ed76f9bc2d432a288e26691f32646ad06913d3a /gas/write.c | |
| parent | bb996692bd9654d6f2345ab65742796d5fde6829 (diff) | |
| download | fsf-binutils-gdb-7afbac7ddd7299491a88341149bc72b38173447a.zip fsf-binutils-gdb-7afbac7ddd7299491a88341149bc72b38173447a.tar.gz fsf-binutils-gdb-7afbac7ddd7299491a88341149bc72b38173447a.tar.bz2 | |
compress .gnu.debuglto_.debug_* sections if requested
Right now, when using LTO, the intermediate object files do contain
debug info in sections starting with .gnu.debuglto_ prefix and are
not compressed when --compress-debug-sections is used.
It's a mistake and we can save quite some disk space. The following
example comes from tramp3d when the corresponding LTO sections
are compressed with zlib:
$ bloaty tramp3d-v4-v2.o -- tramp3d-v4.o
FILE SIZE VM SIZE
-------------- --------------
+83% +10 [ = ] 0 [Unmapped]
-68.0% -441 [ = ] 0 .gnu.debuglto_.debug_line
-52.3% -759 [ = ] 0 .gnu.debuglto_.debug_line_str
-62.4% -3.24Ki [ = ] 0 .gnu.debuglto_.debug_abbrev
-64.8% -1.12Mi [ = ] 0 .gnu.debuglto_.debug_info
-88.8% -4.58Mi [ = ] 0 .gnu.debuglto_.debug_str
-27.7% -5.70Mi [ = ] 0 TOTAL
bfd/ChangeLog:
* elf.c (_bfd_elf_make_section_from_shdr): Compress all debug
info sections.
gas/ChangeLog:
* write.c (compress_debug): Compress also ".gnu.debuglto_.debug_"
if the compression algorithm is different from zlib-gnu.
Diffstat (limited to 'gas/write.c')
| -rw-r--r-- | gas/write.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gas/write.c b/gas/write.c index 0e49df7..b8d5253 100644 --- a/gas/write.c +++ b/gas/write.c @@ -1481,7 +1481,9 @@ compress_debug (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) return; section_name = bfd_section_name (sec); - if (!startswith (section_name, ".debug_")) + if (!startswith (section_name, ".debug_") + && (!startswith (section_name, ".gnu.debuglto_.debug_") + || flag_compress_debug == COMPRESS_DEBUG_GNU_ZLIB)) return; bool use_zstd = abfd->flags & BFD_COMPRESS_ZSTD; |