f1ca2a0967
--compress-sections <section-glib>=[none|zlib|zstd] is similar to --compress-debug-sections but applies to broader sections without the SHF_ALLOC flag. lld will report an error if a SHF_ALLOC section is matched. An interesting use case is to compress `.strtab`/`.symtab`, which consume a significant portion of the file size (15.1% for a release build of Clang). An older revision is available at https://reviews.llvm.org/D154641 . This patch focuses on non-allocated sections for safety. Moving `maybeCompress` as D154641 does not handle STT_SECTION symbols for `-r --compress-debug-sections=zlib` (see `relocatable-section-symbol.s` from #66804). Since different output sections may use different compression algorithms, we need CompressedData::type to generalize config->compressDebugSections. GNU ld feature request: https://sourceware.org/bugzilla/show_bug.cgi?id=27452 Link: https://discourse.llvm.org/t/rfc-compress-arbitrary-sections-with-ld-lld-compress-sections/71674 Pull Request: https://github.com/llvm/llvm-project/pull/84855
16 lines
730 B
ArmAsm
16 lines
730 B
ArmAsm
# REQUIRES: x86
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# UNSUPPORTED: zlib
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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# RUN: ld.lld %t.o --compress-debug-sections=zlib --compress-debug-sections=none -o /dev/null 2>&1 | count 0
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# RUN: not ld.lld %t.o --compress-debug-sections=zlib -o /dev/null 2>&1 | \
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# RUN: FileCheck %s --implicit-check-not=error:
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# RUN: not ld.lld %t.o --compress-sections=foo=zlib -o /dev/null 2>&1 | \
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# RUN: FileCheck %s --check-prefix=CHECK2 --implicit-check-not=error:
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# CHECK: error: --compress-debug-sections: LLVM was not built with LLVM_ENABLE_ZLIB or did not find zlib at build time
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# CHECK2: error: --compress-sections: LLVM was not built with LLVM_ENABLE_ZLIB or did not find zlib at build time
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.globl _start
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_start:
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