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* [llvm-objcopy] Adding support for decompressing zlib compressed dwarf sections.Puyan Lotfi2018-10-011-0/+14
| | | | | | | | | | | | | | | Summary: I had added support for compressing dwarf sections in a prior commit, this one adds support for decompressing. Usage is: llvm-objcopy --decompress-debug-sections input.o output.o Reviewers: jakehehrlich, jhenderson, alexshap Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D51841 llvm-svn: 343451
* [llvm-objcopy] Dwarf .debug section compression support (zlib, zlib-gnu).Puyan Lotfi2018-09-071-0/+49
| | | | | | | | | | | | | | | | | | | | | | | Third Attempt: - Alignment issues resolved. - zlib::isAvailable() detected. - ArrayRef misuse fixed. Usage: llvm-objcopy --compress-debug-sections=zlib foo.o llvm-objcopy --compress-debug-sections=zlib-gnu foo.o In both cases the debug section contents is compressed with zlib. In the GNU style case the header is the "ZLIB" magic string followed by the uint64 big- endian decompressed size. In the non-GNU mode the header is the Elf(32|64)_Chdr. Decompression support is coming soon. Differential Revision: https://reviews.llvm.org/D49678 llvm-svn: 341635
* Revert: [llvm-objcopy] Dwarf .debug section compression (Second Attempt).Puyan Lotfi2018-09-071-49/+0
| | | | | | Various bots still fail for unknown reason. llvm-svn: 341613
* [llvm-objcopy] Dwarf .debug section compression support (zlib, zlib-gnu).Puyan Lotfi2018-09-061-0/+49
| | | | | | | | | | | | | | | | | | | | Second Attempt. Alignment issues resolved. zlib::isAvailable() detected. Usage: llvm-objcopy --compress-debug-sections=zlib foo.o llvm-objcopy --compress-debug-sections=zlib-gnu foo.o In both cases the debug section contents is compressed with zlib. In the GNU style case the header is the "ZLIB" magic string followed by the uint64 big- endian decompressed size. In the non-GNU mode the header is the Elf(32|64)_Chdr. Decompression support is coming soon. Differential Revision: https://reviews.llvm.org/D49678 llvm-svn: 341607
* Revert r341342: Dwarf .debug section compression support (zlib, zlib-gnu).Chandler Carruth2018-09-041-49/+0
| | | | | | | | | | | | Also reverts follow-up commits r341343 and r341344. The primary commit continues to break some build bots even after the fixes in r341343 for UBSan issues: http://lab.llvm.org:8011/builders/clang-cmake-aarch64-full/builds/5823 It is also failing for me locally (linux, x86-64). llvm-svn: 341360
* [llvm-objcopy] Dwarf .debug section compression support (zlib, zlib-gnu).Puyan Lotfi2018-09-031-0/+49
Usage: llvm-objcopy --compress-debug-sections=zlib foo.o llvm-objcopy --compress-debug-sections=zlib-gnu foo.o In both cases the debug section contents is compressed with zlib. In the GNU style case the header is the "ZLIB" magic string followed by the uint64 big- endian decompressed size. In the non-GNU mode the header is the Elf(32|64)_Chdr. Decompression support is coming soon. Differential Revision: https://reviews.llvm.org/D49678 llvm-svn: 341342
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