maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/lld/ELF
History
Jianzhou Zhao 11201315d5 Flush bitcode incrementally for LTO output 
Bitcode writer does not flush buffer until the end by default. This is
fine to small bitcode files. When -flto,--plugin-opt=emit-llvm,-gmlt are
used, the final bitcode file is large, for example, >8G. Keeping all
data in memory consumes a lot of memory.

This change allows bitcode writer flush data to disk early when buffered
data size is above some threshold. This is only enabled when lld emits
LLVM bitcode.

One issue to address is backpatching bitcode: subblock length, function
body indexes, meta data indexes need to backfill. If buffer can be
flushed partially, we introduced raw_fd_stream that supports
read/seek/write, and enables backpatching bitcode flushed in disk.

Reviewed-by: tejohnson, MaskRay

Differential Revision: https://reviews.llvm.org/D86905
 		2020-09-17 03:32:31 +00:00
..
Arch [LLD][PowerPC] Add support for R_PPC64_TPREL34 used in TLS Local Exec 2020-09-15 09:06:19 -05:00
AArch64ErrataFix.cpp [ELF] Move the outSecOff addend from relocAlloc/relocNonAlloc/... to InputSectionBase::relocate 2020-08-11 08:06:38 -07:00
AArch64ErrataFix.h [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
ARMErrataFix.cpp [ELF] Move the outSecOff addend from relocAlloc/relocNonAlloc/... to InputSectionBase::relocate 2020-08-11 08:06:38 -07:00
ARMErrataFix.h [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
CMakeLists.txt [CMake] Make `intrinsics_gen` dependency unconditional. 2020-07-17 16:43:17 -07:00
CallGraphSort.cpp [COFF] Port CallGraphSort to COFF from ELF 2020-07-30 15:21:44 -07:00
CallGraphSort.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Config.h [LLD][PowerPC] Implement GOT to PC-Rel relaxation 2020-08-17 09:36:09 -05:00
DWARF.cpp [ELF] --gdb-index: skip SHF_GROUP .debug_info 2020-08-13 09:11:01 -07:00
DWARF.h [ELF] --gdb-index: skip SHF_GROUP .debug_info 2020-08-13 09:11:01 -07:00
Driver.cpp [lib/Object] - Refine interface of ELFFile<ELFT>. NFCI. 2020-09-15 11:38:31 +03:00
Driver.h [Coding style change] Rename variables so that they start with a lowercase letter 2019-07-10 05:00:37 +00:00
DriverUtils.cpp [ELF] Use namespace qualifiers (lld:: or elf::) instead of `namespace lld { namespace elf {` 2020-05-15 08:49:53 -07:00
EhFrame.cpp [ELF] Support .cfi_signal_frame 2020-08-07 22:08:44 -07:00
EhFrame.h [ELF] --icf: don't fold text sections with LSDA 2020-08-05 09:16:28 -07:00
ICF.cpp [ELF]: --icf: don't fold sections referencing sections with LCDA after D84610 2020-08-07 13:42:25 -07:00
ICF.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
InputFiles.cpp [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
InputFiles.h [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
InputSection.cpp [lib/Object] - Refine interface of ELFFile<ELFT>. NFCI. 2020-09-15 11:38:31 +03:00
InputSection.h [ELF] --icf: don't fold text sections with LSDA 2020-08-05 09:16:28 -07:00
LTO.cpp Flush bitcode incrementally for LTO output 2020-09-17 03:32:31 +00:00
LTO.h [Coding style change] Rename variables so that they start with a lowercase letter 2019-07-10 05:00:37 +00:00
LinkerScript.cpp [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
LinkerScript.h [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
MapFile.cpp [ELF] Use namespace qualifiers (lld:: or elf::) instead of `namespace lld { namespace elf {` 2020-05-15 08:49:53 -07:00
MapFile.h [ELF] Add --print-archive-stats= 2020-04-29 18:04:37 -07:00
MarkLive.cpp [LLD][ELF] Fix performance of MarkLive::scanEhFrameSection 2020-09-08 19:32:34 +01:00
MarkLive.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Options.td [ELF] Enforce two-dash form for some LLD specific options and the newer --[no-]pcrel-optimize 2020-08-17 10:00:31 -07:00
OutputSections.cpp [ELF] -r: allow SHT_X86_64_UNWIND to be merged into SHT_PROGBITS 2020-08-13 08:14:45 -07:00
OutputSections.h [ELF] Refactor uses of getInputSections to improve efficiency NFC 2020-01-21 12:27:52 +00:00
README.md
…
Relocations.cpp [lib/Object] - Refine interface of ELFFile<ELFT>. NFCI. 2020-09-15 11:38:31 +03:00
Relocations.h [LLD][ELF] Optimize linker script filename glob pattern matching NFC 2020-09-16 10:26:11 +01:00
ScriptLexer.cpp [LLD][ELF] - Linkerscript: report location for the "unclosed comment in a linker script" error. 2020-07-24 11:38:26 +03:00
ScriptLexer.h [LLD][ELF] - Linkerscript: report location for the "unclosed comment in a linker script" error. 2020-07-24 11:38:26 +03:00
ScriptParser.cpp [lld][linkerscript] Fix handling of DEFINED. 2020-07-28 21:18:01 +01:00
ScriptParser.h [ELF] Improve --export-dynamic-symbol performance by checking whether wildcard is really used 2020-06-17 17:12:10 -07:00
SymbolTable.cpp [ELF] --wrap: don't leave the original symbol as SHN_UNDEF in .symtab or .dynsym 2020-08-08 18:18:20 -07:00
SymbolTable.h [ELF] Replace SymbolTable::forEachSymbol with iterator_range symbols() 2019-11-26 09:09:32 -08:00
Symbols.cpp [ELF] Refine --export-dynamic-symbol semantics to be compatible GNU ld 2.35 2020-06-01 11:30:03 -07:00
Symbols.h [LLD][ELF] Implement --discard-* for cases when -r or --emit-relocs are used. 2020-04-25 18:59:41 +07:00
SyntheticSections.cpp [PowerPC] Fix thunk alignment issue when using pc-rel instruction 2020-08-17 09:09:36 -05:00
SyntheticSections.h [ELF] Handle SHT_RISCV_ATTRIBUTES similarly to SHT_ARM_ATTRIBUTES 2020-09-05 18:36:23 +01:00
Target.cpp [ELF] Use namespace qualifiers (lld:: or elf::) instead of `namespace lld { namespace elf {` 2020-05-15 08:49:53 -07:00
Target.h [ELF] Define a reportRangeError() overload for thunks and tidy up recent PPC64 thunk range errors 2020-09-14 09:55:59 -07:00
Thunks.cpp [ELF] Define a reportRangeError() overload for thunks and tidy up recent PPC64 thunk range errors 2020-09-14 09:55:59 -07:00
Thunks.h [ELF][PPC32] Implement IPLT code sequence for non-preemptible IFUNC 2019-12-29 22:42:53 -08:00
Writer.cpp [ELF] Bump the limit of thunk creation passes from 10 to 15 2020-09-16 14:05:22 -07:00
Writer.h Revert "Revert r370635, it caused PR43241." 2019-09-06 15:57:24 +00:00

README.md

See docs/NewLLD.rst