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12eb282f10
llvm-mirror/tools
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Reid Kleckner 12eb282f10 [Support] Move llvm::MemoryBuffer to sys::fs::file_t 
Summary:
On Windows, Posix integer file descriptors are a compatibility layer
over native file handles provided by the C runtime. There is a hard
limit on the maximum number of file descriptors that a process can open,
and the limit is 8192. LLD typically doesn't run into this limit because
it opens input files, maps them into memory, and then immediately closes
the file descriptor. This prevents it from running out of FDs.

For various reasons, I'd like to open handles to every input file and
keep them open during linking. That requires migrating MemoryBuffer over
to taking open native file handles instead of integer FDs.

Reviewers: aganea, Bigcheese

Reviewed By: aganea

Subscribers: smeenai, silvas, mehdi_amini, hiraditya, steven_wu, dexonsmith, dang, llvm-commits, zturner

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63453

llvm-svn: 365588
2019-07-10 00:34:13 +00:00
..
bugpoint [Bugpoint] fix another use-after-move. NFC 2019-05-31 21:36:21 +00:00
bugpoint-passes Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
dsymutil Cleanup: llvm::bsearch -> llvm::partition_point after r364719 2019-06-30 11:19:56 +00:00
gold [Remarks] Extend -fsave-optimization-record to specify the format 2019-06-17 16:06:00 +00:00
llc [Remarks] Extend -fsave-optimization-record to specify the format 2019-06-17 16:06:00 +00:00
lli [lli] Fix a typo in a header. 2019-07-02 18:39:32 +00:00
llvm-ar [llvm-ar] Document response file support in --help 2019-06-28 18:48:05 +00:00
llvm-as Make llvm-as --help great again 2019-05-27 08:24:06 +00:00
llvm-as-fuzzer Fix some include order and file headers issues. NFC 2019-02-21 07:42:31 +00:00
llvm-bcanalyzer [llvm-bcanalyzer] Refactor and move to libLLVMBitReader 2019-07-08 02:06:34 +00:00
llvm-c-test llvm-c-test avoid calling malloc(0) 2019-07-04 14:36:34 +00:00
llvm-cat Simplify llvm-cat help 2019-05-13 11:29:25 +00:00
llvm-cfi-verify Recommit [Object] Change object::SectionRef::getContents() to return Expected<StringRef> 2019-05-16 13:24:04 +00:00
llvm-config [cmake] Add function for building native tool 2019-04-02 15:58:03 +00:00
llvm-cov [llvm-cov[ Fix lcov coverage report contains functions from other compilation units. 2019-06-28 15:38:25 +00:00
llvm-cvtres Share /machine: handling code with llvm-cvtres too 2019-06-12 11:32:43 +00:00
llvm-cxxdump Break false dependencies on target libraries 2019-05-23 23:02:56 +00:00
llvm-cxxfilt [binutils] Add response file option to help and docs 2019-06-21 11:49:20 +00:00
llvm-cxxmap Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-diff Fix some include order and file headers issues. NFC 2019-02-21 07:42:31 +00:00
llvm-dis Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-dwarfdump [DwarfDebug] Dump call site debug info 2019-07-09 11:33:56 +00:00
llvm-dwp Fix BUILD_SHARED_LIBS builds after r361567 2019-05-24 02:15:27 +00:00
llvm-elfabi Fix some include order and file headers issues. NFC 2019-02-21 07:42:31 +00:00
llvm-exegesis fix a typo unavaliable=>unavailable 2019-06-08 15:07:55 +00:00
llvm-extract Sanitize llvm-extract -help output 2019-06-12 21:08:19 +00:00
llvm-go [tests][go]Add -stdlib=libc++ to build GO test if LLVM is built with libc++ 2019-05-16 13:32:55 +00:00
llvm-isel-fuzzer Break a couple more false dependencies on target libraries 2019-06-10 23:52:38 +00:00
llvm-itanium-demangle-fuzzer Fix file header issues in fuzzers. NFC 2019-02-21 07:57:14 +00:00
llvm-jitlink [JITLink][ORC] Add EHFrameRegistrar interface, use in EHFrameRegistrationPlugin. 2019-07-04 00:05:12 +00:00
llvm-jitlistener Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-link Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-lipo [MachO] Add valid architecture function 2019-07-04 00:17:02 +00:00
llvm-lto [ThinLTO]LTO]Legacy] Fix dependent libraries support by adding querying of the IRSymtab 2019-06-12 11:07:56 +00:00
llvm-lto2 [Remarks] Extend -fsave-optimization-record to specify the format 2019-06-17 16:06:00 +00:00
llvm-mc [DWARF] Make -g with empty assembler source work better. 2019-03-01 20:58:04 +00:00
llvm-mc-assemble-fuzzer Fix some include order and file headers issues. NFC 2019-02-21 07:42:31 +00:00
llvm-mc-disassemble-fuzzer Fix file header issues in fuzzers. NFC 2019-02-21 07:57:14 +00:00
llvm-mca [MCA][Bottleneck Analysis] Teach how to compute a critical sequence of instructions based on the simulation. 2019-06-21 13:32:54 +00:00
llvm-microsoft-demangle-fuzzer Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-modextract Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-mt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-nm [llvm-nm] Fix for BZ41711 - Class character for a symbol with undefined 2019-06-27 16:27:53 +00:00
llvm-objcopy [llvm-objcopy] Allow strip symtab from executables and DSOs 2019-07-05 12:10:44 +00:00
llvm-objdump [llvm-objdump] Keep warning for --disassemble-functions in correct order. 2019-07-09 21:53:33 +00:00
llvm-opt-fuzzer Break a couple more false dependencies on target libraries 2019-06-10 23:52:38 +00:00
llvm-opt-report [Remarks] Require an explicit format to the parser 2019-07-04 00:31:03 +00:00
llvm-pdbutil [PDB] Copy inlinee lines records into the PDB 2019-06-03 18:15:38 +00:00
llvm-profdata llvm-profdata] Handle the cases of overlapping input file and output file 2019-07-08 21:03:12 +00:00
llvm-rc Fix typos: (re)?sor?uce -> (re)?source 2019-04-26 05:56:23 +00:00
llvm-readobj [AMDGPU] gfx908 target 2019-07-09 18:10:06 +00:00
llvm-rtdyld Break false dependencies on target libraries 2019-05-23 23:02:56 +00:00
llvm-shlib [llvm-shlib] Do not use version script when building with MinGW 2019-06-25 19:34:52 +00:00
llvm-size [binutils] Add response file option to help and docs 2019-06-21 11:49:20 +00:00
llvm-special-case-list-fuzzer Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-split Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-stress Avoid cppcheck operator precedence warnings. NFCI. 2019-05-03 13:50:38 +00:00
llvm-strings [binutils] Add response file option to help and docs 2019-06-21 11:49:20 +00:00
llvm-symbolizer llvm-symbolizer: Add a FRAME command. 2019-06-24 20:03:23 +00:00
llvm-undname llvm-undname: Add a -raw-file flag to pass a raw buffer to microsoftDemangle 2019-04-16 12:51:40 +00:00
llvm-xray [Support] Move llvm::MemoryBuffer to sys::fs::file_t 2019-07-10 00:34:13 +00:00
llvm-yaml-numeric-parser-fuzzer Fix file header issues in fuzzers. NFC 2019-02-21 07:57:14 +00:00
lto [Legacy LTO] Fix build bots: r363140: Fix export name 2019-06-12 12:17:49 +00:00
msbuild vs integration: bump version nbr 2019-06-19 07:39:53 +00:00
obj2yaml [Object][XCOFF] Add support for 64-bit file header and section header dumping. 2019-07-09 18:09:11 +00:00
opt Revert "r364412 [ExpandMemCmp][MergeICmps] Move passes out of CodeGen into opt pipeline." 2019-06-26 12:13:13 +00:00
opt-viewer [opt-viewer] Teach optrecord.py about !Failure tags 2019-03-27 18:35:04 +00:00
remarks-shlib Reland "[Remarks] Add a new Remark / RemarkParser abstraction" 2019-03-19 21:11:07 +00:00
sancov [sancov] Avoid unnecessary unique_ptr 2019-06-24 10:23:47 +00:00
sanstats [DebugInfo] add SectionedAddress to DebugInfo interfaces. 2019-02-27 13:17:36 +00:00
verify-uselistorder Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
xcode-toolchain [CMake] Use LLVM_ENABLE_IDE instead of CMAKE_CONFIGURATION_TYPES 2018-10-15 21:20:02 +00:00
yaml2obj [yaml2obj] - Allow overriding sh_offset field from the YAML. 2019-07-02 10:20:12 +00:00
CMakeLists.txt Fix most of LLVM's tests with LLVM_ENABLE_PIC=OFF 2019-01-16 20:44:36 +00:00
LLVMBuild.txt [JITLink] Add llvm-jitlink subdirectory to tools/LLVMBuild.txt 2019-04-20 17:58:29 +00:00