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Peter Collingbourne 9c2679ba4a COFF: Do not create SectionChunks for discarded comdat sections.
With this change, instead of creating a SectionChunk for each section
in the object file, we only create them when we encounter a prevailing
comdat section.

Also change how symbol resolution occurs between comdat symbols. Now
only the comdat leader participates in comdat resolution, and not any
other external associated symbols. This is more in line with how COFF
semantics are defined, and should allow for a more straightforward
implementation of non-ANY comdat types.

On my machine, this change reduces our runtime linking a release
build of chrome_child.dll with /nopdb from 5.65s to 4.54s (median of
50 runs).

Differential Revision: https://reviews.llvm.org/D40238

llvm-svn: 319090
2017-11-27 20:42:34 +00:00
bindings Update go bindings to use new functions from rL317135. 2017-11-02 10:22:26 +00:00
cmake Use LIST_SEPARATOR rather than escaping in ExternalProject_Add 2017-11-27 20:41:53 +00:00
docs [XRay] Fix typo in docs. NFC 2017-11-27 16:59:26 +00:00
examples Fix broken links to the Itanium CXX ABI 2017-09-12 00:19:11 +00:00
include COFF: Do not create SectionChunks for discarded comdat sections. 2017-11-27 20:42:34 +00:00
lib [PowerPC] Remove redundant TOC saves 2017-11-27 20:26:36 +00:00
projects Re-revert "Refactor debuginfo-tests." 2017-11-21 01:20:28 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake][runtimes] Don't passthrough prefixes for non-default targets 2017-11-17 23:51:53 +00:00
test [PowerPC] Remove redundant TOC saves 2017-11-27 20:26:36 +00:00
tools Rename MCTargetOptionsCommandFlags.h to .def as it is not a normal/modular header as much as it is for stamping out some global/static variables 2017-11-27 19:55:16 +00:00
unittests Rename MCTargetOptionsCommandFlags.h to .def as it is not a normal/modular header as much as it is for stamping out some global/static variables 2017-11-27 19:55:16 +00:00
utils [utils][mips] Add support for mips for update_llc_checks.py 2017-11-26 19:22:44 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitattributes [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Re-revert "Refactor debuginfo-tests." 2017-11-21 01:20:28 +00:00
CODE_OWNERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Add myself to CREDITS.txt 2017-09-18 14:33:39 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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