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5a42c7fbee
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OCHyams 5a42c7fbee [NFC] Fix performance issue in LiveDebugVariables 
When compiling AMDGPUDisassembler.cpp in a stage 1 trunk build with
CMAKE_BUILD_TYPE=RelWithDebInfo LLVM_USE_SANITIZER=Address LiveDebugVariables
accounts for 21.5% wall clock time. This fix reduces that to 1.2% by switching
out a linked list lookup with a map lookup.

Note that the linked list is still used to group UserValues by vreg. The vreg
lookups don't cause any problems in this pathological case.

This is the same idea as D68816, which was reverted, except that it is a less
intrusive fix.

Reviewed By: vsk

Differential Revision: https://reviews.llvm.org/D77226
2020-04-02 09:39:33 +01:00
benchmarks
bindings Add an SDK attribute to DICompileUnit 2020-03-11 14:14:06 -07:00
cmake [cmake] Only set deps for an ExternalProject if the type is executable or library 2020-04-01 23:29:01 -04:00
docs [llvm-exegesis] 'Min' repetition mode 2020-04-02 09:28:35 +03:00
examples [examples] Fixes for BUILD_SHARED_LIBS=on 2020-03-23 15:21:45 -07:00
include [Object] Add the method for checking if a section is a debug section 2020-04-02 10:56:00 +02:00
lib [NFC] Fix performance issue in LiveDebugVariables 2020-04-02 09:39:33 +01:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [runtimes] When COMPILER_RT is enabled, consider SANITIZER prefixes 2020-03-11 14:22:20 -07:00
test Fix RUN line in AArch64/speculation-hardening.ll 2020-04-02 09:42:15 +01:00
tools [llvm-exegesis] 'Min' repetition mode 2020-04-02 09:28:35 +03:00
unittests [RISCV] Support RISC-V ELF attributes sections in llvm-readobj. 2020-04-01 21:50:11 +08:00
utils [lit] Improve handling of timeouts and max failures 2020-04-02 01:24:02 -07:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Continue removing llgo. 2020-02-10 10:33:58 -08:00
CMakeLists.txt [cmake] Fix -stripped for umbrella library install targets 2020-03-20 18:46:48 -07:00
CODE_OWNERS.TXT Remove myself from CODE_OWNERS. 2020-02-25 11:59:29 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.