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Zvi Rackover 9ca8e1a54b [X86] Optimization for replacing LEA with MOV at frame index elimination time 
Summary:
Replace a LEA instruction of the form 'lea (%esp), %ebx' --> 'mov %esp, %ebx'

MOV is preferable over LEA because usually there are more issue-slots available to execute MOVs than LEAs. Latest processors also support zero-latency MOVs.

Fixes pr29022.

Reviewers: hfinkel, delena, igorb, myatsina, mkuper

Differential Revision: https://reviews.llvm.org/D24705

llvm-svn: 282385
2016-09-26 06:42:07 +00:00
bindings Formatting with clang-format patch r280700 2016-09-06 17:03:02 +00:00
cmake cmake: Support overriding Sphinx HTML doc install directory 2016-09-23 11:09:33 +00:00
docs cmake: Support overriding Sphinx HTML doc install directory 2016-09-23 11:09:33 +00:00
examples [Kaleidoscope] Make Chapter 2 use llvm::make_unique, rather than a helper. 2016-09-19 23:00:27 +00:00
include [X86][avx512] Fix bug in masked compress store. 2016-09-26 06:22:08 +00:00
lib [X86] Optimization for replacing LEA with MOV at frame index elimination time 2016-09-26 06:42:07 +00:00
projects Enable in-tree builds of parallel-libs. 2016-09-09 21:34:12 +00:00
resources
runtimes [CMake] Fixing lit for runtimes directory 2016-09-15 06:14:13 +00:00
test [X86] Optimization for replacing LEA with MOV at frame index elimination time 2016-09-26 06:42:07 +00:00
tools llc: Add -start-before/-stop-before options 2016-09-23 21:46:02 +00:00
unittests [PM] Refactor this unittest a bit to remove duplicated code. This was 2016-09-26 06:29:21 +00:00
utils [utils] Teach the code coverage prep script about --restrict 2016-09-22 21:49:49 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: ignore VS Code editor files 2016-09-02 22:54:26 +00:00
CMakeLists.txt Try to fix a circular dependency in the modules build. 2016-09-06 20:16:19 +00:00
CODE_OWNERS.TXT Take ownership of libLTO as discussed on llvm-dev. 2016-09-15 17:42:39 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Shamelessly add myself to CREDITS.TXT 2016-08-04 16:28:22 +00:00
LICENSE.TXT Remove autoconf references from LICENSE.TXT 2016-08-12 20:11:03 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Revert rL277454 2016-08-02 13:26:07 +00:00
RELEASE_TESTERS.TXT Adding RELEASE_TESTERS.TXT 2016-07-21 16:46:44 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

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.