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Philip Reames 6fce828d58 [AST] Generalize argument specific aliasing 
AliasSetTracker has special case handling for memset, memcpy and memmove which pre-existed argmemonly on functions and readonly and writeonly on arguments. This patch generalizes it using the AA infrastructure to any call correctly annotated.

The motivation here is to cut down on confusion, not performance per se. For most instructions, there is a direct mapping to alias set. However, this is not guaranteed by the interface and was not in fact true for these three intrinsics *and only these three intrinsics*. I kept getting myself confused about this invariant, so I figured it would be good to clearly distinguish between a instructions and alias sets. Calls happened to be an easy target.

The nice side effect is that custom implementations of memset/memcpy/memmove - including wrappers discovered by IPO - can now be optimized the same as builts by LICM.

Note: The actual removal of the memset/memtransfer specific handling will happen in a follow on NFC patch.  It was originally part of this one, but separate for ease of review and rebase.

Differential Revision: https://reviews.llvm.org/D50730

llvm-svn: 341713
2018-09-07 21:36:11 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [Bindings][Go] Fixed go.test failure due to C-API argument type mismatch. 2018-09-07 17:33:43 +00:00
cmake [CMake] Fix LLVM_ENABLE_LTO option on Windows 2018-09-07 20:07:36 +00:00
docs [x86/SLH] Add a real Clang flag and LLVM IR attribute for Speculative 2018-09-04 12:38:00 +00:00
examples [ORC] Update JITCompileCallbackManager to support multi-threaded code. 2018-05-30 01:57:45 +00:00
include [AST] Generalize argument specific aliasing 2018-09-07 21:36:11 +00:00
lib [AST] Generalize argument specific aliasing 2018-09-07 21:36:11 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +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 Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test [AST] Generalize argument specific aliasing 2018-09-07 21:36:11 +00:00
tools [codeview] Improve readobj FPO dumper and pdbutil register names 2018-09-07 18:48:27 +00:00
unittests [Error] Reintroduce type validation in createFileError() 2018-09-07 18:32:59 +00:00
utils utils/abtest: Refactor and add bisection method 2018-09-07 17:08:44 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt [CMake] Provide a custom target to install LLVM libraries 2018-09-04 19:10:37 +00:00
CODE_OWNERS.TXT Add owner for llvm-objcopy 2018-08-09 22:05:19 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Update my information in the CREDITS file. 2018-06-15 20:02:11 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +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: remove a blank line 2018-06-08 21:21:55 +00:00
RELEASE_TESTERS.TXT Remove myself from the release testers list. (NFC) 2018-06-20 21:25:50 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
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Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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