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Simon Pilgrim 652fd662fd [DAG] reduceBuildVecExtToExtBuildVec - don't combine if it would break a splat. 
reduceBuildVecExtToExtBuildVec was breaking a splat(zext(x)) pattern into buildvector(x, 0, x, 0, ..) resulting in much more complex insert+shuffle codegen.

We already go to some lengths to avoid this in SimplifyDemandedVectorElts etc. when we encounter splat buildvectors.

It should be OK to fold all splat(aext(x)) patterns - we might need to tighten this if we find a case where we mustn't introduce a buildvector(x, undef, x, undef, ..) but I can't find one.

Fixes PR46461.
2020-06-27 11:03:57 +01:00
benchmarks
bindings Fix go bindings after FixedVectorType -> VectorType change. 2020-05-15 16:37:57 -07:00
cmake Revert "[llvm] Added support for stand-alone cmake object libraries." 2020-06-24 09:37:15 -07:00
docs [Docs] BitCodeFormat.rst: List missing attribute codes 2020-06-27 06:34:36 +00:00
examples [docs/examples] As part of using inclusive language within the llvm 2020-06-20 00:51:18 -07:00
include Error.h - GenericBinaryError - pass Twine arg by reference not value. 2020-06-27 10:12:20 +01:00
lib [DAG] reduceBuildVecExtToExtBuildVec - don't combine if it would break a splat. 2020-06-27 11:03:57 +01:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [libc++] Fix the runtimes build after making __config_site mandatory 2020-06-26 01:26:34 -04:00
test [DAG] reduceBuildVecExtToExtBuildVec - don't combine if it would break a splat. 2020-06-27 11:03:57 +01:00
tools [llvm-install-name-tool] Add support for -rpath option 2020-06-26 17:23:03 -07:00
unittests Fix unused type alias warning. NFC. 2020-06-27 10:43:10 +01:00
utils [MVT] Add missing floating point types for 1024/2048-bit vectors. 2020-06-25 21:13:31 +00:00
.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 [llvm] Release-mode ML InlineAdvisor 2020-06-24 08:18:42 -07:00
CODE_OWNERS.TXT Make myself code owner of InferAddressSpaces 2020-06-08 21:26:01 -04:00
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.