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Craig Topper ba18abf4c6 [LegalizeVectorTypes] When widening the operands to a concat_vectors, see if we can use the widened operand 0 if the width matches and the other operands are undef. 
This saves a conversion to extracts and build_vector. We already do this when both the result and the input need to be widened to the same type.

This changed the sse-intrinsics-fast-isel test because we don't lower (insert_vector_elt (scalar_to_vector X), Y, 1) well. We turn it into (vector_shuffle (scalar_to_vector X), (scalar_to_vector Y), <0, 4, 2, 3>) losing track of the fact that the upper elts could be undef.

We should probably find a way to prevent the scalarization of the <2 x f32> load on these tests.

llvm-svn: 344404
2018-10-12 19:37:49 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [bindings/go] Add Go bindings to the Token type 2018-09-28 17:39:59 +00:00
cmake [CMake] Temporarily remove the LLVM_ENABLE_IDE option 2018-10-11 04:06:14 +00:00
docs [doc] Update the programmer's manual about SmallSet's iterator 2018-10-04 12:33:33 +00:00
examples [ORC] Fix BuildingAJIT tutorial examples that were broken by r343059. 2018-09-26 04:00:58 +00:00
include Fix Wdocumentation warning. NFCI. 2018-10-12 19:30:43 +00:00
lib [LegalizeVectorTypes] When widening the operands to a concat_vectors, see if we can use the widened operand 0 if the width matches and the other operands are undef. 2018-10-12 19:37:49 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources
runtimes Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test [LegalizeVectorTypes] When widening the operands to a concat_vectors, see if we can use the widened operand 0 if the width matches and the other operands are undef. 2018-10-12 19:37:49 +00:00
tools [llvm-mca] Correctly set aliases for register writes introduced by optimized register moves. 2018-10-12 18:18:53 +00:00
unittests Make YAML quote forward slashes. 2018-10-12 16:31:20 +00:00
utils [tblgen][llvm-mca] Add the ability to describe move elimination candidates via tablegen. 2018-10-12 11:23:04 +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
.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 [WebAssembly] Add WebAssembly to LLVM_ALL_TARGETS 2018-10-03 23:56:52 +00:00
CODE_OWNERS.TXT Add owner for llvm-objcopy 2018-08-09 22:05:19 +00:00
configure
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
LLVMBuild.txt
README.txt Test commit. 2018-09-22 01:01:03 +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,
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.