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6f50c7fe4a
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Ahmed Bougacha 6f50c7fe4a [AArch64] Avoid partial register deps on insertelt of load into lane 0. 
This improves upon r246462: that prevented FMOVs from being emitted
for the cross-class INSERT_SUBREGs by disabling the formation of
INSERT_SUBREGs of LOAD.  But the ld1.s that we started selecting
caused us to introduce partial dependencies on the vector register.

Avoid that by using SCALAR_TO_VECTOR: it's a first-class citizen that
is folded away by many patterns, including the scalar LDRS that we
want in this case.

Credit goes to Adam for finding the issue!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299482 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-04 22:55:53 +00:00
bindings Go binding: Add GetCurrentDebugLocation to obtain debug location from builder 2017-03-31 04:59:57 +00:00
cmake Fix evaluation of LLVM_DEFINITIONS 2017-03-21 04:03:24 +00:00
docs Change section flag character for SHF_LINK_ORDER to "o". 2017-04-04 22:35:08 +00:00
examples llvm/examples/Kaleidoscope/BuildingAJIT: More fixup corresponding to r295636. 2017-02-20 10:07:41 +00:00
include [ExecutionDepsFix] Don't revisit true dependencies 2017-04-04 20:30:47 +00:00
lib [AArch64] Avoid partial register deps on insertelt of load into lane 0. 2017-04-04 22:55:53 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +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 [CMake] Support single target builtins build on Darwin 2017-03-24 02:21:11 +00:00
test [AArch64] Avoid partial register deps on insertelt of load into lane 0. 2017-04-04 22:55:53 +00:00
tools [PDB] Save one type record copy 2017-04-04 00:56:34 +00:00
unittests Implement host CPU detection for AArch64 2017-04-04 19:06:04 +00:00
utils [lit] Add a minimum export implementation. 2017-04-04 22:20:18 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +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] Update .gitignore to ignore a nested build directory 2017-02-24 23:09:30 +00:00
CMakeLists.txt [CMake] Provide an option to disable runtimes build 2017-03-23 22:40:10 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +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. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +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.