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Hideki Saito 054ce2fa8a [LV][VPlan] Change to implement VPlan based predication for 
VPlan-native path

Context: Patch Series #2 for outer loop vectorization support in LV
using VPlan. (RFC:
http://lists.llvm.org/pipermail/llvm-dev/2017-December/119523.html).

Patch series #2 checks that inner loops are still trivially lock-step
among all vector elements. Non-loop branches are blindly assumed as
divergent.

Changes here implement VPlan based predication algorithm to compute
predicates for blocks that need predication. Predicates are computed
for the VPLoop region in reverse post order. A block's predicate is
computed as OR of the masks of all incoming edges. The mask for an
incoming edge is computed as AND of predecessor block's predicate and
either predecessor's Condition bit or NOT(Condition bit) depending on
whether the edge from predecessor block to the current block is true
or false edge.

Reviewers: fhahn, rengolin, hsaito, dcaballe

Reviewed By: fhahn

Patch by Satish Guggilla, thanks!

Differential Revision: https://reviews.llvm.org/D53349

llvm-svn: 351990
2019-01-23 22:43:12 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
cmake Fix llvm::is_trivially_copyable portability issues 2019-01-22 13:48:55 +00:00
docs [llvm-symbolizer] Improve compatibility of --functions with GNU addr2line 2019-01-23 17:27:48 +00:00
examples Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
include [MC][X86] Correctly model additional operand latency caused by transfer delays from the integer to the floating point unit. 2019-01-23 16:35:07 +00:00
lib [LV][VPlan] Change to implement VPlan based predication for 2019-01-23 22:43:12 +00:00
projects Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
resources
runtimes Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test hwasan: Read shadow address from ifunc if we don't need a frame record. 2019-01-23 22:39:11 +00:00
tools [llvm-symbolizer] Improve compatibility of --functions with GNU addr2line 2019-01-23 17:27:48 +00:00
unittests [LV][VPlan] Change to implement VPlan based predication for 2019-01-23 22:43:12 +00:00
utils [IR] Match intrinsic parameter by scalar/vectorwidth 2019-01-23 16:00:22 +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 Git ignore CLion project configuration files. NFC 2019-01-02 19:58:07 +00:00
CMakeLists.txt Revert r351324 "Build LLVM-C.dll by default on windows and enable in release package" 2019-01-16 12:36:28 +00:00
CODE_OWNERS.TXT [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
configure
CREDITS.TXT Remove a period from CREDITS.TXT (testing email change). NFC 2019-01-19 09:07:38 +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. 2018-09-22 01:01:03 +00:00
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.