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Jingyue Wu a5bed5dde5 [NVPTX] run LSR before straight-line optimizations 
Summary:
Straight-line optimizations can simplify the loop body and make LSR's
cost analysis more precise. This significantly improves several Eigen3
CUDA benchmarks.

With this change, EigenContractionKernel runs up to 40% faster
(753ceee5f2/unsupported/Eigen/CXX11/src/Tensor/TensorContractionCuda.h (cl-502)).
EigenConvolutionKernel2D runs up to 10% faster
(753ceee5f2/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h (cl-605)).

I have some difficulties writing small tests that benefit from this
reordering due to a seemingly issue with LSR (being discussed at
http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-July/088244.html).

See the review thread for the compilation time impact of GVN. 

Reviewers: eliben, jholewinski

Subscribers: llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D11304

llvm-svn: 242982
2015-07-23 04:59:07 +00:00
autoconf Update the trunk version to 3.8.0svn. 2015-07-14 22:35:57 +00:00
bindings Revert "Update LLVM bindings after r239940. ..." 2015-07-16 01:16:39 +00:00
cmake [CMake] Projects supported via LLVM_EXTERNAL_*_SOURCE_DIR need to be explicitly specified. 2015-07-21 15:53:09 +00:00
docs Remove oversight group. Replace with LLVM Foundation Board of Directors. 2015-07-21 20:14:20 +00:00
examples Fix Kaleidoscope tuto: ExecutionEngine->getDataLayout() returns a ref 2015-07-16 16:47:18 +00:00
include Refactor duplicated code and check for invalid symbol table size. 2015-07-23 03:24:22 +00:00
lib [NVPTX] run LSR before straight-line optimizations 2015-07-23 04:59:07 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test Refactor duplicated code and check for invalid symbol table size. 2015-07-23 03:24:22 +00:00
tools [dsymutil] Check archive members timestamps. 2015-07-22 23:24:00 +00:00
unittests [PM/AA] Extract the ModRef enums from the AliasAnalysis class in 2015-07-22 23:15:57 +00:00
utils [PM/AA] Extract the ModRef enums from the AliasAnalysis class in 2015-07-22 23:15:57 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt Update the trunk version to 3.8.0svn. 2015-07-14 22:35:57 +00:00
CODE_OWNERS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
configure Update the trunk version to 3.8.0svn. 2015-07-14 22:35:57 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Disallow in-source builds (as we already do for the cmake build). 2015-07-01 18:09:21 +00:00
Makefile.rules
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +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're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.