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Cong Hou ea8edf0fdf [LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring specific instructions.
(This is the second attempt to check in this patch: REQUIRES: asserts is added
to reg-usage.ll now.)

LoopVectorizationCostModel::calculateRegisterUsage() is used to estimate the
register usage for specific VFs. However, it takes into account many
instructions that won't be vectorized, such as induction variables,
GetElementPtr instruction, etc.. This makes the loop vectorizer too conservative
when choosing VF. In this patch, the induction variables that won't be
vectorized plus GetElementPtr instruction will be added to ValuesToIgnore set
so that their register usage won't be considered any more.


Differential revision: http://reviews.llvm.org/D15177

llvm-svn: 255460
2015-12-13 16:55:46 +00:00
autoconf [OPENMP] Make -fopenmp to turn on OpenMP support by default. 2015-12-10 05:45:58 +00:00
bindings Fix llvm-config to adapt to the install environment. 2015-11-09 23:15:38 +00:00
cmake [CMake] Add LLVM_BUILD_INSTRUMENTED option to enable building with -fprofile-instr-generate 2015-12-10 21:19:07 +00:00
docs Try to appease sphinx 2015-12-12 06:56:02 +00:00
examples [Orc] Fix Kaleidoscope example for change in r254693. 2015-12-04 02:32:32 +00:00
include Normalize MBB's successors' probabilities in several locations. 2015-12-13 09:26:17 +00:00
lib [LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring specific instructions. 2015-12-13 16:55:46 +00:00
projects [CMake] Disable adding the test suite as a projects subdirectory 2015-10-28 18:36:56 +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 [LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring specific instructions. 2015-12-13 16:55:46 +00:00
tools [llvm-objdump/MachoDump] Simplify. 2015-12-12 21:50:11 +00:00
unittests Revert r255444. 2015-12-13 04:14:39 +00:00
utils [TableGen] Correct Namespace lookup with AltNames in AsmWriterEmitter 2015-12-11 17:31:27 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.clang-tidy adding readability-identifier-naming to llvm clang-tidy configuration. 2015-12-08 17:44:51 +00:00
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt [CMake] Add option LLVM_EXTERNALIZE_DEBUGINFO 2015-12-03 18:45:39 +00:00
CODE_OWNERS.TXT Friendly takeover of the Hexagon backend 2015-12-03 17:07:12 +00:00
configure [OPENMP] Make -fopenmp to turn on OpenMP support by default. 2015-12-10 05:45:58 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +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
Makefile
Makefile.common
Makefile.config.in We're actually -Wmissing-field-initializers clean thanks to the cmake 2015-08-07 16:44:47 +00:00
Makefile.rules Create Makefile variables for 'share' and 'libexec' 2015-11-09 16:10:00 +00:00
README.txt Revert previous test commit. 2015-12-11 07:40:25 +00:00

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