Teresa Johnson 283d2c83b2 Enable vectorizer-maximize-bandwidth by default. ... Summary: vectorizer-maximize-bandwidth is generally useful in terms of performance. I've tested the impact of changing this to default on speccpu benchmarks on sandybridge machines. The result shows non-negative impact: spec/2006/fp/C++/444.namd 26.84 -0.31% spec/2006/fp/C++/447.dealII 46.19 +0.89% spec/2006/fp/C++/450.soplex 42.92 -0.44% spec/2006/fp/C++/453.povray 38.57 -2.25% spec/2006/fp/C/433.milc 24.54 -0.76% spec/2006/fp/C/470.lbm 41.08 +0.26% spec/2006/fp/C/482.sphinx3 47.58 -0.99% spec/2006/int/C++/471.omnetpp 22.06 +1.87% spec/2006/int/C++/473.astar 22.65 -0.12% spec/2006/int/C++/483.xalancbmk 33.69 +4.97% spec/2006/int/C/400.perlbench 33.43 +1.70% spec/2006/int/C/401.bzip2 23.02 -0.19% spec/2006/int/C/403.gcc 32.57 -0.43% spec/2006/int/C/429.mcf 40.35 +0.27% spec/2006/int/C/445.gobmk 26.96 +0.06% spec/2006/int/C/456.hmmer 24.4 +0.19% spec/2006/int/C/458.sjeng 27.91 -0.08% spec/2006/int/C/462.libquantum 57.47 -0.20% spec/2006/int/C/464.h264ref 46.52 +1.35% geometric mean +0.29% The regression on 453.povray seems real, but is due to secondary effects as all hot functions are bit-identical with and without the flag. I started this patch to consult upstream opinions on this. It will be greatly appreciated if the community can help test the performance impact of this change on other architectures so that we can decided if this should be target-dependent. Reviewers: hfinkel, mkuper, davidxl, chandlerc Reviewed By: chandlerc Subscribers: rengolin, sanjoy, javed.absar, bjope, dorit, magabari, RKSimon, llvm-commits, mzolotukhin Differential Revision: https://reviews.llvm.org/D33341 llvm-svn: 306933		2017-07-01 03:24:06 +00:00
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Analysis	[Dominators] Reapply r306892, r306893, r306893.	2017-07-01 00:23:01 +00:00
AsmParser
BinaryFormat	[BinaryFormat] Identify AArch64 COFF files	2017-06-29 06:30:56 +00:00
Bitcode	Add missing library dependency.	2017-06-28 00:05:27 +00:00
CodeGen	[RegisterCoalescer] Account for instructions deleted by removePartialredunduncy and in WorkList	2017-06-30 23:49:07 +00:00
DebugInfo	[CodeView, PDB] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).	2017-06-30 23:06:03 +00:00
Demangle
ExecutionEngine	Attempt to fix Orc JIT test timeouts	2017-06-29 20:15:08 +00:00
Fuzzer	[libFuzzer] change the default max_len from 64 to 4096. This will affect cases where libFuzzer is run w/o initial corpus or with a corpus of very small items.	2017-06-15 22:43:40 +00:00
IR	[ORE] Add diagnostics hotness threshold	2017-06-30 23:14:53 +00:00
IRReader
LineEditor
Linker
LTO	[ORE] Unify spelling as "diagnostics hotness"	2017-06-30 18:13:59 +00:00
MC	Rename and adjust processFixupValue.	2017-06-30 22:47:27 +00:00
Object	Fix bug in symbol generation for resource COFF	2017-06-30 18:16:35 +00:00
ObjectYAML	[ObjectYAML] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).	2017-07-01 01:35:55 +00:00
Option	[GSoC] Flag value completion for clang	2017-06-20 16:31:31 +00:00
Passes	Hook the sample PGO machinery in the new PM	2017-06-29 23:33:05 +00:00
ProfileData	[Coverage] Remove two overloads of CoverageMapping::load. NFC.	2017-06-30 00:45:26 +00:00
Support	Fix ODR violations due to abuse of LLVM_YAML_IS_(FLOW_)?SEQUENCE_VECTOR	2017-06-30 20:56:57 +00:00
TableGen	[BinaryFormat, Option, TableGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).	2017-06-16 00:43:26 +00:00
Target	Rewrite ARM execute only support to avoid the use of a command line flag and unqualified ARMSubtarget lookup.	2017-07-01 02:55:22 +00:00
Testing	Mark LLVMTestingSupport as not installed in LLVMBuild.	2017-06-19 22:01:50 +00:00
ToolDrivers	[GSoC] Flag value completion for clang	2017-06-20 16:31:31 +00:00
Transforms	Enable vectorizer-maximize-bandwidth by default.	2017-07-01 03:24:06 +00:00
XRay
CMakeLists.txt	[gtest] Create a shared include directory for gtest utilities.	2017-06-14 16:41:50 +00:00
LLVMBuild.txt	[gtest] Create a shared include directory for gtest utilities.	2017-06-14 16:41:50 +00:00