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Ahmed Bougacha d74b69039b [CodeGen] Don't require AA in SDAGISel at -O0. 
Before r247167, the pass manager builder controlled which AA
implementations were used, exporting them all in the AliasAnalysis
analysis group.

Now, AAResultsWrapperPass always uses BasicAA, but still uses other AA
implementations if made available in the pass pipeline.

But regardless, SDAGISel is required at O0, and really doesn't need to
be doing fancy optimizations based on useful AA results.

Don't require AA at CodeGenOpt::None, and only use it otherwise.

This does have a functional impact (and one testcase is pessimized
because we can't reuse a load).  But I think that's desirable no matter
what.

Note that this alone doesn't result in less DT computations: TwoAddress
was previously able to reuse the DT we computed for SDAG.  That will be
fixed separately.

Differential Revision: https://reviews.llvm.org/D32766

llvm-svn: 302611
2017-05-10 00:39:30 +00:00
bindings [go bindings] Rmove duplicated conversion function definitions after r300843. 2017-04-20 19:06:11 +00:00
cmake Revert "Revert "CMake: Move sphinx detection into AddSphinxTarget.cmake"" 2017-05-09 01:41:28 +00:00
docs Introduce experimental generic intrinsics for horizontal vector reductions. 2017-05-09 10:43:25 +00:00
examples [Kaleidoscope] toy.cpp use after move fix 2017-05-07 11:00:01 +00:00
include [CodeGen] Don't require AA in SDAGISel at -O0. 2017-05-10 00:39:30 +00:00
lib [CodeGen] Don't require AA in SDAGISel at -O0. 2017-05-10 00:39:30 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +00:00
resources
runtimes [CMake][runtimes] Use -nodefaultlibs for the runtimes build 2017-04-13 21:29:03 +00:00
test [CodeGen] Don't require AA in SDAGISel at -O0. 2017-05-10 00:39:30 +00:00
tools [CodeGen] Split SafeStack into a LegacyPass and a utility. NFC. 2017-05-10 00:39:22 +00:00
unittests [ExecutionEngine] Make RuntimeDyld::MemoryManager responsible for tracking EH 2017-05-09 21:32:18 +00:00
utils Adding VSCode syntax colorizer to utils (generated from textmate colorizer). 2017-05-09 17:13:37 +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: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt CMake: Add LLVM_DYLIB_SYMBOL_VERSIONING option 2017-05-03 14:43:44 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure
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
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.