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Mirror of https://github.com/RPCS3/llvm-mirror
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Justin Lebar aff7184247 [SCEV] Simplify zext/trunc idiom that appears when handling bitmasks. 
Summary:
Specifically, we transform

  zext(2^K * (trunc X to iN)) to iM ->
  2^K * (zext(trunc X to i{N-K}) to iM)<nuw>

This is helpful because pulling the 2^K out of the zext allows further
optimizations.

Reviewers: sanjoy

Subscribers: hiraditya, llvm-commits, timshen

Differential Revision: https://reviews.llvm.org/D48158

llvm-svn: 334737
2018-06-14 17:13:48 +00:00
bindings [LLVM-C] [OCaml] Remove LLVMAddBBVectorizePass 2018-05-28 16:58:10 +00:00
cmake [CMake] Pass additional CMake tools to external projects 2018-06-06 21:43:37 +00:00
docs [AMDGPU] Document the AMDGPU LLVM attributes 2018-06-14 16:40:10 +00:00
examples [ORC] Update JITCompileCallbackManager to support multi-threaded code. 2018-05-30 01:57:45 +00:00
include Revert "[MC] Factor MCObjectStreamer::addFragmentAtoms out of MachO streamer." 2018-06-14 17:11:19 +00:00
lib [SCEV] Simplify zext/trunc idiom that appears when handling bitmasks. 2018-06-14 17:13:48 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources
runtimes [CMake] Pass additional CMake tools to external projects 2018-06-06 21:43:37 +00:00
test [SCEV] Simplify zext/trunc idiom that appears when handling bitmasks. 2018-06-14 17:13:48 +00:00
tools [llvm-exegesis] Use BenchmarkResult::Instructions instead of OpcodeName 2018-06-14 06:57:52 +00:00
unittests [ORC] Filter out self-dependencies in VSO::addDependencies. 2018-06-14 15:32:59 +00:00
utils [TableGen] Move some shared_ptrs to avoid unnecessary copies (NFC). 2018-06-14 11:56:19 +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 gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt [CMake] Handle 'libtool' being at a path with spaces in it. 2018-06-13 18:21:47 +00:00
CODE_OWNERS.TXT [CODE_OWNERS] Update my email address. 2018-04-23 19:09:49 +00:00
configure
CREDITS.TXT Update my information in the CREDITS file. 2018-05-23 14:44:42 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit: remove a blank line 2018-06-08 21:21:55 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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