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Sanjay Patel b276dd195a [InstCombine] canonicalize select shuffles by commuting 
In PR41304:
https://bugs.llvm.org/show_bug.cgi?id=41304
...we have a case where we want to fold a binop of select-shuffle (blended) values.

Rather than try to match commuted variants of the pattern, we can canonicalize the
shuffles and check for mask equality with commuted operands.

We don't produce arbitrary shuffle masks in instcombine, but select-shuffles are a
special case that the backend is required to handle because we already canonicalize
vector select to this shuffle form.

So there should be no codegen difference from this change. It's possible that this
improves CSE in IR though.

Differential Revision: https://reviews.llvm.org/D60016

llvm-svn: 357366
 		2019-03-31 15:01:30 +00:00
clang [InstCombine] canonicalize select shuffles by commuting 2019-03-31 15:01:30 +00:00
clang-tools-extra Rename IncludeFixerTests to ClangIncludeFixerTests and ChangeNamespaceTests to ClangChangeNamespaceTests 2019-03-30 23:09:10 +00:00
compiler-rt [cmake] Change deprecated $<CONFIG> to $<CONFIGURATION>. NFC 2019-03-30 14:38:51 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx Mark fenv.h as a system header before the #include_next directive 2019-03-29 16:03:57 +00:00
libcxxabi [libc++abi] Don't set POSITION_INDEPENDENT_CODE when building static library 2019-03-29 22:08:56 +00:00
libunwind Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
lld Re-land "[WebAssembly] Improve invalid relocation error message"" 2019-03-29 22:56:39 +00:00
lldb [CMake] Add missing test dep 2019-03-30 00:00:19 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [InstCombine] canonicalize select shuffles by commuting 2019-03-31 15:01:30 +00:00
openmp [libomptarget] Introduce LIBOMPTARGET_ENABLE_DEBUG cmake option. 2019-03-26 15:19:15 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly Apply include-what-you-use #include removal suggestions. NFC. 2019-03-28 20:19:49 +00:00
pstl [pstl] Qualify calls to internal functions 2019-03-29 20:11:24 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.