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Simon Pilgrim ff53a4a234 [SelectionDAG] Enable SimplifyDemandedVectorElts support for simplifying shuffle masks 
Based off the DemandedElts mask the and UNDEF elements returned from the SimplifyDemandedVectorElts calls to the shuffle operands, we can attempt to simplify the shuffle mask.

I had to be very conservative here as accepting post-legalized shuffle masks could cause problems for targets that legalize UNDEF mask elements back to inrange values (PowerPC), similarly combining to identity shuffle masks could cause too much UNDEF information to disappear for later combines.

llvm-svn: 325354
 		2018-02-16 16:22:14 +00:00
clang Use Token::isOneOf method in Parser. 2018-02-16 16:07:33 +00:00
clang-tools-extra [clangd] remove redundant ';' introduced in r325343 2018-02-16 14:47:08 +00:00
compiler-rt Add initial XRay support for NetBSD 2018-02-16 14:45:20 +00:00
debuginfo-tests [debuginfo-tests] Support moving debuginfo-tests to llvm/projects 2017-12-12 16:54:20 +00:00
libclc amdgpu/half_recip: Switch implementation to native_recip 2018-02-13 22:09:46 +00:00
libcxx Fix test failure on compilers w/o deduction guides 2018-02-15 02:41:19 +00:00
libcxxabi [demangler] Support for exception specifications on function types. 2018-02-14 01:08:20 +00:00
libunwind [cmake] [libunwind] LLVM_FOUND isn't always set, so just test if 2018-01-27 19:31:44 +00:00
lld [ELF] Extend symbol-order-warnings test case for ICF 2018-02-16 10:49:57 +00:00
lldb Shorten socket names in TestPlatformProcessConnect 2018-02-16 12:57:35 +00:00
llgo irgen: Create functions instead of global variables for builtin hash and equal algorithms. 2017-06-04 22:11:28 +00:00
llvm [SelectionDAG] Enable SimplifyDemandedVectorElts support for simplifying shuffle masks 2018-02-16 16:22:14 +00:00
openmp [CMake] Add -fno-experimental-isel for testing 2018-02-15 08:10:22 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [ScopBuilder] scalar-indep: Fix mutually referencing PHIs. 2018-02-12 21:09:40 +00:00
README.md Add an svn project to contain the files that appear at the root of the 2017-10-19 21:09:49 +00:00

README.md

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.