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Craig Topper b97885cc2e [X86] Change vXi1 extract_vector_elt lowering to be legal if the index is 0. Add DAG combine to turn scalar_to_vector+extract_vector_elt into extract_subvector. 
We were lowering the last step extract_vector_elt to a bitcast+truncate. Change it to use an extract_vector_elt of index 0 instead. Add isel patterns to do the equivalent of what the bitcast would have done. Plus an isel pattern for an any_extend+extract to prevent some regressions.

Finally add a DAG combine to turn v1i1 scalar_to_vector+extract_vector_elt of 0 into an extract_subvector.

This fixes some of the regressions from D350800.

llvm-svn: 350918
 		2019-01-11 05:44:56 +00:00
clang [Sema] If CheckPlaceholderExpr rewrites the initializer of an auto 2019-01-11 04:57:34 +00:00
clang-tools-extra Adapt to CXXMethodDecl::getThisType change (NFC) 2019-01-11 02:12:31 +00:00
compiler-rt [TSan] Remove ignore_interceptors_accesses flag 2019-01-10 20:04:33 +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 cmake: Install libraries to DATADIR from GNUInstallDirs 2019-01-07 20:20:37 +00:00
libcxx [libcxx] Reorganize tests since the application of P0602R4 2019-01-10 20:06:11 +00:00
libcxxabi [libcxx] Remove bad_array_length 2018-11-29 19:44:57 +00:00
libunwind Revert "[Sparc] Add Sparc V8 support" 2019-01-10 01:08:31 +00:00
lld Remove an external test file. NFC. 2019-01-10 17:57:30 +00:00
lldb Change SymbolFile::ParseTypes to ParseTypesForCompileUnit. 2019-01-10 20:57:50 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [X86] Change vXi1 extract_vector_elt lowering to be legal if the index is 0. Add DAG combine to turn scalar_to_vector+extract_vector_elt into extract_subvector. 2019-01-11 05:44:56 +00:00
openmp [OpenMP][libomptarget] Use shared memory variable for tracking parallel level 2019-01-09 18:30:14 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly [CMake] Fix generation of exported targets in build directory 2018-11-06 15:18:17 +00:00
pstl [pstl] Fix compile errors when PARALLEL_POLICIES is disabled 2019-01-10 11:23:33 +00:00
README.md Update the project name in README.md 2018-10-19 00:03:01 +00:00

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.