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Craig Topper 1ada137854 [X86] Add back the -x86-experimental-vector-widening-legalization comand line flag and all associated code, but leave it enabled by default 
Google is reporting performance issues with the new default behavior
and have asked for a way to switch back to the old behavior while we
investigate and make fixes.

I've restored all of the code that had since been removed and added
additional checks of the command flag onto code paths that are
not otherwise guarded by a check of getTypeAction.

I've also modified the cost model tables to hopefully get us back
to the previous costs.

Hopefully we won't need to support this for very long since we
have no test coverage of the old behavior so we can very easily
break it.

llvm-svn: 369332
 		2019-08-20 06:58:00 +00:00
clang [CallGraph] Take into accound calls that aren't within any function bodies. 2019-08-20 02:22:37 +00:00
clang-tools-extra Fix typo. "piont" => "point" 2019-08-20 00:28:21 +00:00
compiler-rt [TSan] Rename file with libdispatch interceptors 2019-08-20 00:04:19 +00:00
debuginfo-tests Make nrvo-string test more robust. 2019-06-27 20:38:37 +00:00
libclc Revert "Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC" 2019-08-05 17:23:23 +00:00
libcxx Provide a meaningful diagnostic when LLVM_PATH doesn't point to a directory 2019-08-19 23:51:26 +00:00
libcxxabi Provide a meaningful diagnostic when LLVM_PATH doesn't point to a directory 2019-08-19 23:51:26 +00:00
libunwind [runtimes] Don't depend on libpthread on Android 2019-07-22 20:41:03 +00:00
lld [lld][WebAssembly] Honor --no-export-dynamic even with -shared 2019-08-19 16:34:51 +00:00
lldb [lldb] Fix typo on the BreakpointLocation header and the lldbtest.py (NFC) 2019-08-19 23:59:31 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [X86] Add back the -x86-experimental-vector-widening-legalization comand line flag and all associated code, but leave it enabled by default 2019-08-20 06:58:00 +00:00
openmp [OpenMP] Enable warning about "implicit fallthrough" 2019-08-15 13:26:55 +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 [Polly] Migrate llvm::make_unique to std::make_unique 2019-08-14 22:28:12 +00:00
pstl [pstl] Allow customizing whether per-TU insulation is provided 2019-08-13 12:49:00 +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
.gitignore Change /build to /build* in top-level .gitignore. 2019-08-02 02:14:08 +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.