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Craig Topper 88f4054f48 [X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. 
Summary:
These are all implemented by icc as well.

I made bit_scan_forward/reverse forward to the __bsfd/__bsrq since we also have
__bsfq/__bsrq.

Note, when lzcnt is enabled the bsr intrinsics generates lzcnt+xor instead of bsr.

Reviewers: RKSimon, spatel

Subscribers: cfe-commits, llvm-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59682

llvm-svn: 356848
 		2019-03-24 00:56:52 +00:00
..
INPUTS
…
bindings [libclang] Expose aligned() attribute. 2019-03-13 16:16:54 +00:00
cmake [CMake] Tell libc++ that we're using compiler-rt on Apple platforms 2019-03-12 15:32:00 +00:00
docs Clang-format: add finer-grained options for putting all arguments on one line 2019-03-23 14:37:58 +00:00
examples [build] Rename clang-headers to clang-resource-headers 2019-03-04 21:19:53 +00:00
include Sync some doc changes ClangFormatStyleOptions.rst with doc comments in `Format.h` 2019-03-23 17:57:31 +00:00
lib [X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. 2019-03-24 00:56:52 +00:00
runtime [CMake] External compiler-rt-configure requires LLVMTestingSupport when including tests 2019-02-01 15:35:25 +00:00
test [X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. 2019-03-24 00:56:52 +00:00
tools libclang/CIndexer.cpp: Use loadquery() on AIX for path to library 2019-03-23 18:10:45 +00:00
unittests [clang-format] Keep protobuf "package" statement on one line 2019-03-23 14:43:41 +00:00
utils creduce-clang-crash.py: preprocess file + reduce commandline 2019-03-21 01:01:53 +00:00
www [Analyzer] Checker for non-determinism caused by sorting of pointer-like elements 2019-03-08 20:13:53 +00:00
.arcconfig
…
.clang-format
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.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Adjust documentation for git migration. 2019-01-29 16:37:27 +00:00
CMakeLists.txt Add --unwindlib=[libgcc|compiler-rt] to parallel --rtlib= [take 2] 2019-03-19 20:01:59 +00:00
CODE_OWNERS.TXT Add myself as code owner for OpenBSD driver 2018-11-30 21:42:34 +00:00
INSTALL.txt
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LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
ModuleInfo.txt
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NOTES.txt PTH-- Remove feature entirely- 2018-12-04 14:34:09 +00:00
README.txt
…

README.txt 

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
(C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM
compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things
beyond just compiling code: we intend for Clang to be host to a number of
different source-level tools.  One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read
the relevant web sites.  Here are some pointers:

Information on Clang:             http://clang.llvm.org/
Building and using Clang:         http://clang.llvm.org/get_started.html
Clang Static Analyzer:            http://clang-analyzer.llvm.org/
Information on the LLVM project:  http://llvm.org/

If you have questions or comments about Clang, a great place to discuss them is
on the Clang development mailing list:
  http://lists.llvm.org/mailman/listinfo/cfe-dev

If you find a bug in Clang, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/