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Rong Xu 9c6f1538cc [PGO] Change profile use cc1 option to handle IR level profiles 
This patch changes cc1 option for PGO profile use from
-fprofile-instr-use=<path> to -fprofile-instrument-use-path=<path>.
-fprofile-instr-use=<path> is now a driver only option.

In addition to decouple the cc1 option from the driver level option, this patch
also enables IR level profile use. cc1 option handling now reads the profile
header and sets CodeGenOpt ProfileUse (valid values are {None, Clang, LLVM}
-- this is a common enum for -fprofile-instrument={}, for the profile
instrumentation), and invoke the pipeline to enable the respective PGO use pass.

Reviewers: silvas, davidxl

Differential Revision: http://reviews.llvm.org/D17737

llvm-svn: 262515
 		2016-03-02 20:59:36 +00:00
..
INPUTS
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bindings libclang: expose dllexport, dllimport attributes 2015-12-10 18:45:18 +00:00
cmake [CMake] Only configure Native target in stage 1, configure all in other stages 2016-02-26 21:23:59 +00:00
docs Workaround doxygen bug https://bugzilla.gnome.org/show_bug.cgi?id=506243 2016-02-27 14:02:08 +00:00
examples Revert r260265, "clang-cl: Support loading plugins on Windows" 2016-02-11 16:33:20 +00:00
include [PGO] Change profile use cc1 option to handle IR level profiles 2016-03-02 20:59:36 +00:00
lib [PGO] Change profile use cc1 option to handle IR level profiles 2016-03-02 20:59:36 +00:00
runtime [cmake] Add a few more compiler-rt check-* targets for EXTERNAL_COMPILER_RT 2016-03-01 15:33:52 +00:00
test [PGO] Change profile use cc1 option to handle IR level profiles 2016-03-02 20:59:36 +00:00
tools Serialize `#pragma detect_mismatch`. 2016-03-02 19:28:54 +00:00
unittests [clang-format] Detect constructor initializers preceded by `noexcept`. 2016-03-01 21:41:58 +00:00
utils Add an llvm_unreachable back to the autogeneration of this covered switch. 2016-03-01 02:09:20 +00:00
www Implement the likely resolution of core issue 253. 2016-02-19 01:52:46 +00:00
.arcconfig
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.clang-format
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.clang-tidy
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.gitignore Add the clang debug info test directory to .gitignore as it's managed separately. 2016-01-29 01:35:55 +00:00
CMakeLists.txt [CMake] Add BINUTILS_INCDIR to the default passthrough list for multi-stage builds 2016-02-26 21:04:41 +00:00
CODE_OWNERS.TXT Added Anastasia Stulova as a code owner for OpenCL 2016-02-03 18:51:19 +00:00
INSTALL.txt Honor system specific paths of MAN pages 2015-11-20 18:49:02 +00:00
LICENSE.TXT
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ModuleInfo.txt
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NOTES.txt
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README.txt Update mailing list references to lists.llvm.org 2015-08-05 03:55:23 +00:00

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/