llvm-project/clang
Adam Nemet 32093a1c28 Use FPContractModeKind universally
FPContractModeKind is the codegen option flag which is already ternary (off,
on, fast).  This makes it universally the type for the contractable info
across the front-end:

* In FPOptions (i.e. in the Sema + in the expression nodes).
* In LangOpts::DefaultFPContractMode which is the option that initializes
FPOptions in the Sema.

Another way to look at this change is that before fp-contractable on/off were
the only states handled to the front-end:
 * For "on", FMA folding was performed by  the front-end
 * For "fast", we simply forwarded the flag to TargetOptions to handle it in
 LLVM

Now off/on/fast are all exposed because for fast we will generate
fast-math-flags during CodeGen.

This is toward moving fp-contraction=fast from an LLVM TargetOption to a
FastMathFlag in order to fix PR25721.

Differential Revision: https://reviews.llvm.org/D31167

llvm-svn: 299027
2017-03-29 20:39:49 +00:00
..
INPUTS
bindings [libclang] [OpenCL] Expose half type. 2017-02-10 15:51:11 +00:00
cmake [CMake] fix CLANG_INCLUDE_DIRS CMake export 2017-03-21 19:17:53 +00:00
docs [ASTMatchers] add typeAliasTemplateDecl matcher. 2017-03-28 12:56:47 +00:00
examples Add LLVMOption to clang-interpreter, corresponding to r291938. 2017-01-14 08:54:05 +00:00
include Use FPContractModeKind universally 2017-03-29 20:39:49 +00:00
lib Use FPContractModeKind universally 2017-03-29 20:39:49 +00:00
runtime [sanitizer] Passthrough CMAKE_OSX_DEPLOYMENT_TARGET and CMAKE_OSX_SYSROOT when building compiler-rt from clang/runtime/CMakeLists.txt 2016-12-15 23:20:54 +00:00
test [Objective-C] Miscellaneous -fobjc-weak Fixes 2017-03-29 18:16:38 +00:00
tools [libclang] Bury dead TemporaryFiles 2017-03-24 09:49:54 +00:00
unittests Revert "Added `applyAtomicChanges` function." 2017-03-29 00:24:36 +00:00
utils Correct class-template deprecation behavior-REDUX 2017-03-23 18:51:54 +00:00
www Implement DR 373 "Lookup on namespace qualified name in using-directive" 2017-03-17 21:41:20 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Define LLVM_ENABLE_WARNINGS when building standalone clang to ensure warnings get enabled 2017-03-07 00:15:18 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
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/