llvm-project/clang
Craig Topper a10cec02f7 [X86] Improve X86 cmpps/cmppd/cmpss/cmpsd intrinsics with strictfp
The constrained fcmp intrinsics don't allow the TRUE/FALSE predicates.
Using them will assert. To workaround this I'm emitting the old X86 specific intrinsics that were never removed from the backend when we switched to using fcmp in IR. We have no way to mark them as being strict, but that's true of all target specific intrinsics so doesn't seem like we need to solve that here.

I've also added support for selecting between signaling and quiet.

Still need to support SAE which will require using a target specific
intrinsic. Also need to fix masking to not use an AND instruction
after the compare.

Differential Revision: https://reviews.llvm.org/D72906
2020-01-29 15:52:11 -08:00
..
INPUTS
bindings [Wdocumentation] Implement \anchor 2019-12-21 14:52:21 +01:00
cmake [CMake][Fuchsia] Disable in-process cc1 2020-01-22 10:11:54 -08:00
docs Add TagDecl AST matcher 2020-01-29 07:58:31 -05:00
examples Update clang-interpreter example to incorporate changes in ce2207abaf. 2020-01-21 22:00:50 -08:00
include [Analyzer] Split container modeling from iterator modeling 2020-01-29 16:10:45 +01:00
lib [X86] Improve X86 cmpps/cmppd/cmpss/cmpsd intrinsics with strictfp 2020-01-29 15:52:11 -08:00
runtime
test [X86] Improve X86 cmpps/cmppd/cmpss/cmpsd intrinsics with strictfp 2020-01-29 15:52:11 -08:00
tools [Clang][Bundler] Add 'exclude' flag to target objects sections 2020-01-29 09:00:45 -08:00
unittests Fix clang test build 2020-01-29 13:03:27 +00:00
utils Fix one round of implicit conversions found by g++5. 2020-01-29 01:52:48 +01:00
www DR1753: Don't permit x.NS::~T() as a pseudo-destructor name. 2020-01-24 18:53:50 -08:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [Clang][Driver] Re-use the calling process instead of creating a new process for the cc1 invocation 2020-01-13 10:40:18 -05:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
README.txt [NFC] test commit reverted 2019-12-21 22:12:07 +04:00

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/