llvm-project/clang
Sam Elliott 28145735f7 [RISCV] Avoid save-restore target feature warning
Summary:
LLVM issues a warning if passed unknown target features. Neither I nor
@asb noticed this until after https://reviews.llvm.org/D63498 landed.

This patch stops passing the (unknown) "save-restore" target feature to
the LLVM backend, but continues to emit a warning if a driver asks for
`-msave-restore`. The default of assuming `-mno-save-restore` (and
emitting no warnings) remains.

Reviewers: asb

Reviewed By: asb

Subscribers: rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, psnobl, benna, Jim, cfe-commits, asb

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64008

llvm-svn: 364777
2019-07-01 14:53:56 +00:00
..
INPUTS
bindings [clang][Tooling] Infer target and mode from argv[0] when using JSONCompilationDatabase 2019-06-26 07:39:03 +00:00
cmake Use LTO capable linker 2019-06-05 17:35:38 +00:00
docs print-supported-cpus quality of life patch. 2019-06-25 23:57:14 +00:00
examples [PragmaHandler] Expose `#pragma` location 2019-05-21 23:51:38 +00:00
include [ASTImporter] Mark erroneous nodes in from ctx 2019-07-01 14:19:53 +00:00
lib [RISCV] Avoid save-restore target feature warning 2019-07-01 14:53:56 +00:00
runtime [GWP-ASan] Mutex implementation [2]. 2019-05-30 19:45:32 +00:00
test [RISCV] Avoid save-restore target feature warning 2019-07-01 14:53:56 +00:00
tools [Driver] Fix style issues of --print-supported-cpus after D63105 2019-06-29 01:24:36 +00:00
unittests [ASTImporter] Mark erroneous nodes in from ctx 2019-07-01 14:19:53 +00:00
utils Various tweaks to MSVC natvis visualizers 2019-06-30 22:04:25 +00:00
www [cxx2a] P1236R1: the validity of a left shift does not depend on the 2019-06-25 01:45:26 +00:00
.arcconfig
.clang-format
.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 Moved everything SMT-related to LLVM and updated the cmake scripts. 2019-03-25 17:47:45 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
ModuleInfo.txt
NOTES.txt
README.txt [NFC] Test commit 2019-06-12 07:50:48 +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/