llvm-project/clang
Fangrui Song 2786e673c7 [IR][sanitizer] Add module flag "frame-pointer" and set it for cc1 -mframe-pointer={non-leaf,all}
The Linux kernel objtool diagnostic `call without frame pointer save/setup`
arise in multiple instrumentation passes (asan/tsan/gcov). With the mechanism
introduced in D100251, it's trivial to respect the command line
-m[no-]omit-leaf-frame-pointer/-f[no-]omit-frame-pointer, so let's do it.

Fix: https://github.com/ClangBuiltLinux/linux/issues/1236 (tsan)
Fix: https://github.com/ClangBuiltLinux/linux/issues/1238 (asan)

Also document the function attribute "frame-pointer" which is long overdue.

Differential Revision: https://reviews.llvm.org/D101016
2021-04-22 18:07:30 -07:00
..
INPUTS
bindings
cmake Ship `llvm-cxxfilt` in the toolchain. 2021-04-13 11:58:33 -07:00
docs Coverage: Document how to collect a profile without a filesystem 2021-04-22 11:29:39 -07:00
examples
include Reapply "[AMDGPU][OpenMP] Add amdgpu-arch tool to list AMD GPUs installed" 2021-04-23 01:07:16 +01:00
lib [IR][sanitizer] Add module flag "frame-pointer" and set it for cc1 -mframe-pointer={non-leaf,all} 2021-04-22 18:07:30 -07:00
runtime [compiler-rt] Fix stale incremental builds when using `LLVM_BUILD_EXTERNAL_COMPILER_RT=ON`. 2021-03-10 09:42:24 -08:00
test [IR][sanitizer] Add module flag "frame-pointer" and set it for cc1 -mframe-pointer={non-leaf,all} 2021-04-22 18:07:30 -07:00
tools Reapply "[AMDGPU][OpenMP] Add amdgpu-arch tool to list AMD GPUs installed" 2021-04-23 01:07:16 +01:00
unittests [AST] Add NestedNameSpecifierLoc accessors to node introspection 2021-04-22 11:27:19 +01:00
utils [OpenCL] Do not add builtins with unavailable types 2021-04-21 11:59:29 +01:00
www Fix clang Visual Studio build instructions 2021-04-20 11:17:29 -07:00
.clang-format
.clang-tidy
.gitignore Remove .gitignore entries not relevant in the monorepo. 2021-04-07 12:25:02 -07:00
CMakeLists.txt [clang][cli] Round-trip cc1 arguments in assert builds 2021-03-27 17:24:03 +01:00
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/