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Yonghong Song 3466e00716 Reland "[Attr] support btf_type_tag attribute" 
This is to revert commit f95bd18b5f (Revert "[Attr] support
btf_type_tag attribute") plus a bug fix.

Previous change failed to handle cases like below:
    $ cat reduced.c
    void a(*);
    void a() {}
    $ clang -c reduced.c -O2 -g

In such cases, during clang IR generation, for function a(),
CGCodeGen has numParams = 1 for FunctionType. But for
FunctionTypeLoc we have FuncTypeLoc.NumParams = 0. By using
FunctionType.numParams as the bound to access FuncTypeLoc
params, a random crash is triggered. The bug fix is to
check against FuncTypeLoc.NumParams before accessing
FuncTypeLoc.getParam(Idx).

Differential Revision: https://reviews.llvm.org/D111199
 		2021-11-05 11:25:17 -07:00
..
INPUTS
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bindings Recommit: Compress formatting of array type names (int [4] -> int[4]) 2021-10-21 11:34:43 -07:00
cmake [CMake] Update Cmake cache file for Win to ARM Linux cross builds. NFC 2021-10-29 18:55:49 -07:00
docs [clang] [Objective C] Inclusive language: use objcmt-allowlist-dir-path=<arg> instead of objcmt-white-list-dir-path=<arg> 2021-11-05 12:27:05 -04:00
examples [clang-repl] Remove redundant link libraries and drop unused file. 2021-10-27 10:13:30 +00:00
include [AIX][Clang] Fix XL product name in AIX XL compatibility warning 2021-11-05 13:17:30 -04:00
lib Reland "[Attr] support btf_type_tag attribute" 2021-11-05 11:25:17 -07:00
runtime Prepare Compiler-RT for GnuInstallDirs, matching libcxx, document all 2021-07-13 15:21:41 +00:00
test Reland "[Attr] support btf_type_tag attribute" 2021-11-05 11:25:17 -07:00
tools [OpenMP] Add parsing/sema/serialization for 'bind' clause. 2021-11-04 14:40:30 -07:00
unittests [Coroutines] [Frontend] Lookup in std namespace first 2021-11-04 11:53:47 +08:00
utils [RISCV] Remove always_inline and nodebug attributes from RISCV vector intrinsic header. 2021-10-25 09:29:37 -07:00
www [NFC] Inclusive language: Remove instances of master in URLs 2021-11-05 08:48:41 -05:00
.clang-format
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.clang-tidy
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.gitignore
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CMakeLists.txt [CMake] Fix typo in error message for LLD in bootstrap builds. 2021-10-06 22:38:12 +05:30
CODE_OWNERS.TXT Add myself as a code owner for SYCL support 2021-09-20 09:32:25 +03:00
INSTALL.txt
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LICENSE.TXT
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ModuleInfo.txt
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NOTES.txt
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README.txt
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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/