llvm-project/clang
Michael Spencer d816d9bdc5 [clang][ScanDeps] Fix issue with multiple commands with the same input.
Previously, given a CompilationDatabase with two commands for the same
source file we would report that file twice with the union of the
dependencies for each command both times.

This was due to the way `ClangTool` runs actions given an input source
file (see the comment in `DependencyScanningTool.cpp`). This commit adds
a `SingleCommandCompilationDatabase` that is created with each
`CompileCommand` in the original CDB, which is then used for each
`ClangTool` invocation. This gives us a single run of
`DependencyScanningAction` per `CompileCommand`.

I looked at using `AllTUsToolExecutor` which is a parallel tool
executor, but I'm not sure it's suitable for `clang-scan-deps` as it
does a lot more sharing of state than `AllTUsToolExecutor` expects.

Differential Revision: https://reviews.llvm.org/D69643
2019-10-31 14:22:01 -07:00
..
INPUTS
bindings [TestCommit] Trivial change to test commit access. 2019-09-19 09:24:42 +00:00
cmake [CMake] Update Fuchsia build configuration 2019-10-24 16:35:29 -07:00
docs [OPENMP][DOC]Provide correct info about supported features, NFC. 2019-10-30 10:38:11 -04:00
examples Fixup build of clang-interpreter example after change in r370122. 2019-08-28 02:13:24 +00:00
include [clang][ScanDeps] Fix issue with multiple commands with the same input. 2019-10-31 14:22:01 -07:00
lib [clang][ScanDeps] Fix issue with multiple commands with the same input. 2019-10-31 14:22:01 -07:00
runtime [GWP-ASan] Mutex implementation [2]. 2019-05-30 19:45:32 +00:00
test [clang][ScanDeps] Fix issue with multiple commands with the same input. 2019-10-31 14:22:01 -07:00
tools [clang][ScanDeps] Fix issue with multiple commands with the same input. 2019-10-31 14:22:01 -07:00
unittests [clang-format] Fix SpacesInSquareBrackets for Lambdas with Initial "&ref" Parameter 2019-10-31 11:08:05 -04:00
utils [NFC] Add a tablegen node for the root of the AST node hierarchies. 2019-10-25 16:39:21 -07:00
www [www] Change URLs to HTTPS. 2019-10-24 13:25:15 -07:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [clang] [cmake] Support LLVM_DISTRIBUTION_COMPONENTS in stand-alone build 2019-10-07 18:14:56 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
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/