Add sanitizer blacklists to the rules generated with -M/-MM/-MD/-MMD.

Summary:
Clang sanitizers, such as AddressSanitizer, ThreadSanitizer, MemorySanitizer,
Control Flow Integrity and others, use blacklists to specify which types / functions
should not be instrumented to avoid false positives or suppress known failures.

This change adds the blacklist filenames to the list of dependencies of the rules,
generated with -M/-MM/-MD/-MMD. This lets CMake/Ninja recognize that certain
C/C++/ObjC files need to be recompiled (if a blacklist is updated).

Reviewers: pcc

Subscribers: rsmith, honggyu.kim, pcc, cfe-commits

Differential Revision: http://reviews.llvm.org/D11968

llvm-svn: 244867

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 8934c80..ae1ccd7 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -705,6 +705,10 @@ static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
       Args.getLastArgValue(OPT_module_dependency_dir);
   if (Args.hasArg(OPT_MV))
     Opts.OutputFormat = DependencyOutputFormat::NMake;
+  // Add sanitizer blacklists as extra dependencies.
+  // They won't be discovered by the regular preprocessor, so
+  // we let make / ninja to know about this implicit dependency.
+  Opts.ExtraDeps = Args.getAllArgValues(OPT_fsanitize_blacklist);
 }
 
 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,