Add support for profiling the matchers used.

Summary:
Add support for profiling the matchers used.
This will be connected with clang-tidy to generate a report to determine
and debug slow checks.

Reviewers: alexfh

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D5911

llvm-svn: 220418

1 files changed, 19 insertions, 0 deletions

diff --git a/clang/unittests/ASTMatchers/ASTMatchersTest.cpp b/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
index d458431ecbb..b2c2a386e85 100644
--- a/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/clang/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -4421,6 +4421,25 @@ TEST(IsEqualTo, MatchesNodesByIdentity) {
       new VerifyAncestorHasChildIsEqual<IfStmt>()));
 }
 
+TEST(MatchFinder, CheckProfiling) {
+  MatchFinder::MatchFinderOptions Options;
+  llvm::StringMap<llvm::TimeRecord> Records;
+  Options.CheckProfiling.emplace(Records);
+  MatchFinder Finder(std::move(Options));
+
+  struct NamedCallback : public MatchFinder::MatchCallback {
+    void run(const MatchFinder::MatchResult &Result) override {}
+    StringRef getID() const override { return "MyID"; }
+  } Callback;
+  Finder.addMatcher(decl(), &Callback);
+  std::unique_ptr<FrontendActionFactory> Factory(
+      newFrontendActionFactory(&Finder));
+  ASSERT_TRUE(tooling::runToolOnCode(Factory->create(), "int x;"));
+
+  EXPECT_EQ(1u, Records.size());
+  EXPECT_EQ("MyID", Records.begin()->getKey());
+}
+
 class VerifyStartOfTranslationUnit : public MatchFinder::MatchCallback {
 public:
   VerifyStartOfTranslationUnit() : Called(false) {}