alexfh added a comment.
A few nits. Otherwise looks good, if Sam has no objections.
================
Comment at: clang-tidy/performance/UnnecessaryValueParamCheck.cpp:34
@@ -29,1 +33,3 @@
+template <typename S> bool isSetDifferenceEmpty(const S &S1, const S &S2) {
+ for (const auto &E : S1)
----------------
+1 to `isSubset`. And please add a comment explaining what should be a subset
of what for this function to return `true`.
================
Comment at: clang-tidy/utils/Matchers.h:50
@@ +49,3 @@
+AST_MATCHER_FUNCTION(ast_matchers::TypeMatcher, isReferenceToConst) {
+ return ast_matchers::referenceType(ast_matchers::pointee(
+ ast_matchers::qualType(ast_matchers::isConstQualified())));
----------------
How about `using ast_matchers;` in this function to make the statement easier
to read?
================
Comment at: clang-tidy/utils/TypeTraits.cpp:129
@@ +128,3 @@
+ auto *Record = Type->getAsCXXRecordDecl();
+ if (!Record || !Record->hasDefinition())
+ return false;
----------------
Maybe simplify this a bit?
return Record && Record->hasDefinition() &&
Record->hasNonTrivialMoveAssignment();
================
Comment at: clang-tidy/utils/TypeTraits.cpp:136
@@ +135,3 @@
+ auto *Record = Type->getAsCXXRecordDecl();
+ if (!Record || !Record->hasDefinition())
+ return false;
----------------
ditto
================
Comment at: clang-tidy/utils/TypeTraits.h:32
@@ -31,1 +31,3 @@
+// Returns true if Type has a non-trivial move constructor.
+bool hasNonTrivialMoveConstructor(QualType Type);
----------------
Please use doxygen comments (`///`) and enclose inline code snippets in
backquotes. The other function comments in this file should also be doxygen,
I've fixed them in r272994.
http://reviews.llvm.org/D20277
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