diff options
| -rw-r--r-- | llvm/include/llvm/ProfileData/SampleProf.h | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/llvm/include/llvm/ProfileData/SampleProf.h b/llvm/include/llvm/ProfileData/SampleProf.h index d15b96d..726e6b8 100644 --- a/llvm/include/llvm/ProfileData/SampleProf.h +++ b/llvm/include/llvm/ProfileData/SampleProf.h @@ -324,7 +324,8 @@ struct LineLocationHash { LLVM_ABI raw_ostream &operator<<(raw_ostream &OS, const LineLocation &Loc); -/// Key represents the id of a vtable and value represents its count. +/// FunctionId refers to vtable symbol (the type of C++ polymorphic class), and +/// value represents its count. /// TODO: Rename class FunctionId to SymbolId in a separate PR. using TypeCountMap = std::map<FunctionId, uint64_t>; @@ -1016,13 +1017,12 @@ public: return CallsiteSamples; } - /// Return all the callsite type samples collected in the body of the - /// function. + /// Return vtable access sampels for the C++ types collected. const CallsiteTypeMap &getCallsiteTypeCounts() const { return VirtualCallsiteTypeCounts; } - /// Returns the type samples for the un-drifted location of \p Loc. + /// Returns vtable access samples for the un-drifted location of \p Loc. TypeCountMap &getTypeSamplesAt(const LineLocation &Loc) { return VirtualCallsiteTypeCounts[mapIRLocToProfileLoc(Loc)]; } @@ -1353,10 +1353,11 @@ private: /// collected in the call to baz() at line offset 8. CallsiteSampleMap CallsiteSamples; - /// Map virtual callsites to the vtable from which they are loaded. + /// Map a virtual callsite to the lsit of accessed vtables, The virtual + /// callsite is referenced by its source location, and the value is the list + /// of vtables and their sampled counts. /// - /// Each entry is a mapping from the location to the list of vtables and their - /// sampled counts. For example, given: + /// For example, given: /// /// void foo() { /// ... |