+static void BuildHistogram(const Matcher *M, std::vector<unsigned> &OpcodeFreq){
+ for (; M != nullptr; M = M->getNext()) {
+ // Count this node.
+ if (unsigned(M->getKind()) >= OpcodeFreq.size())
+ OpcodeFreq.resize(M->getKind()+1);
+ OpcodeFreq[M->getKind()]++;
+
+ // Handle recursive nodes.
+ if (const ScopeMatcher *SM = dyn_cast<ScopeMatcher>(M)) {
+ for (unsigned i = 0, e = SM->getNumChildren(); i != e; ++i)
+ BuildHistogram(SM->getChild(i), OpcodeFreq);
+ } else if (const SwitchOpcodeMatcher *SOM =
+ dyn_cast<SwitchOpcodeMatcher>(M)) {
+ for (unsigned i = 0, e = SOM->getNumCases(); i != e; ++i)
+ BuildHistogram(SOM->getCaseMatcher(i), OpcodeFreq);
+ } else if (const SwitchTypeMatcher *STM = dyn_cast<SwitchTypeMatcher>(M)) {
+ for (unsigned i = 0, e = STM->getNumCases(); i != e; ++i)
+ BuildHistogram(STM->getCaseMatcher(i), OpcodeFreq);
+ }
+ }
+}
+
+void MatcherTableEmitter::EmitHistogram(const Matcher *M,
+ formatted_raw_ostream &OS) {