+
+ const CodeGenRegisterClass &getRegisterClass(Record *R) const {
+ const std::vector<CodeGenRegisterClass> &RC = getRegisterClasses();
+ for (unsigned i = 0, e = RC.size(); i != e; ++i)
+ if (RC[i].TheDef == R)
+ return RC[i];
+ assert(0 && "Didn't find the register class");
+ abort();
+ }
+
+ /// getRegisterClassForRegister - Find the register class that contains the
+ /// specified physical register. If there register exists in multiple
+ /// register classes or is not in a register class, return null.
+ const CodeGenRegisterClass *getRegisterClassForRegister(Record *R) const {
+ const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
+ const CodeGenRegisterClass *FoundRC = 0;
+ for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
+ const CodeGenRegisterClass &RC = RegisterClasses[i];
+ for (unsigned ei = 0, ee = RC.Elements.size(); ei != ee; ++ei) {
+ if (R == RC.Elements[ei]) {
+ if (FoundRC) return 0; // In multiple RC's
+ FoundRC = &RC;
+ break;
+ }
+ }
+ }
+ return FoundRC;
+ }