check argument and return types statically

Author: kripken

lib/Target/JSBackend/CallHandlers.h

@@ -53,7 +53,24 @@ DEF_CALL_HANDLER(__default__, {
         errs().resetColor();
         errs() << " unexpected number of arguments " << utostr(ActualNumArgs) << " in call to '" << F->getName() << "', should be " << utostr(TypeNumArgs) << "\n";
       }
-      // TODO: also check types of arguments, but must take into account JS types, not LLVM types
+      for (unsigned i = 0; i < std::min(TypeNumArgs, ActualNumArgs); i++) {
+        Type *TypeType = FT->getParamType(i);
+        Type *ActualType = CI->getOperand(i)->getType();
+        if (getFunctionSignatureLetter(TypeType) != getFunctionSignatureLetter(ActualType)) {
+          errs().changeColor(raw_ostream::YELLOW);
+          errs() << "warning:";
+          errs().resetColor();
+          errs() << " unexpected argument type " << *ActualType << " at index " << utostr(i) << " in call to '" << F->getName() << "', should be " << *TypeType << "\n";
+        }
+      }
+      Type *TypeType = FT->getReturnType();
+      Type *ActualType = CI->getType();
+      if (getFunctionSignatureLetter(TypeType) != getFunctionSignatureLetter(ActualType)) {
+        errs().changeColor(raw_ostream::YELLOW);
+        errs() << "warning:";
+        errs().resetColor();
+        errs() << " unexpected return type " << *ActualType << " in call to '" << F->getName() << "', should be " << *TypeType << "\n";
+      }
     }
   } else {
     if (isAbsolute(CV)) return "abort(); /* segfault, call an absolute addr */";