Move where emitRegClassByHwModeDecoders is called

Author: arsenm

llvm/utils/TableGen/DecoderEmitter.cpp

@@ -910,8 +910,6 @@ void DecoderEmitter::emitRegClassByHwModeDecoders(
 void DecoderEmitter::emitDecoderFunction(formatted_raw_ostream &OS,
                                          const DecoderSet &Decoders,
                                          unsigned BucketBitWidth) const {
-  emitRegClassByHwModeDecoders(OS);
-
   // The decoder function is just a big switch statement or a table of function
   // pointers based on the input decoder index.
 
@@ -2080,6 +2078,8 @@ template <typename T> constexpr uint32_t InsnBitWidth = 0;
     emitInstrLenTable(OS, InstrLen);
   }
 
+  emitRegClassByHwModeDecoders(OS);
+
   // Map of (bitwidth, namespace, hwmode) tuple to encoding IDs.
   // Its organized as a nested map, with the (namespace, hwmode) as the key for
   // the inner map and bitwidth as the key for the outer map. We use std::map