Improve generated MIPS code for conditional expressions and branches by delaying

runtime/vm/disassembler_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/disassembler.h"
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 #include "platform/assert.h"
 
@@ skipping 172 matching lines @@
 // the current instructions. The format string points to the first
 // character of the option string (the option escape has already been
 // consumed by the caller.)  FormatOption returns the number of
 // characters that were consumed from the formatting string.
 int MIPSDecoder::FormatOption(Instr* instr, const char* format) {
   switch (format[0]) {
     case 'c': {
       ASSERT(STRING_STARTS_WITH(format, "code"));
       buffer_pos_ += OS::SNPrint(current_position_in_buffer(),
                                 remaining_size_in_buffer(),
-                                "%d", instr->BreakCodeField());
+                                "0x%x",
+                                 instr->BreakCodeField());
       return 4;
     }
     case 'h': {
       ASSERT(STRING_STARTS_WITH(format, "hint"));
       if (instr->SaField() == 0x10) {
         // The high bit of the SA field is the only one that means something for
         // JALR and JR. TODO(zra): Fill in the other cases for PREF if needed.
         buffer_pos_ += OS::SNPrint(current_position_in_buffer(),
                                    remaining_size_in_buffer(),
                                    ".hb");
@@ skipping 553 matching lines @@
   decoder.InstructionDecode(instr);
   OS::SNPrint(hex_buffer, hex_size, "%08x", instr->InstructionBits());
   if (out_instr_len) {
     *out_instr_len = Instr::kInstrSize;
   }
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS