Merge pull request #1768 from riscv-software-src/commit-log-ordered

Use ordered map for commit log

riscv/processor.h

@@ -62,7 +62,7 @@ struct insn_desc_t
 };
 
 // regnum, data
-typedef std::unordered_map<reg_t, freg_t> commit_log_reg_t;
+typedef std::map<reg_t, freg_t> commit_log_reg_t;
 
 // addr, value, size
 typedef std::vector<std::tuple<reg_t, uint64_t, uint8_t>> commit_log_mem_t;