编译程序

The second part is the design of the complier.

第二部分是对编译程序的研究。

THE FIRST ANALYZES THE COMPLETE SOURCE PROGRAM, MUCH THEWAY A COMPLIER DOES, AND TRANSLATES IT INTO AN INTERNAL

第一分析完全的源程序，很类似于编译程序做，以及把它翻译成内部形式。

Based on a lot of experiment results, a conclusion is drawn: comparing with other factors, the performance of branch handling strategy is the key limits of processor to exploit the instruction level parallelism existed in nonscientific code, cache miss have severe effect on superscalar processor's performance when it runs scientific code. Second, in order to reduce the branch penalty and improve the performance of superscalar processor, a new branch handling strategy—a classification based hierarchical branch handling strategy, CHBHS is proposed. It first expands the traditional processor architecture to support multiple condition code, conditional execution and Mbranch instruction, as a result, compiler can reduce the number of static conditional branch when the code is generated. Then, CHBHS tries to use the best suitable mechanism to deal with different branch base on their different behavior. CHBHS can predict the target address of unconditional branch, subroutine call and conditional branch by buffering their target address in branch target buffer, a newly proposed high efficient return address stack is used to reduce the penalty of subroutine return instruction, a new Counter Register Stack is also proposed to reduce the penalty of loop-closing branch to zero, and dynamic branch predictor is incorporate with branch target buffer to predict the outcome of conditional branch.

基于上述结论，为了尽量消除转移指令对处理器开发指令级并行性能力的影响，进一步提高处理器性能，在详尽分析目前已存在的转移处理策略的特点与局限性的基础上，首次提出了一种新的转移处理策略即基于分类的层次转移处理策略CHBHS(Classification Based Hierarchical Branch Handling Strategy)，它首先通过扩展传统的体系结构，支持多条件码、条件式执行及多分支转移技术，以使编译程序在进行代码生成时可尽量少生成条件转移指令，从而减少静态条件转移指令的数目；其次，基于不同的转移指令的行为不同这一事实，提出了对不同的转移指令采用不同的机制进行处理的思想，即对无条件转移指令和函数调用指令以及条件转移指令的目标地址，采用转移目标缓冲器来预测，对于函数返回指令，采用所提出一种的高效返回地址栈来预测其目标地址，对于大多数循环控制转移指令，采用所提出的Counter Register Stack来将其所可能带来的损失减少为0，对于其他的条件转移指令采用动态预测机制来预测其方向。

An external variable must be defined, exactly once, outside of any function; this sets aside storage for it.

外部变量必须定义在所有函数之外，且只能定义一次，定义后编译程序将为它分配存储单元。

This paper introduces the design idea and the syntax of a Compiler used in teaching with focus on the analysis of the main program,block and several functional program.

介绍了教学编译程序实例的设计思想和语法规则，并着重对主程序、分程序和几个功能性程序给予了详细分析。

Because the inline assembler doesn$1$t support all of Microsoft Macro Assembler$1$s macro and data directives, you may find it more convenient to use MASM for such modules.

因为内联编译程序不支持所有的MASM的宏和伪指令，你也许会发现对于这样的模块使用MASM会更加方便一些。

A complete scan of the source code by the compiler or assembler.

由编译程序或汇编程序对源程序代码的一次完整的扫描。

Most ADA compilers make several passes, one of which devoted signally to the preprocession of generic unit.

一般的ADA编译程序多数是多次扫描的，对类属单元的处理往往是单独进行一次扫描，先进行预处理。

Writing a compiler which did good instructielection for the VAX was non-trivial.

要为VAX系统编写一个编译程序，选择指令确实不容易。

Matlab convolutional code compiler, the Chinese have detailed notes, and I hope to help you.

详细说明： matlab卷积码编译程序，有详细的中文注释，希望对你有所帮助。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。