If a program works in a debug build , but fails in a release build , it is likely that one of the compiler optimizations is exposing a defect in your source code 如果程序在调试版本中正常运行，但在发布版本中运行失败，则可能是某个编译器优化在您的源代码中发现了缺陷。
The classic compiler optimizations , such as dead code elimination , constant folding , constant propagation , elimination of partial redundancies , loop unrolling , etc . , are static analyses 典型的编译器最优化，如死代码消除、常数合并、常数传送、部分冗余的消除、循环展开等等，是静态分析。
There is a greater chance that stack variables will still be zero in a debug build compared to a release build because of compiler optimizations of stack variables in a release build 因为在发布版本中编译器对堆栈变量进行优化，所以与发布版本相比，堆栈变量在调试版本中仍然为零的可能性更大。
Previous research showed the sma architecture could achieve substantial performance boost and efficient resource utilization . compiler optimization holds a very important position in sma research 已有的研究表明该结构能够发出程序中混合并行性，达到较高的资源利用率，是一种很有前途的新体系结构。
Lastly , we summarized our research work . interprocedural analysis and optimization has great significance . although they introduce some large compiler - time cost , they represent a trend of compiler optimization 过程间分析和优化的意义是很重大的，虽然过程间分析和优化的开销很大，但是它代表了一种编译器优化的方向和趋势。
Ordinarily , threads are free to cache values for variables in such a way that they are not necessarily immediately visible to other threads whether it be in registers , in processor - specific caches , or through instruction reordering or other compiler optimizations , but if the developer has used synchronization , as shown in the code below , the runtime will ensure that updates to variables made by one thread prior to exiting a synchronized block will become immediately visible to another thread when it enters a 一般来说，线程以某种不必让其他线程立即可以看到的方式（不管这些线程在寄存器中、在处理器特定的缓存中，还是通过指令重排或者其他编译器优化） ，不受缓存变量值的约束，但是如果开发人员使用了同步，如下面的代码所示，那么运行库将确保某一线程对变量所做的更新先于对现有
With the great development of processors technology , compiler optimization techniques take more and more important role in the research of modern processors . not only can appropriate optimization algorithms generate high efficient target code , but also simplify the hardware control mechanism for processors 随着处理器技术的高速发展，编译优化的技术在现代处理器研究中表现出越来越重要的作用，因为合适的代码优化算法不仅可以产生高效率的目标代码，而且可以简化处理器的硬件控制机制。
