ARM和GCC优化等级optimization level 参考链接: Arm Compiler for Embedded User Guide Optimize Options (Using the GNU Compiler Collection (GCC)) ARM优化等级参考: ARM 建议使用: 以下为STM32 CUBE IDE中的优化等级,使用的时GCC 12 工具链: 在需要进行Debug时,不建议开启任何优化: STM32CubeIDE user guide -...
TI C/C++ Compiler optimization This thread has been locked. If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question. ...
inline:当inline函数不再保持inline时 (比如对inline函数取地址); disable-optimization:当不能执行指定的优化时.(需要太多时间或系统资源). 可以使用 -Werror时所有的警告都变成错误,使出现警告时也停止编译.需要和指定警告的参数一起使用. 优化: gcc默认提供了5级优 化选项的集合: -O0:无优化(默认) -O和-O1...
compiler does not perform loop unrolling or function inlining when you specify `-O2 '. As compared to `-O ', this option increases both compilation time and the performance of the generated code. `-O2 ' turns on all optimization flags specified by `-O '. It also turns on the following ...
The compiler does not perform loop unrolling or function inlining when you specify `-O2 '. As compared to `-O ', this option increases both compilation time and the performance of the generated code.`-O2 ' turns on all optimization flags specified by `-O '. turns on the following ...
Optimization -O0 禁止编译器进行优化。默认为此项。 -O -O1 尝试优化编译时间和可执行文件大小。 -O2 更多的优化,会尝试几乎全部的优化功能,但不会进行“空间换时间”的优化方法。 -O3 在-O2 的基础上再打开一些优化选项:-finline-functions, -funswitch-loops 和 -fgcse-after-reload 。
With -O, the compiler tries to reduce code size and execution time, without performing any optimizations that take a great deal of compilation time.-O turns on the following optimization flags:-fauto-inc-dec -fcompare-elim -fcprop-registers -fdce -fdefer-pop -fdelayed-branch -...
优化选项 (OPTIMIZATION OPTION) :(-O0不进行优化处理,-O或-O1优化生成代码 -O2进一步优化 -O3比-O2更进一步优化,包括inline函数) 目标机选项 (TARGET OPTION) :(-b machine -V version ) 机器相关选项 (MACHINE DEPENDENT OPTION):(-m486 针对 486 进行代码优化) ...
In summary, optimizing C++ performance with GCC involves leveraging advanced optimization options provided by the compiler, comparing performance across different compilers, and implementing best practices like using precompiled headers and analyzing code to enhance overall efficiency. ...
Optimization -O0 禁止编译器进行优化。默认为此项。 -O -O1 尝试优化编译时间和可执行文件大小。 -O2 更多的优化,会尝试几乎全部的优化功能,但不会进行“空间换时间”的优化方法。 -O3 在-O2 的基础上再打开一些优化选项:-finline-functions, -funswitch-loops 和 -fgcse-after-reload 。 -Os 对生成文件...