--cppSwitchtoC++mode(defaultfor.cppfiles)切换到C++模式(默认.cpp文件) -O0Minimumoptimization最小优化级别 -O1Restrictedoptimizationfordebugging受限的调试级别优化 -O2Highoptimization高优化 -O3Maximumoptimization最大优化 -OspaceOptimizeforcodesize对代码大小进行优化 -OtimeOptimizeformaximumperformance优化最大优化...
clang’s -Oz optimizes for size even when it hurts speed, even using push 1 / pop rax instead of mov eax, 1 , so that’s only interesting for code高尔夫。 甚至-Og (最小优化)可能是您想要查看的内容,具体取决于您的目标。 -O0 充满了存储/重新加载噪音,这使得它更难遵循, 除非你使用 ...
Optimize for size /Ot Optimize for speed /O<value> Optimization level /o <file or directory> Set output file or directory (ends in / or \) /P Preprocess to file /Qvec- Disable the loop vectorization passes /Qvec Enable the loop vectorization passes /showIncludes Print info about included...
如果代码返回相同的结果，则优化器可能会将代码移出循环。其输入值在调用之间没有变化）。使用volatile限定...
如果GCC的优化器确定不需要输出变量，它们有时会丢弃asm语句。此外，如果优化器认为代码将总是返回相同的...
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) @@ -1147,6 +1174,11 @@ ifdef stackp-check @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ $(stackp-flag) available but compil...
c 文件) --cpp Switch to C++ mode (default for .cpp files) 切换到C++模式 (默认.cpp 文件) -O0 Minimum optimization 最小优化级别 -O1 Restricted optimization for debugging 受限的调试级别优化 -O2 High optimization 高优化 -O3 Maximum optimization 最大优化 -Ospace Optimize for codesize 对代码大小...
OPTIMIZE_FLAG="" # Don't use O2 optimization for debug builds fi done BUILD_FLAG="$COMPILER_FLAG $DEBUG_FLAG $OPTIMIZE_FLAG" if [[ -z "$INSTALL_PATH" ]]; then echo "Please source envsetup.sh firstly." exit 1 fi echo "BUILD_PATH: $BUILD_PATH" echo "INSTALL_PATH: $INSTALL_PATH"...
offers improved error messages and diagnostics, incorporates advanced optimization techniques, and can be used as a drop-in replacement for GCC in many cases. With its focus on modern features and compatibility, clang provides developers with a powerful tool to compile and ...
Doxygen will then generate output that is tailored for Fortran. # The default value is: NO. OPTIMIZE_FOR_FORTRAN = NO # Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL # sources. Doxygen will then generate output that is tailored for VHDL. ...