Checkers may be enabled/disabled using the following options: -enable-checker [checker name] -disable-checker [checker name] [...] AVAILABLE CHECKERS: + core.CallAndMessage Check for logical errors for function calls and Objective-C message expressions (e.g., uninitialized arguments, null ...
-fno-builtin-<function> Disable special handling and optimizations for the specific library function. For example, -fno-builtin-strlen removes any special handling for the strlen() library function. -fno-builtin-std-<function> Disable special handling and optimizations for the specific C++ standard...
(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0 #14 0x00005559233a8fd3 ...
--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...
{ // SPIR-V has core support for atomic ops, and Int32 is always available; // we take the maximum because it's possible the Host supports wider types. MaxAtomicInlineWidth = std::max<unsigned char>(MaxAtomicInlineWidth, 32); - resetDataLayout("e-p:32:32-i64:64-v16:16-v24:32-...
for automatic library linking -fno-builtin-<value> Disable implicit builtin knowledge of a specific function -fno-builtin Disable implicit builtin knowledge of functions -fno-common Compile common globals like normal definitions -fno-constant-cfstrings Disable creation of CodeFoundation-type constant ...
/usr/lib/llvm/15/bin/clang-15 -cc1 -triple x86_64-pc-linux-gnu -emit-obj --mrelax-relocations -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name fixdep.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-...
DisableExpand:该标志在预处理器内部使用,用来表示identifier令牌禁用宏扩展。 NeedsCleaning:如果令牌的原始拼写包含三字符组或转义的换行符,则设置此标志。 语法分析(Parsing)与语义分析 此阶段对输入文件进行语法分析,将预处理器生成的Tokens转换为语法分析树;一旦生成语法分析树后,将会进行语义分析,执行类型检查和代码格...
也可以在 xcode 中设置:target -> build Setting -> Optimization Level 4.6.6 bitCode Xcode 7以后,如果开启bitcode,苹果会对.ll的IR文件做进一步的优化,生成.bc文件的中间代码。 通过下面命令,使用优化后的IR代码生成.bc代码: clang -emit-llvm -c main.ll -o main.bc ...
clang前端基础系统概要 4.1编译器Clang会代替GCC吗? Clang是一个C语言、C++、Objective-C语言的轻量级编译器,遵循BSD协议。 Clang编译速度快、内存占用小、兼容GCC等一些优秀的特点使得很多工具都在使用它。 现在Clang和GCC的异同。 4.1.1 GCC概念