那么，就需要对LLVM有了解，如整体架构：The Architecture of Open Source Applications: LLVM同时也需要知...
pass可以分为两类,一类是analysis pass,一类是transform pass。可以简单理解为前者不改变ir,仅通过对ir的分析获取程序的信息,如有多少操作数,代码可视化等等;后者基于analysis pass的分析结果,改变ir,对其进行优化,提高程序执行的效率。 将source code转换为dataflow,需要基于程序的进行分析,提取control flow,并进一步基于...
/// The expansion location is the line in the source code where the macro /// was expanded (the return statement), the spelling location is the /// location in the source where the macro was originally defined, /// and the presumed location is where the line directive states that ///...
-fdiagnostics-absolute-paths 在诊断中打印绝对路径 -fdiagnostics-hotness-threshold=<number> 如果优化备注没有至少此配置文件计数,则阻止输出优化备注 -fdiagnostics-parseable-fixits 以机器可解析的形式打印修复它 -fdiagnostics-print-source-range-info 以数字形式打印源范围跨度 -fdiagnostics-show-hotness Enable profi...
不链接 --asm Output assembly code as well as object code 输出汇编以及obj文件 -S Output assembly code instead of object code 只输出汇编文件 --interleave Interleave source with disassembly (use with --asm or -S) 交叉反汇编 (use with --asm or -S) -E Preprocess the C source code only ...
struct SourceLocation { int Line; int Col; }; static SourceLocation CurLoc; static SourceLocation LexLoc = {1, 0}; static int advance() { int LastChar = getchar(); if (LastChar == '\n' || LastChar == '\r') { LexLoc.Line++; LexLoc.Col = 0; } else LexLoc.Col++; return...
LLVM is currently the point of interest for many firms, and has a very active open source community. It provides us with a compiler infrastructure that can be used to write a compiler for a language. It provides us with a set of reusable libraries that can be used to optimize code, and...
source manager. llvm::IntrusiveRefCntPtr<SourceManager> SourceMgr; /// The preprocessor. llvm::IntrusiveRefCntPtr<Preprocessor> PP; /// The AST context. llvm::IntrusiveRefCntPtr<ASTContext> Context; /// The AST consumer. OwningPtr<ASTConsumer> Consumer; /// \brief The semantic analysis object...
Getting the Source Code and Building LLVM The LLVM Getting Started documentation may be out of date. The Clang Getting Started page might have more accurate information. This is an example workflow and configuration to get and build the LLVM source: ...
Getting the Source Code and Building LLVM Consult the Getting Started with LLVM page for information on building and running LLVM. For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide. Getting in touch Join the LLVM Discourse forums, ...