llvm19_clang

Description

LLVM is a collection of modular and reuseable compiler and and toolchain technologies. The LLVM compiler system for C and C++ includes the following:

- Front-ends for C, C++, Objective-C, Fortran, etc. based on the GCC 4.2 parsers. They support the ANSI-standard C and C++ languages to the same degree that GCC supports them. Additionally, many GCC extensions are supported. - A stable implementation of the LLVM instruction set, which serves as both the online and offline code representation, together with assembly (ASCII) and bytecode (binary) readers and writers, and a verifier. - A powerful pass-management system that automatically sequences passes (including analysis, transformation, and code-generation passes) based on their dependences, and pipelines them for efficiency. - A wide range of global scalar optimizations. - A link-time interprocedural optimization framework with a rich set of analyses and transformations, including sophisticated whole-program pointer analysis, call graph construction, and support for profile-guided optimizations. - An easily retargettable code generator, which currently supports X86, X86-64, PowerPC, PowerPC-64, ARM, Thumb, SPARC, MIPS, MSP430, SystemZ, and XCore. - A Just-In-Time (JIT) code generation system, which currently supports X86, X86-64, ARM, AArch64, Mips, SystemZ, PowerPC, and PowerPC-64. - Support for generating DWARF debugging information. - A C back-end useful for testing and for generating native code on targets other than the ones listed above. - A profiling system similar to gprof. - A test framework with a number of benchmark codes and applications. - APIs and debugging tools to simplify rapid development of LLVM components.