Bit mask commands are used for branch processing in vector operations.

For example, in matrix and vector operations, the combined multiplication and addition commands are used to improve performance and accuracy. For many programs that contain general computing-intensive kernels, programmers can use vector extension commands to greatly improve program execution performance. Modern processors all have superscalar and long pipelines, and complex internal structures, and they support vector extension units in the Complex Instruction Set Computer (CISC) or Reduced Instruction Set Computer (RISC) architecture. Then, which compiler is better? Which one should we use to compile and build programs and systems? Significance of a Good Compiler Through long-term development and iteration, GCC, Clang, and LLVM have become mature compilers in the industry. Clang is mainly used to provide performance superior to that of GCC. Clang is a C, C++, Objective-C, or Objective-C++ compiler that is compiled in C++ based on LLVM and released under the Apache 2.0 license. LLVM can serve as a background for compilers in multiple languages.

It can optimize program languages and links during compilation, runtime, and idle time and generate code. LLVM contains a series of modularized compiler components and tool chains. It is an official compiler for the GNU and Linux systems, and a main compiler for compiling and creating other UNIX operating systems. It is a set of free software released under the GNU General Public License (GPL) and GNU Lesser General Public License (LGPL). GCC is a program language compiler developed by GNU. Therefore, this document mainly compares GCC with Clang/LLVM. Visual C++ provides graphical user interfaces (GUIs) and is easy to debug, but it is not suitable for Linux platforms. Visual C++, GNU Compiler Collection (GCC), and Clang/Low Level Virtual Machine (LLVM) are three mainstream C/C++ compilers in the industry.

Introducing GNU Compiler Collection (GCC) and Clang/Low Level Virtual Machine (LLVM) comparing the performance of both C/C++ compilers

Free c compiler gcc