GCC 13 vs. Clang 17 Compiler Benchmarks, Early Clang 18 & GCC 14 Development Benchmarks

As it's been a while since last delivering any competitive GCC versus LLVM Clang compiler competitive analysis and with the year quickly drawing a close, here's a fresh look at the GCC vs. Clang C/C++ compiler performance of various resulting application binaries tested on x86_64. GCC 13 vs. Clang 17 were tested as what's readily available on Ubuntu 23.10 Linux plus a look ahead in using the latest GCC 14 and LLVM Clang 18 development snapshots as of this week.