GCC 11 vs. LLVM Clang 12 Performance On The Intel Core i9 11900K Is A Heated Race

As we have been seeing on other systems, the latest GCC and LLVM Clang compilers on x86_64 are really delivering neck-and-neck performance. LLVM Clang has made many strides in the past few years where for x86_64 (and AArch64) is largely at parity to the GNU Compiler Collection in terms of the performance of the generated binaries.

For some codebases/workloads, LLVM Clang does deliver measurable gains over GCC.

While in other cases, the GNU Compiler Collection still holds its ground.