Maybe LLVM doesn't have time for performance improvements due to still reading through 30000 open issues, which also include miscompilations leading to incorrect results at runtime?
For example, my bug report that `+= 2` is broken has not been acknowledged (read?) by anyone for 3 years:
const size_t n = 13; // triggers the issue
#pragma omp parallel for
for (uint32_t i = 0; i < n; i += 2) { // counts PAST 13!
For example, my bug report that `+= 2` is broken has not been acknowledged (read?) by anyone for 3 years:
https://github.com/llvm/llvm-project/issues/70687