It actually hasn't. LLVM is consistently slower in most benchmarks. Not by a large amount, but it doesn't beat GCC for speed. The thing is that most compilers

It actually hasn't. LLVM is consistently slower in most benchmarks. Not by a large amount, but it doesn't beat GCC for speed. The thing is that most compilers these days are limited by the performance of the CPU itself, as they're getting within a few percent of the best you can do.