[exDM69]

This article could use some disassembly (and LLVM IR) from compiled code to see what a piece of Rust SIMD code looks like when compiled for different architectures. No doubt you've done this when debugging, but it would also be useful for the rest of us.

How well does it work in general? When you write SIMD code, can the compiler keep the values in vector registers or is there spilling going on?

[dbaupp]

As you can see from the benchmarks, it works basically as well as industrial C/C++ compilers like Clang (if not slightly better) and GCC (although GCC's older and more optimised backend leaps ahead of the LLVM-based compilers in some cases).

I'm planning follow up posts which may involve more assembly/IR, but this is designed to be an introduction/high-level post, and the graphs are meant to serve as a summary/replacement for digging through reems of assembly.