If their goal is to save on register file space, they're barking up the wrong tree, IMO. The Skylake-X die[0], for example, dedicates only about 1% to the integ

If their goal is to save on register file space, they're barking up the wrong tree, IMO. The Skylake-X die[0], for example, dedicates only about 1% to the integer register file, and only about 2.5% for the floating point register file. The decoder and scheduler also take up only single digit percents. Granted, this is a top of the line superscalar processor with AVX-512 and megabytes of cache, but my point still stands. The vast majority of the gates are in everything else: cache, execution units, branch prediction, load/store, die interfaces, etc. [0]: https://twitter.com/GPUsAreMagic/status/1256866465577394181 https://twitter.com/GPUsAreMagic/status/1256866465577394181