search for: r6instrinfo

...ns alongside the instruction definition. Repetition seems to be effectively reduced with a few simple Pat classes. Semantic information such as isBranch is still represented in the instruction definition meaning there isn't a complete split between MC-layer and codegen concerns. The Mips{64,32}r6InstrInfo.td does also factor out this information. This seems less compelling to me, but dissenting opinions are welcome! I've demonstrated both the "conventional" approach <https://gist.github.com/asb/0c61ebc131076c6186052c29968a491d#file-riscvinstrinfo_conventional-td> and the "s...