Clean-up and ergonomic tweaks for jumps#8

Closed

xen0n wants to merge 3 commits intoloongson:loongarch/upstream_v2from xen0n:canonicalize-jumps

+16-20

Commits on Aug 13, 2021

opcodes: LoongArch: make all non-native jumps desugar to canonical b{gt/le}[u] forms
xen0n
committed
opcodes: LoongArch: add "ret" instruction to reduce typing
xen0n
committed
opcodes: LoongArch: make beq/bne's operand order "rd, rj" to be consistent with all others
xen0n
committed