Documentation

Arguments

:: Instruction instr
=> BlockMap RegSet	maps the unique of the blockid to the set of vregs that are known to be live on the entry to each block.
-> BlockId	id of the current block
-> instr	branch instr on the end of the source block.
-> RegM ([NatBasicBlock instr], instr)

For a jump instruction at the end of a block, generate fixup code so its vregs are in the correct regs for its destination.