GitLab

(not completely done)

Merge jit-test branch to master



See merge request !2

also fixed a bug related with exception block label

Now it can handle both local vars and constants.

Currently only BinOp is implemented. More instructions will be built
later.

(for callee saved regs, we insert push/pop before reg alloc. and
after allocation, remove unnecessary ones)

we never go back to previous passes, since it is not necessary

convention(stack args), and need to optimize spill1 code

Client may pass a name with AT or PERCENTAGE, but internally MuName
does not contain that.