(Untitled)

[pozorvlak]

I have just written the following commit message:
"Branch over unconditional jump" hack for arbitrary-length brcc

Comments

[necaris]

Genius :-)

[pozorvlak]

Thanks!

I should point out that the blame credit for the "branch over unconditional jump" trick properly belongs to aaroncrane. The idea to do it all in the assembly-emission pass (rather than, say, doing it in IR and fixing up the control-flow graph accordingly) was all mine, though. As was the decision to create a new L_BRCC_HACK goto-label family (using raw printfs) rather than trying to work out how to access the existing label-creation system.

[gareth_rees]

Do you go back and rewrite once you know whether the jump distance is within the limit?

[pozorvlak]

Not yet, but that's a possibility (and probably an easier one than accurately calculating the jump distance ahead-of-time). Thanks!