gcc/resource.c mark_target_live_regs Question

[Richard Henderson]

On Thu, Feb 15, 2001 at 09:43:46AM -0800, Mark Mitchell wrote:
> We're making some assumption that reorg confuses everything, but not
> across BARRIERs?  Is that it?

Exactly.

> mark_target_live_regs mark all registers live if find_basic_block goes
> back, say, more than 1000 instructions ...

50 or 100 is probably a better default.  Remember, that
if you have N insns in the block you're still going to
scan N**2/2 insns.


r~