"Eric Fisher" <[EMAIL PROTECTED]> writes: > In mips.md, conditional branch insns are all set with the attribute > value 'branch'. But floating point instructions such as bc1f will > reserve falu unit instead of ialu. So there's a problem when you try > to describe pipeline for 'branch' insns. Define the ialu as the > reservation for all 'branch' insns? Is it OK?
It's certainly OK to split to "branch" into "ibranch" and "fbranch" if there's a use for it. The only reason we haven't done so up till now is because no-one's really needed to. That's the way things usually work the "type" attribute: it starts out as coarse-grained as possible, then we add new classifications when we need them. Richard
