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0 pointsnuc1e0n3y ago0 comments

Ensuring register accesses are interleaved in a good way right?

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Register renaming allows CPUs to eliminate stalls due to reuse of a register; I have not noticed any compiler putting particular emphasis on interleaving accesses well.

That is actually more of a problem on in order CPUs because a single stall will hold up the entire CPU instead of take longer to commit while other stuff is going on.

nuc1e0nOP3y ago

So if compilers did this better then processors wouldn't need the extra complexity and the transistors needed to support it themselves?

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thethirdone3y ago

Register renaming allows CPUs to eliminate stalls due to reuse of a register; I have not noticed any compiler putting particular emphasis on interleaving accesses well.

That is actually more of a problem on in order CPUs because a single stall will hold up the entire CPU instead of take longer to commit while other stuff is going on.

nuc1e0nOP3y ago

So if compilers did this better then processors wouldn't need the extra complexity and the transistors needed to support it themselves?

j / k navigate · click thread line to collapse