Arseny Kapoulkine cc51e616ce CodeGen: Optimize vector ops for X64 when the source is computed (#1174) ... With the TAG_VECTOR change, we can now confidently distinguish cases when the .w component contains TVECTOR tag from cases where it doesn't: loads and tag ops produce the tag, whereas other instructions don't. We now take advantage of this fact and only apply vandps with a mask when we need to. It would be possible to use a positive filter (explicitly checking for source coming from ADD_VEC et al), but there are more instructions to check this way and this is purely an optimization so it is allowed to be conservative (as in, the cost of a mistake here is a potential slowdown, not a correctness issue). Additionally, this change only performs vandps once when the arguments are the same instead of doing it twice. On the function that computes a polynomial approximation this change makes it ~20% faster on Zen4.		2024-03-01 03:32:43 -08:00
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include	CodeGen: Extract all vector tag patching into TAG_VECTOR (#1171)	2024-02-21 07:06:11 -08:00
src	CodeGen: Optimize vector ops for X64 when the source is computed (#1174)	2024-03-01 03:32:43 -08:00