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> SSE2 is in nearly 100% of relevant x86_64 systems (first coming out in 2003). Not nearly, exactly 100%. The 64-bit ABI specifically requires SSE2 support.
by jcranmer 4y ago
> SSE2 is in nearly 100% of relevant x86_64 systems (first coming out in 2003).
Not nearly, exactly 100%. The 64-bit ABI specifically requires SSE2 support.
- dundarious 4y agoLast time I talked with someone about this, they convinced me there was some rare, possibly even research-only x86_64 chip that didn't support it, so my point is that if my hazy memory of someone else's argument is correct, that it doesn't matter, treat it as if it's exactly 100% anyway. It's 100% of what matters, so in practice I'm in full agreement with you.