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Was there ever a time when SSE was not a part of baseline amd64? Just going off the dates, SSE showed up in Pentium 3, and if I remember correctly AMD picked it
by int_19h 1y ago
Was there ever a time when SSE was not a part of baseline amd64? Just going off the dates, SSE showed up in Pentium 3, and if I remember correctly AMD picked it up in 32-bit Athlons already.
- mort96 1y agoI think you're right. I should've said x86 (or maybe IA-32?), not amd64.
- dzaima 1y agogcc, via -m32, still defaults to no SSE, i.e. pre-1999, i.e. ≥26 years and counting for increasing default. clang, as far back as Compiler Explorer goes (i.e. clang 3.0.0, i.e. 2011), always assumes SSE for -m32; presumably because there's nothing to be backwards-compatible to, unlike gcc. Doesn't look particularly good for "default will just change at some point", though we can hope.