Comment by fweimer
6 hours ago
Do you have a public reference for the “all future Intel CPUs” aspect? The AVX10 change (no more 256-bit-only EVEX tier) is well-documented in compiler patches and whatnot, but what I haven't seen so far is an unambiguous commitment that starting with 2027 (say), all new CPU models will support AVX10.
For example, Intel stated this:
> Intel® Advanced Vector Extensions 10 (Intel® AVX10) introduces a modern vector Instruction Set Architecture (ISA) that will be supported across future Intel® processors.
They don't actually say “all”, and it is probably meant to apply to future microarchitectures anyway. Depending on various factors, Intel may end up designing new CPUs based on existing microarchitectures well into the 2030s.
Intel® Advanced Vector Extensions 10.2 Architecture Specification, Revision 5.0
Page 18:
> 3.1 INTEL® AVX10 INTRODUCTION
> ...
> This ISA will be supported on all future processors, including Performance cores (P-cores) and Efficient cores (E-cores).
As you see, now they actually say "all future".
The Intel Nova Lake desktop and laptop CPUs and the Diamond Rapids server CPUs will mark a jump in the Intel ISA, by changing the CPUID CPU family number for the first time after a few decades and by introducing not only AVX-512 across all cores, to match AMD, but also the APX ISA extension, which adds features that remove some of the advantages of Arm Aarch64, by increasing to 32 the number of general-purpose registers and by adding double-register load/store instructions.