3 ms·
> true. technically speaking, it is long gone - any Intel CPU since about Pentium Pro is actually a well-hidden RISC, because it is more efficient. Sure that re
by astrange 3y ago
> true. technically speaking, it is long gone - any Intel CPU since about Pentium Pro is actually a well-hidden RISC, because it is more efficient. Sure that requires a pretty beefy CISC decoder in front, but the sheer power of having a virtual 8086 mode next to amd64 must totally justify all that extra TDP.
It is not, the µcode on an x86 is still often "CISCy" and rightfully so - a complicated instruction like "lea" is still perfectly suited to hardware.
- adgjlsfhk1 3y agothis is true, but modern RISC cpus are also pretty CISCy now. The risc-V vector extension has an vfwmacc.vf which is a broadcasted vectorized widening fused multiply accumulate instruction.