Comment by PeCaN
9 years ago
Instruction set makes much less of a difference than the actual microarchitecture. For an extreme example, see Pentium 4 vs Core. Something that runs fast on one could be dramatically different on the other.
The only time ISA really influences optimization is for unique ones like IA-64/Itanium. Otherwise, optimizing for e.g. a modern Xeon vs a POWER8 is not terribly different.
Why was this flag killed?
I tend to have opinions that run contrary to Y Combinator's business interests. Combined with me being entirely too provocative sometimes, my comments are (understandably) flagkilled by default.