Re:How many registers does an x86-64 CPU have? (2020)
by adrian_b on Monday February 16, 2026 @12:10PM
(#47037524)
Yes, the argument for increasing the number of GPRs is precisely to eliminate the register spilling that in necessary in x86-64 programs whenever a program has already used all available architectural registers, a register spilling that does not happen whenever the same program is compiled for Aarch64 or IBM POWER.
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