3 ms·
64-bit support on ARM entails the implementation of AArch64 - not just widening the current registers to 64-bits and nothing else. AArch64 has a better instruc
by frankchn 12y ago
64-bit support on ARM entails the implementation of AArch64 - not just widening the current registers to 64-bits and nothing else.
AArch64 has a better instruction set and more general purpose registers (31 vs 16), so applications recompiled to target AArch64 should see performance benefits even if it only uses 1 MB of RAM and never encounters integers greater than 2^32.