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by sharpneli
1231 days ago
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Not just X86, the older X86. Before Pentium Pro there was not even register renaming. So one was both register starved and the registers you saw where actually the registers you got. Even after that it was still somewhat starved but it alleviated the problem greatly. Nowadays X64 has a decent amounts of registers + the HW internally has several times more the registers, so saving one is almost meaningless. |
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