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From: John R.
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0xF 0xD 0xF is "prefetchw (%rdi)". This is purely a performance optimization, so use a binary editor to change those three bytes to 0x90 0x90 0x90 which is "nop; nop; nop". There are likely to be more instances, so try to figure out how to tell the compiler to avoid that sequence (or remove or disable the optimization flag.) -- |