Timeline for Tips for golfing in x86/x64 machine code
Current License: CC BY-SA 4.0
4 events
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| May 18, 2018 at 21:07 | history | edited | l4m2 | CC BY-SA 4.0 |
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| May 18, 2018 at 20:22 | comment | added | Peter Cordes |
This also works the other direction, of course: add -128 instead of sub 128. Fun fact: compilers know this optimization, and also do a related optimization of turning < 128 into <= 127 to reduce the magnitude of an immediate operand for cmp, or gcc always prefers rearranging compares to reduce the magnitude even if it's not -129 vs. -128.
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| May 18, 2018 at 13:08 | history | edited | l4m2 | CC BY-SA 4.0 |
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| May 18, 2018 at 5:43 | history | answered | l4m2 | CC BY-SA 4.0 |