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code logs -> 2019 -> Fri, 18 Jan 2019 | < code.20190117.log - code.20190119.log > |
--- Log opened Fri Jan 18 00:00:50 2019 |
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05:47 | <&McMartin> | Oh man |
05:47 | <&McMartin> | Despite having way more registers and useful addressing modes, I think the 386 just showed the M68000 what for |
05:48 | <&McMartin> | 64-bit integer math is soooooooo much easier on the 386 |
06:32 | <&Reiver> | ...what. |
06:33 | <&McMartin> | Despite being a 32-bit chip, it's got special instructions that let you do 64-bit multiplies, divides, and bit-shifts without touching memory |
06:33 | <&McMartin> | Generally by reading or writing multiple registers at once |
06:34 | <&McMartin> | You have to do a lot more juggling with the other (generally acknowledged as better) chip because it loses data along the way, at least in its earliest incarnations |
06:34 | | * McMartin is trying to backport some nice routines into DOS-era systems but they're kind of full of 64-bit math, you see~ |
07:09 | <&McMartin> | Ha HA |
07:09 | <&McMartin> | Victory |
07:11 | <&McMartin> | My hand-written version of this code hits RAM "unnecessarily" half as often and is 15% smaller compared to gcc -m32 -O2. |
07:11 | <&McMartin> | Of course, without -m32 the "necessary" memory hits drop to 0 for all concerned >_> |
07:11 | <&McMartin> | Also looking at its generated code let me rewrite some bits more efficiently |
07:12 | <&McMartin> | ... but that "more efficiently" turned out to be "save one byte" |
09:57 | | Kindamoody[zZz] is now known as Kindamoody|afk |
10:45 | < simon_> | what word class is 'sent' in 'a sent letter'? that's not an adjective, is it? is it an adverb? |
11:09 | <~Vorntastic> | participle |
11:40 | <~Vorntastic> | Which is to say: it's an adjective formed from a verb via the participle form(s) |
11:41 | <@TheWatcher> | Which is to say: grammar causes headaches. |
11:42 | <@TheWatcher> | (But it's the best we've got. Thanks English. Thenglish.) |
11:59 | <~Vorntastic> | Attributive verb |
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18:27 | <&McMartin> | https://pbs.twimg.com/media/Dwg4vS3U8AEVDeY.jpg |
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--- Log closed Sat Jan 19 00:00:51 2019 |
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code logs -> 2019 -> Fri, 18 Jan 2019 | < code.20190117.log - code.20190119.log > |
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