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|    comp.lang.asm.x86    |    Ahh, the lost art of x86 assembly    |    4,675 messages    |
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|    Message 3,813 of 4,675    |
|    Rick C. Hodgin to Bart    |
|    Re: Fast conversion to a boolean of 0 or    |
|    09 Mar 19 05:23:41    |
      From: rick.c.hodgin@gmail.com              On Saturday, March 9, 2019 at 7:32:43 AM UTC-5, Bart wrote:       > On 08/03/2019 23:47, bart4858@nospicedham.gmail.com wrote:> On Friday, 8       > March 2019 12:52:40 UTC, Bart wrote:       > > The loop time is for an empty loop....       >       > Rick said (it might have been in an email), that an empty loop sometimes       > takes longer. When I tried it today on my main PC, that is what I found.       >       > (Not entirely surprisingly; I find that all the time with x86 and x64:       > you make code simpler and shorter by removing instructions, and it       > becomes slower!)              Driving home last night I had a thought about that. I think       since I'm in un-optimized compiler mode, it doesn't align loop       targets, meaning the results may be skewed.              I'll rewrite the tests in assembly and link in a properly aligned       series of tests.              --       Rick C. Hodgin              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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