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Re: RFC: New diff-delta.c implementation

From
GBGeert Bosch <bosch@adacore.com>
Date
Apr 24, 2006, 18:27 UTC
Message-ID
<EC4542D3-2C18-44D4-8FDB-86918054CA9B@adacore.com>
In-Reply-To
<Pine.LNX.4.64.0604241123490.18520@localhost.localdomain>
On Apr 24, 2006, at 11:57, Nicolas Pitre wrote:
>> As a compiler writer, I am more than aware of this.
>> Your change results in a 70% slowdown on PowerPC.
>
> Huh!?

2.5s instead of 1.5s comparing gcc-2.95.1.tar against gcc-2.95.2.tar. Byte loads are relatively expensive on this platform. I'll put the word loads back in and make sure they don't slow things down on x86.

   -Geert
Previous: Geert BoschNext: Rutger Nijlunsing
Message 24 of 32 in “RFC: New diff-delta.c implementation”
  1. Geert BoschApr 21, 2006
  2. Nicolas PitreApr 22, 2006
  3. Geert BoschApr 22, 2006
  4. Junio C HamanoApr 22, 2006
  5. Geert BoschApr 22, 2006
  6. Nicolas PitreApr 22, 2006
  7. Geert BoschApr 22, 2006
  8. Junio C HamanoApr 22, 2006
  9. Geert BoschApr 22, 2006
  10. Junio C HamanoApr 22, 2006
  11. Nicolas PitreApr 22, 2006
  12. Geert BoschApr 22, 2006
  13. Junio C HamanoApr 22, 2006
  14. Nicolas PitreApr 22, 2006
  15. Davide LibenziApr 22, 2006
  16. Geert BoschApr 22, 2006
  17. Rene ScharfeApr 22, 2006
  18. Geert BoschApr 24, 2006
  19. Nicolas PitreApr 24, 2006
  20. Geert BoschApr 24, 2006
  21. Nicolas PitreApr 24, 2006
  22. Geert BoschApr 24, 2006
  23. Geert BoschApr 24, 2006
  24. Geert BoschApr 24, 2006
  25. Rutger NijlunsingApr 24, 2006
  26. Petr BaudisApr 24, 2006
  27. Geert BoschApr 24, 2006
  28. Rene ScharfeApr 25, 2006
  29. Davide LibenziApr 22, 2006
  30. Geert BoschApr 23, 2006
  31. Davide LibenziApr 24, 2006
  32. Geert BoschApr 24, 2006

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