[GHC] #3969: Poor performance of generated code on x86.

GHC cvs-ghc at haskell.org
Thu May 5 03:47:52 CEST 2011


#3969: Poor performance of generated code on x86.
--------------------------------------+-------------------------------------
  Reporter:  milan                    |          Owner:                          
      Type:  bug                      |         Status:  closed                  
  Priority:  normal                   |      Milestone:                          
 Component:  Compiler                 |        Version:  6.12.1                  
Resolution:  wontfix                  |       Keywords:  x86, runtime performance
  Testcase:                           |      Blockedby:                          
Difficulty:                           |             Os:  Unknown/Multiple        
  Blocking:                           |   Architecture:  x86                     
   Failure:  Runtime performance bug  |  
--------------------------------------+-------------------------------------

Comment(by dterei):

 I know this is closed but just thought I would add the results these days:

 {{{
 ghc -O2 -optlo-O3 -fllvm Hash c_hash.c
 }}}

 {{{
 Hash h  10: 0.29s | Hash c  10: 0.38s
 Hash h  50: 0.97s | Hash c  50: 1.02s
 Hash h 100: 1.94s | Hash h 100: 2.04s
 }}}

 I guess we could change this to fixed now instead of wontfix :).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3969#comment:2>
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