[GHC] #8256: adding locality levels to prefetch# and friends

[GHC]

#8256: adding locality levels to prefetch# and friends
-------------------------------------+------------------------------------
        Reporter:  carter            |            Owner:  carter
            Type:  task              |           Status:  patch
        Priority:  normal            |        Milestone:  7.8.1
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  #8252 ,#8107
-------------------------------------+------------------------------------

Comment (by carter):

 the current patch is correct except that i'm not pretty printing the
 prefetch asm correctly.

 {{{

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:25:0:
     suffix or operands invalid for `prefetchnta'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:48:0:
     suffix or operands invalid for `prefetchnta'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:70:0:
     suffix or operands invalid for `prefetchnta'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:93:0:
     no such instruction: `prefetch2 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:116:0:
     no such instruction: `prefetch2 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:138:0:
     no such instruction: `prefetch2 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:161:0:
     no such instruction: `prefetch1 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:184:0:
     no such instruction: `prefetch1 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:206:0:
     no such instruction: `prefetch1 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:229:0:
     no such instruction: `prefetch0 %rax'

 /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc20629_0/ghc20629_2.s:252:0:
     no such instruction: `prefetch0 %rax'

 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8256#comment:16>
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