Re: [GHC] #932: Improve inlining
#932: Improve inlining --+- Reporter: simonpj | Owner: simonpj Type: task | Status: new Priority: normal| Milestone: _|_ Component: Compiler |Version: 6.4.2 Severity: normal| Resolution: Keywords:| Difficulty: Unknown Testcase: N/A | Architecture: Unknown Os: Unknown | --+- Changes (by simonpj): * milestone: 6.8 branch = _|_ Comment: There's probably something that can usefully be improved here, but let's wait until someone yells a bit more about it, with some program they care about. Sam? Simon -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/932#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #932: Improve inlining
#932: Improve inlining --+- Reporter: simonpj | Owner: simonpj Type: task | Status: new Priority: normal| Milestone: 6.8 Component: Compiler |Version: 6.4.2 Severity: normal| Resolution: Keywords:| Difficulty: Unknown Testcase: N/A | Architecture: Unknown Os: Unknown | --+- Changes (by simonmar): * milestone: 6.6.1 = 6.8 * owner: = simonpj -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/932 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #932: Improve inlining
#932: Improve inlining --+- Reporter: simonpj | Owner: Type: task | Status: new Priority: normal| Milestone: 6.6.1 Component: Compiler |Version: 6.4.2 Severity: normal| Resolution: Keywords:| Difficulty: Unknown Testcase: N/A | Architecture: Unknown Os: Unknown | --+- Changes (by samb): * cc: samb = samb simonpj -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/932 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #932: Improve inlining
#932: Improve inlining
--+-
Reporter: simonpj | Owner:
Type: task | Status: new
Priority: normal| Milestone: 6.6.1
Component: Compiler |Version: 6.4.2
Severity: normal| Resolution:
Keywords:| Difficulty: Unknown
Testcase: N/A | Architecture: Unknown
Os: Unknown |
--+-
Comment (by samb):
Hmm, that did not work right! Trac won't let people download the
attachment?
Anyway, with that last idea my patches no longer make anything in nofib
allocate more -- however they also don't make any of them allocate *less*
:-(. They do make a couple of 'em slower, though.
And then there are things like this:
{{{
module Test2 where
import GHC.Exts
foo = word2Int#
bar = foo
}}}
Which produces this output when built with {{{ghc/compiler/ghc-inplace
-ddump-inlinings -no-recomp -O2 -c Test2.hs}}}:
{{{
SimplBind [main:Test2.foo{v r7V} [lid]]
SimplBind [main:Test2.bar{v r7X} [lid]]
Considering inlining
main:Test2.foo{v r7V} [lid] active: False
arg infos []
interesting continuation False
is value: True
is cheap: True
guidance IF_ARGS 0 [] 1 0
ANSWER = NO
...
}}}
Which gives word2Int# a size of 1, even though it doesn't DO anything.
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/932
GHC http://www.haskell.org/ghc/
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Re: [GHC] #932: Improve inlining
#932: Improve inlining --+- Reporter: simonpj | Owner: Type: task | Status: new Priority: normal| Milestone: 6.6.1 Component: Compiler |Version: 6.4.2 Severity: normal| Resolution: Keywords:| Difficulty: Unknown Testcase: N/A | Architecture: Unknown Os: Unknown | --+- Changes (by samb): * cc: = samb Comment: Unless I am quite mistaken, this will not help unless the function actually has an argument discount for that argument? I did not observe this for *any* of the shift workers for the types based on Word# or Int#. (Which is the point of the patches I've made so far...) So I guess you'd need to do *both* things? Of course, I could easily be quite mistaken ;-). There doesn't appear to be any commentary on the Trac wiki about inlining at all. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/932 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
