[GHC] #12765: Don't optimize coercions with -O0
GHC
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Tue Oct 25 21:02:22 UTC 2016
#12765: Don't optimize coercions with -O0
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Reporter: bgamari | Owner:
Type: task | Status: new
Priority: normal | Milestone: 8.2.1
Component: Compiler | Version: 8.0.1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Compile-time | Unknown/Multiple
performance bug | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by bgamari):
I'm dropping a ticket here since I'm no longer convinced that this is
worthwhile. Unfortunately this would require a significant amount of
plumbing of the optimization level through a bunch of pure simplification
functions to make this happen. Moreover, even if we forego the coercion
simplification pass in `simpleOptPgm`, we still do run the simplifier even
with `-O0`.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12765#comment:1>
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