[GHC] #16190: Speed up handling of large String literals

GHC ghc-devs at haskell.org
Mon Mar 4 18:51:02 UTC 2019


#16190: Speed up handling of large String literals
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        Reporter:  hsyl20            |                Owner:  (none)
            Type:  task              |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/143
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Comment (by Marge Bot <ben+marge-bot@…>):

 In [changeset:"1d9a1d9fb8fe0a1fea2c44c4246f102ff3e1f3a3/ghc" 1d9a1d9/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1d9a1d9fb8fe0a1fea2c44c4246f102ff3e1f3a3"
 NCG: fast compilation of very large strings (#16190)

 This patch adds an optimization into the NCG: for large strings
 (threshold configurable via -fbinary-blob-threshold=NNN flag), instead
 of printing `.asciz "..."` in the generated ASM source, we print
 `.incbin "tmpXXX.dat"` and we dump the contents of the string into a
 temporary "tmpXXX.dat" file.

 See the note for more details.
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16190#comment:13>
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