[Git][ghc/ghc][wip/andreask/inline_div] Always inline divInt and modInt in phase zero.

[Andreas Klebinger]

Andreas Klebinger pushed to branch wip/andreask/inline_div at Glasgow Haskell Compiler / GHC


Commits:
c77b9961 by Andreas Klebinger at 2020-04-17T12:44:13+02:00
Always inline divInt and modInt in phase zero.

This prevents the overhead of a function call for
operations which really only need to be a few instructions.

By always inlining them in phase zero we can:
* Match on them via rules in earlier phases.
* Can constant fold on them in phase zero by
  rules on their underlying primitives.

This fixes #18067

- - - - -


1 changed file:

- libraries/ghc-prim/GHC/Classes.hs


Changes:

=====================================
libraries/ghc-prim/GHC/Classes.hs
=====================================
@@ -545,8 +545,8 @@ not False               =  True
 -- put them
 
 -- These functions have built-in rules.
-{-# NOINLINE [0] divInt# #-}
-{-# NOINLINE [0] modInt# #-}
+{-# INLINE [0] divInt# #-}
+{-# INLINE [0] modInt# #-}
 divInt# :: Int# -> Int# -> Int#
 x# `divInt#` y#
         -- Be careful NOT to overflow if we do any additional arithmetic



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c77b99613a4e4e1ecb41ae4e98a15932d41ebb99

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c77b99613a4e4e1ecb41ae4e98a15932d41ebb99
You're receiving this email because of your account on gitlab.haskell.org.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/ghc-commits/attachments/20200417/a6c62bb0/attachment.html>