[Git][ghc/ghc][master] Remove outdated note

[Marge Bot]

 Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC


Commits:
ffc3da47 by Sylvain Henry at 2020-09-02T15:56:11-04:00
Remove outdated note

- - - - -


1 changed file:

- compiler/GHC/Builtin/Names.hs


Changes:

=====================================
compiler/GHC/Builtin/Names.hs
=====================================
@@ -116,35 +116,6 @@ known keys. See
 Note [One-tuples] (Wrinkle: Make boxed one-tuple names have known keys)
 in GHC.Builtin.Types.
 
-Note [The integer library]
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Clearly, we need to know the names of various definitions of the integer
-library, e.g. the type itself, `mkInteger` etc. But there are two possible
-implementations of the integer library:
-
- * integer-gmp (fast, but uses libgmp, which may not be available on all
-   targets and is GPL licensed)
- * integer-simple (slow, but pure Haskell and BSD-licensed)
-
-We want the compiler to work with either one. The way we achieve this is:
-
- * When compiling the integer-{gmp,simple} library, we pass
-     -this-unit-id  integer-wired-in
-   to GHC (see the cabal file libraries/integer-{gmp,simple}.
- * This way, GHC can use just this UnitID (see Module.integerUnitId) when
-   generating code, and the linker will succeed.
-
-Unfortuately, the abstraction is not complete: When using integer-gmp, we
-really want to use the S# constructor directly. This is controlled by
-the `integerLibrary` field of `DynFlags`: If it is IntegerGMP, we use
-this constructor directly (see  CorePrep.lookupIntegerSDataConName)
-
-When GHC reads the package data base, it (internally only) pretends it has UnitId
-`integer-wired-in` instead of the actual UnitId (which includes the version
-number); just like for `base` and other packages, as described in
-Note [Wired-in units] in GHC.Unit.Module. This is done in
-GHC.Unit.State.findWiredInUnits.
 -}
 
 {-# LANGUAGE CPP #-}



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ffc3da474bd6febf8a120ebd432ad69f92fe03e0

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ffc3da474bd6febf8a120ebd432ad69f92fe03e0
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/20200902/dc1459c4/attachment-0001.html>