X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=docs%2Fusers_guide%2Fusing.xml;h=3ab73a1b3b1be1edd4108451078b6e5dd0caa3b6;hb=d7df1559b3f44603e78062e9eed5c13a453aa7f4;hp=a9ad52838e2fe6ebfbcf84149a3226c3ac891eb2;hpb=f8c30102cdc246af5720b3bc8f2211e352edda5f;p=ghc-hetmet.git
diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index a9ad528..3ab73a1 100644
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -848,6 +848,7 @@ ghc -c Foo.hs
+
@@ -914,6 +915,31 @@ ghc -c Foo.hs
+ :
+
+
+ implicit prelude, warning
+ Have the compiler warn if the Prelude is implicitly
+ imported. This happens unless either the Prelude module is
+ explicitly imported with an import ... Prelude ...
+ line, or this implicit import is disabled (either by
+ or a
+ LANGUAGE NoImplicitPrelude pragma).
+
+ Note that no warning is given for syntax that implicitly
+ refers to the Prelude, even if
+ would change whether it refers to the Prelude.
+ For example, no warning is given when
+ 368 means
+ Prelude.fromInteger (368::Prelude.Integer)
+ (where Prelude refers to the actual Prelude module,
+ regardless of the imports of the module being compiled).
+
+ This warning is off by default.
+
+
+
+ :
@@ -1034,7 +1060,7 @@ f foo = foo { x = 6 }
in the inadvertent cyclic definition let x = ... x
... in.
- Consequently, this option does
+ Consequently, this option
will complain about cyclic recursive
definitions.
@@ -1154,7 +1180,7 @@ f "2" = 2
the MR can give rise to unexpected behaviour, so it can be helpful
to have an explicit warning that it is being applied.
- This warning is on by default.
+ This warning is off by default.
@@ -1250,7 +1276,7 @@ f "2" = 2
Note that higher optimisation levels cause more
cross-module optimisation to be performed, which can have an
impact on how much of your program needs to be recompiled when
- you change something. This is one reaosn to stick to
+ you change something. This is one reason to stick to
no-optimisation when developing code.
@@ -1459,6 +1485,50 @@ f "2" = 2
+
+
+
+
+ Turn off the "state hack" whereby any lambda with a
+ State# token as argument is considered to be
+ single-entry, hence it is considered OK to inline things inside
+ it. This can improve performance of IO and ST monad code, but it
+ runs the risk of reducing sharing.
+
+
+
+
+
+
+
+
+
+ Tells GHC to omit all inessential information from the interface file
+ generated for the module being compiled (say M). This means that a module
+ importing M will see only the types of the functions that M exports, but not
+ their unfoldings, strictness info, etc. Hence, for example,
+ no function exported by M will be inlined
+ into an importing module. The benefit is that modules that import M will
+ need to be recompiled less often (only when M's exports change their type,
+ not when they change their implementation).
+
+
+
+
+
+
+
+
+
+
+ Tells GHC to ignore all inessential information when reading interface files.
+ That is, even if M.hi contains unfolding or strictness information
+ for a function, GHC will ignore that information.
+
+
+
+
+
:
strict constructor fields
@@ -1481,7 +1551,7 @@ f "2" = 2
-
+
@@ -1499,7 +1569,7 @@ f "2" = 2
- :
+ :
inlining, controllingunfolding, controlling
@@ -1525,7 +1595,7 @@ f "2" = 2
- :
+ inlining, controlling