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diff --git a/docs/users_guide/debugging.xml b/docs/users_guide/debugging.xml
index 4ab4379..9c48f7d 100644
--- a/docs/users_guide/debugging.xml
+++ b/docs/users_guide/debugging.xml
@@ -24,8 +24,9 @@
a short form…). You can get all of these at once
(lots of output) by using
, or most of them with
- . Some of the most useful ones
- are:
+ . You can prevent them from clogging up
+ your standard output by passing .
+ Some of the most useful ones are:
@@ -120,8 +121,42 @@
- dumps all rewrite rules (including those generated
- by the specialisation pass)
+ dumps all rewrite rules specified in this module;
+ see .
+
+
+
+
+
+
+ :
+
+
+
+ dumps the names of all rules that fired in this module
+
+
+
+
+
+ :
+
+
+
+ dumps detailed information about all rules that fired in
+ this module
+
+
+
+
+
+
+ :
+
+
+
+ dumps the output of the vectoriser.
+
@@ -177,8 +212,8 @@
- :
-
+ :
+ worker/wrapper split output
@@ -280,14 +315,25 @@
+ :
+
+
+
+ Show the output of each run of the simplifier. Used when even
+ doesn't cut it.
+
+
+
+
+
:
Show the output of each iteration
of the simplifier (each run of the simplifier has a maximum
- number of iterations, normally 4). Used when even
- doesn't cut it.
+ number of iterations, normally 4). This outputs even more information
+ than .
@@ -316,14 +362,25 @@
-
+
-
- Make the type checker be *real* chatty about what it is
- upto.
-
+
+ Make the type checker be *real* chatty about what it is
+ upto.
+
+
+
+
+
+
+
+
+
+ Make the vectoriser be *real* chatty about what it is
+ upto.
+
@@ -363,7 +420,7 @@
of output!) So: when we're really desperate:
-% ghc -noC -O -ddump-simpl -dverbose-simpl -dcore-lint Foo.hs
+% ghc -noC -O -ddump-simpl -dverbose-core2core -dcore-lint Foo.hs
@@ -381,6 +438,17 @@
+
+
+
+
+ Print a one-line summary of the size of the Core program
+ at the end of the optimisation pipeline.
+
+
+
+
+
@@ -409,7 +477,15 @@
style.
+
+
+
+
+ Formatting dumps
+ formatting dumps
+
+
@@ -425,12 +501,129 @@
-
-
+
+
+
+
+ Set the width of debugging output. Use this if your code is wrapping too much.
+ For example: .
+
+
+
+
+
+
+
- Have the renamer report what imports does not
- contribute.
+ Print single alternative case expressions as though they were strict
+ let expressions. This is helpful when your code does a lot of unboxing.
+
+
+
+
+
+
+
+
+
+ Suppress any unsolicited debugging output. When GHC
+ has been built with the DEBUG option it
+ occasionally emits debug output of interest to developers.
+ The extra output can confuse the testing framework and
+ cause bogus test failures, so this flag is provided to
+ turn it off.
+
+
+
+
+
+
+
+ Suppressing unwanted information
+
+ suppression
+
+ Core dumps contain a large amount of information. Depending on what you are doing, not all of it will be useful.
+ Use these flags to suppress the parts that you are not interested in.
+
+
+
+
+
+
+
+
+ Suppress everything that can be suppressed, except for unique ids as this often
+ makes the printout ambiguous. If you just want to see the overall structure of
+ the code, then start here.
+
+
+
+
+
+
+
+
+
+ Suppress the printing of uniques. This may make
+ the printout ambiguous (e.g. unclear where an occurrence of 'x' is bound), but
+ it makes the output of two compiler runs have many fewer gratuitous differences,
+ so you can realistically apply diff. Once diff
+ has shown you where to look, you can try again without
+
+
+
+
+
+
+
+
+
+ Suppress extended information about identifiers where they are bound. This includes
+ strictness information and inliner templates. Using this flag can cut the size
+ of the core dump in half, due to the lack of inliner templates
+
+
+
+
+
+
+
+
+
+ Suppress the printing of module qualification prefixes.
+ This is the Data.List in Data.List.length.
+
+
+
+
+
+
+
+
+
+ Suppress the printing of type signatures.
+
+
+
+
+
+
+
+
+
+ Suppress the printing of type applications.
+
+
+
+
+
+
+
+
+
+ Suppress the printing of type coercions.
@@ -601,28 +794,15 @@ Main.skip2{-r1L6-} =
of platform-specific code that needs to be written in order to get
unregisterised compilation going is usually fairly small.
-
-
-
- :
-
-
-
- Compile via vanilla ANSI C only, turning off
- platform-specific optimisations. NOTE: in order to use
- , you need to have a set of libraries
- (including the RTS) built for unregisterised compilation.
- This amounts to building GHC with way "u" enabled.
-
-
-
+ Unregisterised compilation cannot be selected at
+ compile-time; you have to build GHC with the appropriate options
+ set. Consult the GHC Building Guide for details.