[cvs-nhc98] Hat: achieve a 30-40% speed-up in running traced programs.
Malcolm Wallace
malcolm@sparud.net
Sun, 25 Mar 2001 20:34:54 +0200 (CEST)
malcolm: Sun Mar 25 20:34:54 CEST 2001
Update of /usr/src/master/nhc/include
In directory hinken:/tmp/cvs-serv591/include
Modified Files:
Array.T.hi Char.T.hi Ix.T.hi List.T.hi Maybe.T.hi
NonStdTrace.T.hi Numeric.T.hi PackedString.T.hi Prelude.T.hi
PreludeBuiltin.T.hi Ratio.T.hi System.T.hi cinterface.h
Log Message:
Hat: achieve a 30-40% speed-up in running traced programs.
This improvement is mainly due to moving work from Haskell to C.
We were already storing certain triples of trace information
(file ptr, trustedness, hiddenness) as a C struct, but continuing
to use trivial access/construction functions in Haskell. Here, we
remove all uses of the triples to C, and use only higher-level calls
in Haskell.
As a biproduct, the change of type from data Trace to newtype Trace
must be rippled through all of the standard .T.hi files.