- Cvs-nhc98 - Haskell.org

Fixed transformation of default methods.
by olaf＠sparud.net 26 Mar '01

26 Mar '01

olaf: Mon Mar 26 18:27:20 CEST 2001 Update of /usr/src/master/nhc/src/compiler98 In directory hinken:/tmp/cvs-serv4381/src/compiler98 Modified Files: DbgTrans.hs IntState.hs Rename.hs Log Message: Fixed transformation of default methods. A missing default method lead to a corrupted trace file and sometimes even a segmentation fault. The problem was that the call to `fatal' was not wrapped within an R. Furthermore the error message "No match in pattern." was rather misleading. Now transform default method like any other function definition. The error message which has been introduced by the renamer is transformed like a normal expression. Changed renamer so that this compiler introduced expression has no source positions. So the explicit call of error is visible in the trace, but the browser user cannot ask for the source position.

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Tentative fix to allow nhc98 to build itself again.
by malcolm＠sparud.net 26 Mar '01

26 Mar '01

malcolm: Mon Mar 26 13:23:49 CEST 2001 Update of /usr/src/master/nhc/src/prelude/IO In directory hinken:/tmp/cvs-serv3307 Modified Files: OpenFile.hs Log Message: Tentative fix to allow nhc98 to build itself again. We have been getting segfaults recently when nhc98 is built by itself. I think it is a problem with the newish implementation of openFile. The returned Addr was converted to a ForeignObj lazily - which probably meant that the ForeignObj was being finalised before it was actually placed into the program graph! This change puts the prim operation addrToForeignObj into the IO monad, to force immediate evaluation.

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hIsEOF does not have the same semantics as feof() in C.
by malcolm＠sparud.net 26 Mar '01

26 Mar '01

malcolm: Mon Mar 26 12:54:22 CEST 2001 Update of /usr/src/master/nhc/src/runtime/Builtin In directory hinken:/tmp/cvs-serv3208/src/runtime/Builtin Modified Files: cHIsEOF.c Log Message: hIsEOF does not have the same semantics as feof() in C. It appears that feof() does not truly test for end-of-file. The EOF marker must be set by a preceding read operation.

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Tidy up output column format of `hat-check -a' slightly.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 20:54:49 CEST 2001 Update of /usr/src/master/nhc/src/tracer/hat In directory hinken:/tmp/cvs-serv676 Modified Files: hat-check.c Log Message: Tidy up output column format of `hat-check -a' slightly.

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Hat: achieve a 30-40% speed-up in running traced programs.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 20:34:56 CEST 2001 Update of /usr/src/master/nhc/src/tracer/runtime In directory hinken:/tmp/cvs-serv591/src/tracer/runtime Modified Files: fileformat.c fileformat.h getconstr.c getconstr.h io.c numeric.c vector.c 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.

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Hat: achieve a 30-40% speed-up in running traced programs.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 20:34:54 CEST 2001 Update of /usr/src/master/nhc/src/prelude/PreludeDebug In directory hinken:/tmp/cvs-serv591/src/prelude/PreludeDebug Modified Files: HatArchive.hs Makefile PreludeDebug.hs 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.

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Hat: achieve a 30-40% speed-up in running traced programs.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

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.

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Hat: achieve a 30-40% speed-up in running traced programs.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 20:34:54 CEST 2001 Update of /usr/src/master/nhc/src/runtime/Kernel In directory hinken:/tmp/cvs-serv591/src/runtime/Kernel Modified Files: newbuiltin.c 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.

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Hat: use FFI for hGetChar (replaces hand-written primitive
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 20:25:14 CEST 2001 Update of /usr/src/master/nhc/src/prelude/IO In directory hinken:/tmp/cvs-serv567 Modified Files: HGetChar.hs Log Message: Hat: use FFI for hGetChar (replaces hand-written primitive).

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Remove need for a different compiler for tracing.
by malcolm＠sparud.net 25 Mar '01

25 Mar '01

malcolm: Sun Mar 25 19:52:18 CEST 2001 Update of /usr/src/master/nhc/src/compiler98 In directory hinken:/tmp/cvs-serv450/src/compiler98 Modified Files: FSLib.hs FixSyntax.hs Main.hs Makefile STGBuild.hs STGGcode.hs Log Message: Remove need for a different compiler for tracing. For a long time, we generated a second compiler called nhc98compT with only a few small differences from the ordinary compiler called nhc98comp. Some of the differences have now gone away, and the rest can either be incorporated directly into the ordinary compiler (where a pattern-match or test would only succeed for trace-transformed code anyway), or guarded by an extra test on the command-line flag -dbgtrans (where there might be a conflict with ordinary code).

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