[Gm2] latest cvs changes

[Gaius Mulley]

Hi,

here are the latest cvs changes:

  * gm2/gm2-lang.c:  comment out definition for LANG_HOOKS_GIMPLIFY_EXPR.
  * gm2/gm2-compiler/M2ALU.mod:  Convert top of stack to Integer type.
  * gm2/gm2-compiler/M2GenGCC.mod:  ensure that the global scope is in use in 
CodeEndFile,
    CodeStartDefFile, CodeStartModFile.  ConvertForComparison convert pointer 
types to
    ADDRESS.  Fix calls to BuildThrow to use a location initial parameter.
  * gm2/gm2-compiler/M2Range.mod:  (CodeWholeZero) convert const lit zero into 
the same
    type as, e.
  * gm2/gm2-gcc/m2block.c:  added DEBUGGING macro and debugging prints.
  * gm2/gm2-gcc/m2convert.c:  (m2convert_BuildConvert) added more steps to aid 
debugging.
  * gm2/gm2-gcc/m2convert.h:  (m2convert_BuildConvert) changed parameter names.
  * gm2/gm2-gcc/m2except.def:  (BuildThrow) added missing initial parameter.
  * gm2/gm2-gcc/m2expr.c:  (gm2/gm2-gcc/m2expr.c)  added conversion between
    pointer types for MINUS_EXPR.
  * gm2/gm2-gcc/m2statement.c:  (m2statement_BuildEndFunctionCode) call
    gm2_gimplify_function_node.
  * gm2/gm2-gcc/m2treelib.c:  (m2treelib_do_jump_if_bit) use m2expr_GetWordZero
    rather than m2expr_GetIntegerZero.
  * gm2/gm2-gcc/m2type.c:  (m2type_InitBaseTypes) call m2expr_init.

with these changes gm2 will now compile most of its base ISO and PIM
libraries.  It fails when compiling DynamicStrings.mod and any module
which uses SYSTEM.THROW (exceptions are still broken).  Also I suspect
any nested procedure will currently break - on the plus side many
modules now compile with 4.7.1 and the internals of gm2 are much cleaner
(much more rigorous type checking enforced internally - matching PIM and
ISO).

Here is a script which I've generated from my build on a x86_64 Debian
Wheezy system.


  #!/bin/bash

  mkdir -p GM2
  cd GM2/
  wget 
http://floppsie.comp.glam.ac.uk/download/c/gcc-4.7.1+gm2-cvs-latest.tar.gz
  tar zxf gcc-4.7.1+gm2-cvs-latest.tar.gz 
  sudo apt-get install gcc libgmp-dev libmpfr-dev 
  sudo apt-get install gcc libgmp-dev libmpc-dev
  sudo apt-get install flex
  sudo apt-get install libpth-dev
  sudo apt-get install make

  GCC=4.7.1
  mkdir build-${GCC}
  cd build-${GCC}
  CXXFLAGS=-g BOOT_CFLAGS=-g CFLAGS="-g -gdwarf-2" ../gcc-${GCC}/configure 
--prefix=$HOME/opt \
    --libexecdir=/usr/lib --enable-shared \
    --enable-threads=posix --enable-__cxa_atexit \
    --enable-clocale=gnu --enable-languages=c,c++,gm2,fortran \
    --disable-multilib --disable-bootstrap # --enable-checking=all

  if ! CXXFLAGS=-g BOOT_CFLAGS=-g CFLAGS="-g -gdwarf-2" time make ; then
       echo "make failed"
       exit 1
  fi



regards,
Gaius