code*.m & *gen.m:
Implement an improved method of handling negated contexts.
The new method avoids saving things onto the stack before
an if-then-else or negation if it can.
Also, fix the implementation of nondet if-then-else so that
it does the soft cut properly.
code_exprn.m:
Fix a bug that was causing the code generator to loose
track of how many references there are to a register.
The bug was what caused incorrect results for one of
Bart's programs.
compiler/*:
Add copyright messages.
Change all occurences of *.nl in comments to *.m.
compiler/mercury_compile.pp:
Change the output to the .dep files to use *.m rather than *.nl.
(NOTE: this means that `mmake' will not work any more if you
call your files *.nl!!!)
code_exprn.m
code_info.m:
Fix an overly conservative sanity check.
mercury_compile.pp
typecheck.m:
Fix type errors due to the changed implementation of map.
Possibly these bits of code should be removed or something
so that map is properly abstract.
exprn_aux.nl:
a new module for manipulating rvals and lvals.
code_exprn.nl:
the new bottom level of the new code generator. This replaces
a large chunk of code_info.
*code* & *gen*:
various small changes to use the new bottom level of the
code generator.
