code_info.m:
Bug fix: change generate_pre_commit and generate_commit so that
the values which need to be saved and restored are always pushed
onto the det stack, even in nondet predicates. The reason is
that if the committed goal fails, curfr is not valid, so we
can't restore the fields from the nondet stack.
(This way may well be more efficient anyway.)
disj_gen.m, ite_gen.m:
Handle the case when the current failure continuation is unknown
on entry to the disjunction or nondet if-then-else by creating
a new frame on the nondet stack. (Originally we just aborted
in this case; recently we "fixed" this, but it turned out that
the fix was not correct, for the same reason as the above-mentioned
bug in pre_commit/commit.
llds.m:
Add succfr/1 and prevfr/1 to the rval type in llds.m,
since they were needed by the above bug fixes.
(This caused dozens of changes elsewhere to handle the
new types.)
Also fix a trivial bug that I recently introduced which
prevented --mod-comments from working.
live_vars.m:
Fix bug in allocation of stack slots for nondet code.
(This is the one that caused the bug that ksiew and I found
when writing a calculator program.)
peephole.m:
Disable the succeed_discard() optimization, since it
causes incorrect code to be generated. It was replacing
modframe(do_fail) ... succeed() with
modframe(do_fail) ... succeed_discard() even when there were
instructions such as mkframe() in between.
modes.m, hlds.m:
When modechecking switches, record the binding of the switch variable
as we enter each case, so that we get the determinism analysis
right.
mercury_compile.pp:
Make sure that we set the exit status to be non-zero if we
find any errors.
typecheck.m, modes.m, undef_types.m, undef_modes.m:
Don't invoke type-checking if there are undefined types.
Don't invoke mode-checking if there are undefined modes.
This avoids the problem of the compiler aborting with an
internal error if there are undefined types/modes.
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_util.nl, float.nl, llds.nl, mercury_builtin.nl, opt_debug.nl,
parser.nl, polymorphism.nl, sp_lib.nl, string.nl, string.nu.nl,
type_util.nl, typecheck.nl, unify_gen.nl:
Implement floating point.
Makefile.common:
Remove `-include test.dep' line. Use Mmake.
int.nl:
Update a few of the comments.
io.nu.nl:
For Sicstus Prolog, if main/2 is not defined then enter the
debugger.
term.nl:
In term__create_var, use bit reversals rather than random numbers
to ensure that the binary trees remain balanced.
call_gen.nl:
For polymorphic unifications, generate a call to fatal_error().
code_gen.nl, hlds.nl, make_hlds.nl, modes.nl, unify_proc.nl:
Move the unify_request data structure from code_info to the HLDS,
and move the unify_request handling from code_gen.nl to modes.nl.
This is because we now generate HLDS code rather than LLDS code
for complicated unifications.
code_util.nl, hlds_out.nl:
Do some special name mangling for =/2.
float.nl, typecheck.nl, undef_types.nl, term.nl, hlds.nl:
Until we implement `float' properly, define it as an abstract type
in float.nl.
hlds.nl, make_hlds.nl:
Rename `local_pred, imported_pred, exported_pred' to just
`local, imported, exported' since they also apply to types, etc.,
not just to preds.
mercury_compile.pp, mercury_to_goedel.nl, prog_util.nl:
Replace to goedel__ prefixes in prog_util.nl with prog_util__.
std_util.nl:
Change the code for semidet_succeed to avoid determinism warning.
*.nl:
Rename globals__lookup*option as globals__io_lookup*option.
Create new globals__lookup*option predicates.
Fix up the option handling in the code generator.
hlds_out.nl:
Minor improvements to the output.
code_info.nl, type_util.nl:
Change make_type_id to fail rather than call error/1
if the type is not valid.
undef_types.nl:
Report invalid types.
mode_util.nl:
Add a new pred `type_constructors'.
modes.nl:
Detect determinism of deconstruction unifications properly,
using the type information.
Makefile.mercury:
Fix the definition of MERCC.
hlds.nl:
For each discriminated union type, store the tags for the
constructors for that type, and store whether
or not the type is an enumeration type.
make_hlds.nl, make_tags.nl:
Added a new file `make_tags.nl' which is caled from make_hlds.nl
to computes the above info.
type_util.nl:
In type_is_enumeration, use the flag stored in the HLDS rather
than recomputing it on demand.
undef_types.nl:
Minor change to match the changes in hlds.nl.
mercury_compile.nl:
Ensure that foo.err depends on foo.nl.
Dump the hlds before liveness analysis as well as after
compilation (this is probably just a temporary hack).
mercury_builtin.nl:
Use det_pred(...), semidet_pred(...), nondet_pred(...)
rather than call_pred(...) for the higher-order predicate modes.
prog_io.nl, io.nl, varset.nl, etc.
Add determinism annotations.
hlds.nl, make_hlds.nl, LOTS of other files:
Reorganize the way the predicate table works.
Make hlds.nl a bit more modular.
Change call/4 to call/5.
Remove all/2 from the hlds.
Changed pred_id to an integer.
Added pred_call_id which is similar to the old pred_id.
Makefile:
Add a rule for creating *.hlds_dump.
array.nl:
Fix determinism error.
det_analysis.nl:
Fix a bug in printing determinism warnings.
fix_errors.sed:
Modify this so it allows all the `inferred nondet' determinism
errors but none of the `inferred semidet' ones.
llds.nl:
Rename llds__pred_mode_id as llds__proc_id.
mode_errors.nl:
Finally got around to implementing Zoltan's suggestions
about the error messages from the mode analysis.
If an error occurs in a conjunction, only one error message
is printed out - the first error which doesn't relate to
a head unification.
modes.nl:
Handle X = f(X) properly. NB: determinism analysis and code
generation still get it wrong!
undef_modes, undef_insts:
I've broken the error message code, since it's not easy
to print pred_ids. I just changed it so that it didn't
print the pred_ids out. Should fix this properly at some stage...
