Branches: main
library/version_array.m:
Implement version arrays for Java. This is a straightforward
translation of the C code.
library/version_hash_table.m:
Add a cast predicate implementation for Java.
Branches: main
Make version_array.set make a new array if it's not updating the latest version
of an array. This avoids unexpected bad performance, where the version array
essentially turns into a linked list with an array at the end, if the user
happens to go back to an older version of an array without an explicit
rewind/copy.
library/version_array.m:
As above.
compiler/make.dependencies.m:
Use size doubling when resizing version arrays.
Branches: main
Replace the implementations of (version) hash tables by separate chaining hash
tables. The old open addressing scheme was broken in the presence of deletes.
Fixes bug #68.
library/hash_table.m:
library/version_hash_table.m:
As above.
We no longer use double hashing in case of a hash collision, so hash
predicates only need to return one value now.
Add fold with predicate arguments.
library/array.m:
Add array.foldl for a predicate argument.
Add array.foldl2 with a unique state pair.
library/version_array.m:
Add version_array.foldl for a predicate argument.
compiler/make.m:
compiler/make.program_target.m:
compiler/make.util.m:
library/robdd.m:
Conform to change in hashing predicates.
deep_profiler/dense_bitset.m:
Add module qualifier to avoid ambiguity.
tests/hard_coded/Mmakefile:
tests/hard_coded/hash_table_delete.exp:
tests/hard_coded/hash_table_delete.m:
tests/hard_coded/hash_table_test.exp:
tests/hard_coded/hash_table_test.m:
tests/hard_coded/version_hash_table_delete.exp:
tests/hard_coded/version_hash_table_delete.m:
tests/hard_coded/version_hash_table_test2.exp:
tests/hard_coded/version_hash_table_test2.m:
Add new test cases.
tests/hard_coded/hash_bug.m:
tests/hard_coded/hash_init_bug.m:
tests/hard_coded/version_hash_table_test.m:
Conform to change in hashing predicates.
NEWS:
Document additions.
Estimated hours taken: 0.5
Branches: main
library/construct.m:
library/dir.m:
library/io.m:
library/store.m:
library/string.m:
library/term_size_prof_builtin.m:
library/thread.m:
library/version_array.m:
Add `may_not_duplicate' attributes on some "C" foreign_procs to prevent
them being written to `.opt' files.
It works around a problem with opt-exporting `thread.spawn' (which
happens to be not worth opt-exporting).
Estimated hours taken: 20
Branches: main
Add a new compiler option. --inform-ite-instead-of-switch. If this is enabled,
the compiler will generate informational messages about if-then-elses that
it thinks should be converted to switches for the sake of program reliability.
Act on the output generated by this option.
compiler/simplify.m:
Implement the new option.
Fix an old bug that could cause us to generate warnings about code
that was OK in one duplicated copy but not in another (where a switch
arm's code is duplicated due to the case being selected for more than
one cons_id).
compiler/options.m:
Add the new option.
Add a way to test for the bug fix in simplify.
doc/user_guide.texi:
Document the new option.
NEWS:
Mention the new option.
library/*.m:
mdbcomp/*.m:
browser/*.m:
compiler/*.m:
deep_profiler/*.m:
Convert if-then-elses to switches at most of the sites suggested by the
new option. At the remaining sites, switching to switches would have
nontrivial downsides. This typically happens with the switched-on type
has many functors, and we treat one or two specially (e.g. cons/2 in
the cons_id type).
Perform misc cleanups in the vicinity of the if-then-else to switch
conversions.
In a few cases, improve the error messages generated.
compiler/accumulator.m:
compiler/hlds_goal.m:
(Rename and) move insts for particular kinds of goal from
accumulator.m to hlds_goal.m, to allow them to be used in other
modules. Using these insts allowed us to eliminate some if-then-elses
entirely.
compiler/exprn_aux.m:
Instead of fixing some if-then-elses, delete the predicates containing
them, since they aren't used, and (as pointed out by the new option)
would need considerable other fixing if they were ever needed again.
compiler/lp_rational.m:
Add prefixes to the names of the function symbols on some types,
since without those prefixes, it was hard to figure out what type
the switch corresponding to an old if-then-else was switching on.
tests/invalid/reserve_tag.err_exp:
Expect a new, improved error message.
Estimated hours taken: 0.5
Branches: main
library/version_array.m:
Fix a bug which caused negative indices to be allowed
when updating a version_array.
tests/hard_coded/version_array_test.{m,exp}:
Add test cases.
Estimated hours taken: 80
Branches: main
Improvements for bitmap.m, to make it useable as a general container
for binary data.
library/bitmap.m:
runtime/mercury_bitmap.c:
runtime/mercury_bitmap.h:
Specialize the representation of bitmaps to an array of unsigned
bytes defined as a foreign type.
This is better than building on top of array(int) because it:
- is better for interfacing with foreign code
- has a more sensible machine-independent comparison order
(same as array(bool))
- avoids storing the size twice
- has more efficient copying, unification, comparison and tabling
(although we should probably specialize the handling of array(int)
and isomorphic types as well)
- uses GC_MALLOC_ATOMIC to avoid problems with bit patterns that look
like pointers (although we should do that for array(int) as well)
XXX The code for the Java and IL backends is untested.
Building the library in grade Java with Sun JDK 1.6 failed (but
at least passed error checking), and I don't have access to a
copy of MSVS.NET. The foreign code that needs to be tested is
trivial.
Add fields `bit', `bits' and `byte' to get/set a single bit,
multiple bits (from an int) or an 8 bit byte.
Add functions for converting bitmaps to hex strings and back,
for use by stream.string_writer.write and deconstruct.functor/4.
bitmap.intersect was buggy in the case where the input bitmaps
had a different size. Given that bitmaps are implemented with
a fixed domain (lookups out of range throw an exception), it
makes more sense to throw an exception in that case anyway,
so all of the set operations do that now.
The difference operation actually performed xor. Fix it and
add an xor function.
library/version_bitmap.m:
This hasn't been fully updated to be the same as bitmap.m.
The payoff would be much less because foreign code can't
really do anything with version_bitmaps.
Add a `bit' field.
Deprecate the `get/2' function in favour of the `bit' field.
Fix the union, difference, intersection and xor functions
as for bitmap.m.
Fix comparison of version_arrays so that it uses the same
method as array.m: compare size then elements in order.
The old code found version_arrays to be equal if one was
a suffix of the other.
library/char.m:
Add predicates for converting between hex digits and integers.
library/io.m:
library/stream.string_writer.m:
library/term.m:
Read and write bitmaps.
runtime/mercury_type_info.h:
runtime/mercury_deep_copy_body.h:
runtime/mercury_mcpp.h:
runtime/mercury_table_type_body.h:
runtime/mercury_tabling_macros.h:
runtime/mercury_unify_compare_body.h:
runtime/mercury_construct.c:
runtime/mercury_deconstruct.c:
runtime/mercury_term_size.c:
runtime/mercury_string.h:
library/construct.m:
library/deconstruct.m
compiler/prog_type.m:
compiler/mlds_to_gcc.m:
compiler/rtti.m:
Add a MR_TypeCtorRep for bitmaps, and handle it in the library
and runtinme.
library/Mercury.options:
Compile bitmap.m with `--no-warn-insts-without-matching-type'.
runtime/mercury_type_info.h:
Bump MR_RTTI_VERSION.
NEWS:
Document the changes.
tests/hard_coded/Mmakefile:
tests/hard_coded/bitmap_test.m:
tests/hard_coded/bitmap_simple.m:
tests/hard_coded/bitmap_tester.m:
tests/hard_coded/bitmap_test.exp:
tests/tabling/Mmakefile:
tests/tabling/expand_bitmap.m:
tests/tabling/expand_bitmap.exp:
tests/hard_coded/version_array_test.m:
tests/hard_coded/version_array_test.exp:
Test cases.
Estimated hours taken: 12
Branches: main
compiler/use_local_vars.m:
Extend this optimization to handle temporaries being both defined in
and used by foreign_proc_code instructions. This should eliminate
unnecessary accesses to the MR_fake_reg array, and thus speed up
programs that use foreign code a lot, including typeclass- and
tabling-intensive programs, since those features are implemented using
inline foreign code. I/O intensive should also benefit, but not much,
since the cost of the I/O itself overwhelms the cost of the
MR_fake_reg accesses.
Group together the LLDS instructions that are handled similarly.
Factor out some common code.
compiler/opt_util.m:
Allow for the fact that foreign_proc_codes can now refer to
temporaries.
compiler/opt_debug.m:
Print more useful information about foreign_proc_code components.
compiler/prog_data.m:
Rename the types and function symbols of the recently added
foreign_proc attributes to avoid clashing with the keywords
representing them in source code.
Add a new foreign_proc attribute, proc_may_duplicate that governs
whether the body of foreign code is allowed to be duplicated.
compiler/table_gen.m:
Include does_not_affect_liveness among the annotations for the
foreign_proc calls generated by this module. Some of these procedures
affect memory beyond their arguments, but that memory is in tables,
not in unlisted registers.
Allow some of the smaller code fragments generated by this module
to be duplicated.
compiler/inlining.m:
Respect the may_not_duplicate foreign_proc attribute.
compiler/pragma_c_gen.m:
Transmit any annotations about liveness from the HLDS to the LLDS,
since without does_not_affect_liveness annotations use_local_vars.m
cannot optimize foreign_proc_codes.
Transmit any annotations about may_duplicate from the HLDS to the LLDS,
since with them jumpopt can do a better job.
compiler/llds.m:
Use the new foreign_proc attribute instead of a boolean to represent
whether a foreign code fragment may be duplicated.
compiler/simplify.m:
Generate an error message if a may_duplicate or may_not_duplicate
attribute on a foreign_proc conflicts with a no_inline or inline pragma
(respectively) on the predicate it belongs to.
compiler/hlds_pred.m:
Fix some comment rot.
compiler/jumpopt.m:
compiler/livemap.m:
compiler/proc_gen.m:
compiler/trace_gen.m:
Conform to the changes above.
doc/reference_manual.texi:
Document the new foreign_proc attribute.
library/array.m:
library/builtin.m:
library/char.m:
library/dir.m:
library/float.m:
library/int.m:
library/io.m:
library/lexer.m:
library/math.m:
library/private_builtin.m:
library/string.m:
library/version_array.m:
Add does_not_affect_liveness annotations to the C foreign_procs that
deserve them.
configure.in:
Require the installed compiler to support does_not_affect_liveness.
tests/invalid/test_may_duplicate.{m,err_exp}:
Add a new test case to test the error checking code in simplify.m.
tests/invalid/Mmakefile:
Enable the new test case.
Estimated hours taken: 0.5
Branches: main
Rearrange the version array code in order to improve inlining
opportunities.
library/version_array.m:
Shift some of the code from the foreign_code pragma into the
foreign_procs. The rationale for doing this is that it gives the
compiler the option of inlining the code across module boundaries,
something that it cannot do with code in foreign code pragma.
Fix some formatting.
library/version_bitmap.m:
Fix some formatting.
Estimated hours taken: 0.2
Branches: main, release
library/*.m:
Improve the library reference manual by formatting the beginning of
library modules consistently.
library/integer.m:
Fix some bad indentation.
Estimated hours taken: 0.5
Branches: main
library/*.m:
Annotate foreign_procs with trail usage information throughout most of
the standard library.
Fix an out of date comment in string.m.
Fix some minor formatting problems.
Estimated hours taken: 0.5
Branches: main
library/version_array.m:
Clean up the format of the foreign code used in this module.
Convert it to four-space indentation to reduce the number of
bad line breaks.
Estimated hours taken: 20
Branches: main
Improve the termination analyser's handling of user-defined
special predicates.
Currently termination analysis assumes that all calls
to special predicates terminate. For those that are
user-defined this is not necessarily true.
This diff adds a new pass to the compiler that is run after
the main termination analysis pass. It checks any user-defined
special predicates and emits a warning if their termination
can not be proved.
Add a new option, `--no-warn-non-term-special-preds' that
disables this warning. The warning is only emitted when
termination analysis is enabled. The new option has
no effect if termination analysis is not enabled.
compiler/post_term_analysis.m:
New file. Add an additional pass that runs after the main
termination analysis and makes use of the information obtained
then to perform further semantic checks and optimizations.
compiler/termination.m:
Run the new pass after the main analysis.
Update the comment about the termination analyser doing the
wrong thing for user-defined special predicates.
compiler/options.m:
Parse the new option.
Update the special handler for the inhibit_warning
option so that it handles `--warn-table-with-inline'
and the new option correctly.
Fix some typos.
compiler/transform_hlds.m:
Include the new module.
compiler/notes/compiler_design.html:
Mention the new module.
doc/user_guide.texi:
Document the new option.
Fix some typos: s/occured/occurred/,
s/interative/interactive/, s/exlained/explained/
and /currect/current/
library/array.m:
library/version_array.m:
Add pragma terminates declarations to the user-defined
equality and comparison predicates for the array/1
and version_array/1 types. The termination analyser
cannot (yet) prove termination in these cases because
it cannot reason about iteration over arrays.
tests/warnings/Mercury.options:
tests/warnings/Mmakefile:
tests/warnings/warn_non_term_user_special.m:
tests/warnings/warn_non_term_user_special.exp:
Test the new option.
Estimated hours taken: 2
Branches: main
Added a test case for version_array.m and fixed a few bugs.
library/version_array.m:
Bug in version_array.rewind fixed.
tests/hard_coded/Mmakefile:
tests/hard_coded/version_array_test.m:
tests/hard_coded/version_array_test.exp:
Test case added.
Estimated hours taken: 0.5
Branches: main
Some minor fixes for the version types that Ralph
has added to the standard library.
compiler/modules.m:
Add the version type modules to the list of standard
library modules.
library/version_array.m:
Provided a Mercury definition of the type version_array(T)
so that this module (and the library) compile in the java
and il grades. (XXX I haven't checked the latter).
Estimated hours taken: 60
Branches: main
Add version types to the standard library.
NEWS:
Report the new additions.
library/library.m:
Include the new modules in the standard library.
library/version_array.m:
library/version_array2d.m:
library/version_bitmap.m:
library/version_hash_table.m:
library/version_store.m:
library/version_types.m:
Added.
