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* Rewrite matching statements in ?when_option macro to form that silences
dialyzer's unmatched_return warnings
* Treat compiler warnings as errors when compiling files in main
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and correct the name of another, erroneously spelt, option in the process.
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Removed in f9cb80861f169743 when changed impl from C to Erlang.
But seems they are needed to keep dialyzer tests happy.
Also improved bif_SUITE:shadow_comments to include all exported
in module erlang, not just the "snifs".
...which detected that apply/2 was missing Shadowed comment as well.
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LLVM currently hard-codes these. Since it is desirable to be able to
change things like PCB layout without requiring a change to LLVM, we
export these as LLVM metadata, which can easily be used from LLVM to
make it independent of them.
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* margnus1/hipe/maps-is_key-opts/PR-1069/OTP-13625:
hipe: Add test suite for verifying optimisations
Added elimination of maps:is_key/2 calls to HiPE
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Seems like halt/2 should be a member of this club.
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just to make things simpler.
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* Added a suite opt_verify_SUITE.erl to HiPE that tests for the results
of optimisations, with a single testcase that checks that the
icode_call_elim optimisation pass does remove calls to maps:is_key/2
where sound and not otherwise.
* Made hipe_testsuite_driver only create explicitly listed suites.
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* Implemented removal of maps:is_key/2 calls of which the result is
known in a new pass during the typed phase, called
hipe_icode_call_elim.
* Added the option icode_call_elim that enables the
hipe_icode_call_elim pass, and made it default for o2.
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Named types, except those for the records in the header files, have been
moved from elf*_format.hrl to elf_format.erl.
Also:
* Use lists instead of element/2-indexed tuples for ELF section and
symbol tables.
* Enable +warn_export_vars for hipe/llvm/ subdirectory and fix warning.
* Extract duplicated code in hipe_llvm module into help function
pp_dereference_type/3.
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* kostis/dialyzer/opaque_type/OTP-13586/PR-1047:
Declare the erl_types:var_table() type as opaque
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This reverts commit bd64ad8e15d66e48b36dbe3584315dd5cfc8b59a.
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A bug in LLVM miscompiles x86 functions that have floats are spilled to
stack. We work around it by disabling (inlined) floats when using llvm
on x86. Once a LLVM version in which the bug is fixed is released, we
can make the workaround conditional depending on the version.
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Since 3.7, LLVM sometimes generates SSE constants in a special constant
section with the requisite alignment (".rodata.cst16"). This broke
hipe_llvm since it assumed that all constants that were linked from the
text section were constants generated by hipe_llvm.
As this is the first time alignments larger than 8 have been required,
some small changes were required to hipe_consttab and
hipe_bifs:alloc_data/2. Note that hipe_bifs:alloc_data/2 still assumes
that erl_alloc will provide the requisite alignment.
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This allows for much more robust interpretation of relocations, symbols
and sections in hipe_llvm_main, without the clunkiness of an abstract
interface between two internal modules that belong to the same subsystem
anyway.
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The elf_format module was written in such a way that some of the
customisation to ELF-32 vs ELF-64 was made at compile-time and some of
it at run-time. As such it was not actually possible to read 32-bit
files with a module compiled for 64-bit support, or vice versa.
As the run-time selection uses some process dictionary ugliness, it was
removed, shifting all the customisation to be compile-time.
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* kostis/hipe/add-bs_match-tests/PR-1044/OTP-13549:
Up the limit for the timetrap used in the HiPE testsuite
One more test suite for binary pattern matching
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and do the following changes:
in erl_types: export the type and an appropriate constructor for it
in dialyzer_contracts: perform all necessary code modifications to
fix all dialyzer warnings
Although no warnings are reported by dialyzer, it's quite possible that
these are not the only places where the opacity of the var_table() data
structure is violated. But I decided to leave these places for a better
version of dialyzer to discover...
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Without this change, one test (bs_utf) times out when run on some
very slow SUN/SPARC machine we still have around. Unfortunately,
this is the only such machine that we have access to these days.
Perhaps suprisingly, all the HiPE tests pass on SPARC, which is
nice to know that this backend still works, despite not having
been tested for more than one (almost two?) years now.
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Optimization: A few dictionaries are maps instead of dicts.
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Taken from the OTP test suites and changed accordingly for HiPE.
Used to be problematic in the tests that matched against a segment
of 'bad_size'. This was corrected in the BEAM compiler for OTP 19.
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A bug is fixed, but there are more problems.
Modify erl_types.erl like this:
-define(EXPAND_LIMIT, 500).
and bogus warnings are output (again).
Callbacks and specs are compared (subtype) in dialyzer_behaviour. If
they are expanded to different depths, then invalid warnings can be
generated.
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Opaque singleton keys have the unfortunate property, unlike any other
singleton type, to overlap with other singleton types that do not have
the same internal representation. Therefore, we must not keep opaque
singletons in the Pairs list in a map type.
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t_subtract/2 would break its postcondition by always returning the
underapproximation none() when given a variable on the right hand side.
This broke map type parsing, since it relied on t_subtract/2 to tell it
when map keys would shadow each other.
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Opaque keys in maps broke an assumption in
erl_types:mapmerge_otherv/3 (that the infinimum of a singleton type and
some other type would either be none() or that same singleton type),
causing a case_clause crash.
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* maps:from_list/1
* maps:get/2
* maps:is_key/2
* maps:merge/2
* maps:put/3
* maps:size/1
* maps:to_list/1
* maps:update/3
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The type of a map is represented as a three-tuple {Pairs, DefaultKey,
DefaultValue}. DefaultKey and DefaultValue are types. Pairs is a list of
three-tuples {Key, mandatory | optional, Value}, where Key and Value are
types. All types Key must be singleton, or "known at compile time," as
the EEP put it. Examples:
#{integer()=>list()} {[], integer(), list()}
#{a=>char(), b=>atom()} {[{a, optional, char()},
{b, optional, atom()}],
none(), none()}
map() {[], any(), any()}
A more formal description of the representation and its invariants can
be found in erl_types.erl
Special thanks to Daniel S. McCain (@dsmccain) that co-authored a very
early version of this with me back in April 2014, although only the
singleton type logic remains from that version.
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* henrik/update-copyrightyear:
update copyright-year
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