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The previous mechanism was based on the core file which
meant that for every module in the PLT, we had to fetch
its .beam file, retrieve Erlang AST, compile that down
to core, serialize it into a binary and then get its MD5.
In a project with stdlib, kernel, elixir and a small
application in the PLT, relying only on the .beam sped
up --check_plt from 10s to 0.8s.
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This commit removes the call to ets:safe_fixtable/2 introduced in
commit 9458495. ETS memory can now be reclaimed while merging PLTs.
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A missing call to ets:safe_fixtable/2 meant that information
was sometimes lost when merging PLT:s.
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Instead of two records, #plt{} with dict:s and #mini_plt{} with ETS
tables, one record is used for representing PLT:s in RAM.
The #mini_plt{} is the one now used throughout analyses, but it is
called #plt{}.
When writing the PLT to file, another record is used, #file_plt{} (as
before). When creating #file_plt{}, the #plt{} is deleted (it cannot
be used for further analyses).
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Avoid some ETS-lookups. Marginal speed-ups.
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The new Dbgi chunk returns data in the following format:
{debug_info_v1, Backend, Data}
This allows compilers to store the debug info in different
formats. In order to retrieve a particular format, for
instance, Erlang Abstract Format, one may invoke:
Backend:debug_info(erlang_v1, Module, Data, Opts)
Besides introducing the chunk above, this commit also:
* Changes beam_lib:chunk(Beam, [:abstract_code]) to
read from the new Dbgi chunk while keeping backwards
compatibility with old .beams
* Adds the {debug_info, {Backend, Data}} option to
compile:file/2 and friends that are stored in the
Dbgi chunk. This allows the debug info encryption
mechanism to work across compilers
* Improves dialyzer to work directly on Core Erlang,
allowing languages that do not have the Erlang
Abstract Format to be dialyzer as long as they emit
the new chunk and their backend implementation is
available
Backwards compatibility is kept across the board except
for those calling beam_lib:chunk(Beam, ["Abst"]), as the
old chunk is no longer available. Note however the "Abst"
chunk has always been optional.
Future OTP versions may remove parsing the "Abst" chunk
altogether from beam_lib once Erlang 19 and earlier is no
longer supported.
The current Dialyzer implementation still supports earlier
.beam files and such may also be removed in future versions.
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* maint:
tools: Use portable lookup of home directory
dialyzer, observer: Use portable lookup of home directory
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Use init:get_argument(home) to find the location of the home
directory. That will work on all platforms (including Windows).
Note that the run-time system will fail to start if HOME
(or the equivalent on Windows) is not set. Therefore, it can
be assumed that init:get_argument(home) will not fail.
ERL-161
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Compressing the signatures or the contract records would cost time.
The contract records are still held in two places (code server and
PLT) in many cases.
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The two tables for (record) types and exported types are no longer
kept in memory (by the PLT) when analyzing, which reduces memory
consumption.
A first step towards removing (or replacing) the #plt{} record.
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The -T option has not been working for a long time.
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The table used during translation of forms to types used to be a
dictionary of the type info (-type(), -opaque(), and -record()) for
all modules. Now it is reduced to the modules that are needed to
handle references to types in other modules.
The PLT:s type info is still kept on the heap.
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* maint:
dialyzer: Compact 'file' annotations in Core code
dialyzer: Try to reduce memory usage
dialyzer: Use less memory when translating contracts
dialyzer: Use maps instaed of dict
dialyzer: Use maps instead of dict for module contracts map
dialyzer: Compress a few more ETS tables
dialyzer: Optimize memory consumption
dialyzer: Reduce memory consumption during 'remote' phase
dialyzer: Update code for finding parallelism
compiler: Do not spawn process when dialyzing
dialyzer: Reduce ETS usage during the typesig phase
dialyzer: Optimize graph condensation
dialyzer: Do not send full PLTs as messages
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The mini PLT is extended to hold all data of the full PLT, and the
full PLT is restored when needed (for storing the PLT on file).
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If a behaviour module contains an non-exported function with the same name as
one of the behaviour's callbacks, the callback info was inadvertently deleted
from the PLT as the dialyzer_plt:delete_list/2 function was cleaning up the
callback table. This bug was reported by Brujo Benavides.
Fixes ERL-72 bug report.
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The types array(), dict(), digraph(), gb_set(), gb_tree(), queue(),
set(), and tid() have been deprecated. They will be removed in OTP 18.0.
Instead the types array:array(), dict:dict(), digraph:graph(),
gb_set:set(), gb_tree:tree(), queue:queue(), sets:set(), and ets:tid()
can be used. (Note: it has always been necessary to use ets:tid().)
It is allowed in OTP 17.0 to locally re-define the types array(), dict(),
and so on.
New types array:array/1, dict:dict/2, gb_sets:set/1, gb_trees:tree/2,
queue:queue/1, and sets:set/1 have been added.
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Only the info and contracts dicts were neccessary for success typing
inference and these have been converted to ETS tables.
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This new feature is able to take multiple PLTs, merge them during the
start of the analysis, and work from there. This works provided that
the PLTs do not have a module with the same name appearing in more
than one PLT.
The PLTs are created in the usual way:
dialyzer --build_plt --output_plt PLT_1 FILES_TO_INCLUDE
...
dialyzer --build_plt --output_plt PLT_N FILES_TO_INCLUDE
and then can be used in either of the following ways:
dialyzer FILES_TO_ANALYZE --plts PLT_1 ... PLT_N
or:
dialyzer --plts PLT_1 ... PLT_N -- FILES_TO_ANALYZE
(Note the -- delimiter in the second case)
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Bumped version number and wrote RELEASE_NOTES.
Included all changes described in release notes.
Some spec-related changes to some files in lib/hipe/cerl.
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* ks/hipe:
dialyzer: Fix system_limit exception in race analysis
syntax_tools: Add types and specs for most exported functions
syntax_tools: Support the --enable-native-libs configure option
syntax_tools: Remove $Id$ annotations
dialyzer: New version for the R13B04 release
hipe: Miscellaneous additions
typer: New version for the R13B04 release
Fix a HiPE compiler bug evaluating an expression that throws system_limit
OTP-8460 ks/hipe
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