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To run eprof for a compiler pass:
erlc +'{eprof,beam_asm}' file.erl
The name of the compiler pass is the name as printed when
'time' option is used. It is usually, but not always, the module
name for the compiler pass.
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When we compile from Core Erlang, do it with and without
Core Erlang optimizations to ensure that we are not dependent
on the optimizations always being run.
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Cover more code in v3_core.
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'asm' was deprecated in 18315c16, to be removed in 18.x.
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Add the mentioned test suites for *all* library and touched
non-library applications.
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erlc is wired to treat *.S files as assembler and build them as
compile:file(File, [from_asm]), but this is not documented. There's also
a documented compile:file/2 option called 'asm' (mapping to 'from_asm'),
but the wording discourages its use. All of this has been in place and
in use for a long time. Therefore, it should be supported officially.
To fix that, make the following changes:
* document erlc handling of *.core files
* un-document 'asm' and document 'from_asm' instead
* deprecate 'asm'
While at it, fix a minor typo in the test suite.
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* maint:
compiler: Conform returned errors to the documented format
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ErrorInfo is documented to be:
{ErrorLine,Module,ErrorDescriptor}
but for some errors with line numbers it would look like:
{Module,ErrorDescriptor}
Ensure that all ErrorInfo tuples have three elements. Use 'none'
instead of a line number:
{none,Module,ErrorDescriptor}
There already are errors that return 'none' when no line number is
available, but that convention was not documented. Mention it in the
documentation.
Also make sure that the compiler will not print 'none' as a line
number in error messages (if the 'report_errors' option is given) as
that looks stupid. That is, when attempting to compile a non-existing
module, the error message should be:
non-existing.erl: no such file or directory
and not:
non-existing.erl:none: no such file or directory
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Conflicts:
bootstrap/lib/stdlib/ebin/beam_lib.beam
lib/public_key/test/erl_make_certs.erl
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Since both the STDLIB and compiler applications turn warnings
into errors, we must stop using the old deprecated crypto functions.
While we are at it, generalize the format of the key tuple returned
by beam_lib:make_crypto_key/2 to facilitate introducing new crypto
methods in the future. Change the format to:
{Type,Key,IV,BlockSize}
where Type, Key, and IV are the first three arguments for either
crypto:block_encrypt4/ or crypto:block_decrypt/4, and BlockSize
is the block size for the crypto algorithm (it is needed to properly
pad the plaintext blocks before encryption).
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If a process trap exits, calling the compiler would leave an EXIT
message in the message queue of the calling process because the
compiler spawns a temporary work process. Eliminate the EXIT process
by monitoring the temporary process instead of linking to it.
Reported-by: Jeremy Heater
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Correct the forms_2 test case introduced in 2d785c07fbf9f533bf so
that it will work on Windows. As originally written, the test case
assumed that filename:absname("/foo/bar") would return "/foo/bar",
which is not true on Windows (typically, the result will be
"c:/foo/bar").
While at it, clean up indentation, the overlong line, and comments.
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Because of a copy-and-paste error in erlc.c, the -MP flag had the same
effect as -MG. As a workaround, you had to pass +makedep_phony to enable
the MP option. This patch makes -MP work as intended.
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This commit adds a source option to compile:forms() that
sets the source value returned by module_info(compile).
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Compiling the same source code with the same options may not produce
the same BEAM file because the compilation time is included in the
"CInf" chunk.
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As far as I know, the purpose of the compiler options included in
Mod:module_info(compile) has never been documented.
An educated guess is that they are there in case you want to
re-compile the module with the same options, and also to aid in
debugging when you need to know how a module was compiled.
In neither case is there any need to include options given in the
source itself in options included in Mod:module_info(compile).
Including those options will only waste memory.
Therefore, only include in the BEAM file the options that were
given to compile:file/2.
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Also update the r12 and r13 options so that they imply no_line_info.
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In 3d0f4a3085f11389e5b22d10f96f0cbf08c9337f (an update to conform
with common_test), in all test_lib:recompile(?MODULE) calls, ?MODULE
was changed to the actual name of the module. That would cause
test_lib:recompile/1 to compile the module with the incorrect
compiler options in cloned modules such as record_no_opt_SUITE,
causing worse coverage.
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* jp/dependencies_makefile:
Add dependencies Makefile generation to erlc(1) and compile(3)
Conflicts:
lib/compiler/test/compile_SUITE.erl
OTP-9065
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This is useful when a project is built with Makefiles and erlc(1)
instead of EMakefiles. Tracking dependencies by hand is error-prone and
it becomes painful when using external application headers like EUnit's
one.
A dependencies Makefile will look like this:
module.beam: module.erl \
/usr/local/lib/erlang/lib/eunit-2.1.4/include/eunit.hrl \
header.hrl
When included in the main Makefile, 'module' will be recompiled only
when needed.
GCC offers the same feature and new erlc(1) options are compatible with
it.
More informations at:
http://wiki.github.com/dumbbell/otp/dependencies-makefile
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* bg/opt-receive:
Test that gen_server:call/2,3 are fast even with a huge message queue
erts: Add tests for the receive optimization
Update primary bootstrap
erts: Implement recv_mark/1 and recv_set/1 for real
compiler tests: Cover the error handling code in beam_receive
compiler test: Test optimization of receive statements
Optimize selective receives in the presence of a large message queue
Introduce the new recv_mark/1 and recv_mark/1 instructions
Compile tests that communicate with R12 nodes with the r12 option
Move p_run/2 to test_lib
gen: Inline wait_resp_mon/2 to help the compiler optimize
OTP-8623 bg/opt-receive
reveive statements that can only read out a newly created reference are now
specially optimized so that it will execute in constant time regardless of
the number of messages in the receive queue for the process. That
optimization will benefit calls to gen_server:call(). (See gen:do_call/4
for an example of a receive statement that will be optimized.)
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It can be useful for other test suites.
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