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On my Mac Pro with 8 cores, this change make self_compile/1 more
than twice as fast, and self_compile_old_inliner/1 more than 4 times
faster.
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In the self compilation test cases, the compiler compiles itself
and runs the newly compiled version on a slave node. Having the
cover server starting on the slave node defeats the purpose of
the test, since it will load the SAME cover-compiled code on the
slave node. (It will also be slower, but will not improve coverage
since it compiles the same source files again.)
Use a shielded node to prevent the cover server from getting
started on the slave node.
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We probably don't gain anything by using more processes than available
schedulers. Also, if 'cover' is being run, using more than one process
may make it slower, so we will be very conservative and use only one
process in that case.
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This test suite has been superseded by other test suites (e.g.
guard_SUITE). Removing it does not decrease the coverage.
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* bjorn/compiler/match-fail/OTP-9842:
Add the beam_except pass to optimize exceptions
Eliminate the match_fail primop in v3_kernel and later passes
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In order to save space, rewrite suitable calls to erlang:error/{1,2}
to special BEAM instructions.
This code is probably longer than the code taken out of v3_life and
v3_codegen in the previous commit, but it is much easier to
understand and maintain since the BEAM assembler format is better
understood than the v3_life format.
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In the v3_life pass, it is assumed that a 'match_fail' primop
only occur at the top-level and at the end of a function.
But this code:
do_split_cases(A) ->
case A of
x ->
Z = dummy1;
_ ->
Z = dummy2,
a=b
end,
Z.
will be optimized by sys_core_fold to the following code:
'split_cases'/1 =
fun (_cor0) ->
let <_cor7,Z> =
case _cor0 of
<'x'> when 'true' ->
< 'dummy1','dummy1' >
<_cor6> when 'true' ->
%% Here follows a 'match_fail' primop inside
%% multiple return values:
< primop 'match_fail'({'badmatch','b'}),'dummy2' >
end
in
Z
moving the 'match_fail' primop into a "values" construction.
In the future, we would like to get rid of the v3_life pass (it is
there for historical reasons), so in the mean-time we prefer to not
add more code to it by generalizing the handling of 'match_fail'.
Since the 'match_fail' primop can be simulated by erlang:error/{1,2},
the simplest solution is to translate 'match_fail' to a call to
erlang:error/{1,2} in v3_kernel and remove the handling of
'match_fail' in v3_life and v3_codegen.
It is tempting to get rid of 'match_fail' also in the Core Erlang
format, but there are two issues:
- Removing the support for 'match_fail' completely may break tools
that generate Core Erlang code. We should not do that in a minor
release.
- There is no easy way to generate a 'function_clause' exception
that will remain correct if it will be inlined into another
function. (Calling "erlang:error(function_clause, Args)" is
fine only if it is not inlined into another function.) A good
solution probably involves introducing new instructions, which
is better done in a major release.
Noticed-by: Håkan Matsson
Minimized-test-case-by: Erik Søe Sørensen
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* lukas/docfixes/OTP-9850:
Fix some broken links in documentation
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Conflicts:
erts/vsn.mk
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* rickard/no-smp-dev-poll-bug/OTP-9844:
Include wakeup pipe in /dev/poll poll-set also on non-SMP
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* rickard/lwsync/OTP-9843:
Fix lwsync instruction feature test
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A feature test for the lwsync instruction performed on PowerPC
hardware at runtime system startup got into an eternal loop if
the instruction was not supported. This bug was introduced in
erts-5.9/OTP-R15B.
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I/O events could potentially be delayed for ever when enabling
kernel-poll on a non-SMP runtime system executing on Solaris. When
also combined with async-threads the runtime system hung before
completing the boot phase. This bug was introduced in
erts-5.9/OTP-R15B.
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* raimo/opu-fixes:
inet_res_SUITE: Go back to old way to kill test name server
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* hb/erl_docgen/fix_links/OTP-9832:
Generate links in C libraries correctly
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* siri/sasl/check-config-in-tar/OTP-9539:
Check that sys.config and relup have valid content when added to tar
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* siri/sasl/require-kernel-start/OTP-9652:
Reject systools:make_script if kernel and stdlib are not permanent in .rel
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* siri/stdlib/delete-temp-childspec-on-ignore/OTP-9782:
Don't save child spec for temporary child if child's start func returns ignore
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systools:make_tar now does a minor check of the content of sys.config
and relup before adding them to the tar file. If the content is not
readable or in expected format, the function fails.
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It should not be possible to create a .boot file unless kernel and
stdlib are stated as permanent applications in the .rel file. Note
that 'permanent' is the default start type, so not specifying a start
type for kernel and stdlib is, as always, ok.
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Supervisor should never keep child specs for dead temporary children.
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* anders/diameter/testsuites/OTP-9829: (21 commits)
Install example dictionaries
Move example code to examples/code
Move example dictionaries to examples/dict
Set name/prefix at compilation, not in dictionaries
Add RFC 4004 (MIP) dictionary
Add RFC 4740 (SIP) dictionary
Add RFC 4072 (EAP) dictionary
Add RFC 4006 (CC) dictionary
Add RFC 4005 (NAS) dictionary
Add standards testcase to compiler suite
Remove {init,end}_per_group workaround
Use new syntax for specifying ct group properties
Increase timetrap in compiler suite
Minor capx suite tweaks
Minor makefile tweak
Remove trailing whitespace
Update skip condition in gen_sctp suite
Reintroduce gen_sctp suite
Remove delay from connect in transport suite
Add codec testcase for decode of unknown AVPs
...
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* anders/diameter/compilation_options/OTP-9826:
Allow module name mapping at dictionary compilation
Fix blunder that broke name/prefix compilation options
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* anders/diameter/missed_events/OTP-9824:
Update watchdog suite
Ensure capabilities exchange can't fail too early
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It is possible also in non-SMP case:
1. The process receives an exit signal and is set in status exiting
and inserted into the run queue.
2. The distribution port exits before the process has been selected
for execution and cannot remove the link half on the process since
it is in status exiting.
3. Process is selected for execution and when removing this link half
the distribution channel is gone!
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To avoid inappropriate defaults if the dictionaries are reused.
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To test compilation of example dictionaries from various standards.
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This undoes commit 162c0d3ee30790ec5a75e20b0e2e8bc61ed92375.
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No longer have to duplicate groups for sequential and parallel runs.
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Compilation is slow on Solaris for one.
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To the R15 behaviour, with a return value instead of badarg.
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Commit e05868f49b442c10cedbded390c110473cda6f00 was the original,
this commit is the result of splitting that one in two.
Resurrect this suite to make SCTP faults more visible: the transport
suite has sporadic failures because of them, despite having jacked
up timeouts to unreasonable values.
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There should be no need for it, previous introduction was misguided.
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That is, remove the catch for the pre-R15 behaviour.
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