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u as in union
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* sverker/ets-test-cuddle:
ets_SUITE: Remove more redundant option combos
ets_SUITE: Try avoid redundant option combos
ets_SUITE: Reduce table type combos by removing "void"
ets_SUITE: Optimize throughput_benchmark
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* raimo/test-cuddling:
Decrease probability for failed histogram
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Introduce the no_spawn_compiler_process option
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* maint:
Fix rare bug in binary matching (again)
Conflicts:
lib/compiler/src/beam_bsm.erl
lib/compiler/src/sys_core_bsm.erl
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* bjorn/compiler/fix-binary-matching/ERL-689/OTP-15335:
Fix rare bug in binary matching (again)
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By default, all code is compiled in a separate process
which is terminated at the end of compilation. However,
some tools, like Dialyzer or compilers for other BEAM languages,
may already manage their own worker processes and spawning
an extra process may slow the compilation down.
In such scenarios, you can pass this option to stop the
compiler from spawning an additional process.
This generalizes commit 657760e18087b0cdbaecc5e96e46f6f66bc9497a.
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* richcarl/erts/erl_init-cleanup/OTP-15336:
sasl: Order systools_make:preloaded modules alphabetically
Update preloaded modules
Move calling on_load for preloaded modules to erl_init
Make erl_init.c pass the boot module to erl_init.beam
Remove obsolete comment text
Remove undocumented and unused -# display_items emulator option
Remove broken and undocumented boot function emulator option
Replace remaining references to otp_ring0 with erl_init
Drop otp_ring0, using erl_init instead
Update preloaded modules
Add erl_init module
Conflicts:
erts/emulator/beam/erl_init.c
erts/preloaded/ebin/erl_prim_loader.beam
erts/preloaded/ebin/erl_tracer.beam
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_code_purger.beam
erts/preloaded/ebin/erts_dirty_process_signal_handler.beam
erts/preloaded/ebin/erts_internal.beam
erts/preloaded/ebin/erts_literal_area_collector.beam
erts/preloaded/ebin/init.beam
erts/preloaded/ebin/otp_ring0.beam
erts/preloaded/ebin/prim_buffer.beam
erts/preloaded/ebin/prim_eval.beam
erts/preloaded/ebin/prim_file.beam
erts/preloaded/ebin/prim_inet.beam
erts/preloaded/ebin/prim_zip.beam
erts/preloaded/ebin/zlib.beam
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* bjorn/compiler/fix-r21-option:
Fix code generation of binary instructions with the r21 option
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Minor cleanups and bug fixes of the compiler
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* ingela/ssl/extensions-and-TLS-1.3-handshaking:
ssl: Correct extension decoding and dialyzer spec
ssl: Generalize extensions handling
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* siri/appups-21.2:
Update kernel, stdlib and sasl appups for OTP-21.2
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* sverker/erts/cleanup-efile-argc-checks:
erts: Remove unnecessary NIF argc tests
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meta_wb
smp_insert
smp_fixed_delete
smp_select_delete
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OTP 22 extends the binary instructions to support a Y register
destination. When giving an option to compile for an earlier
release, make sure that binary instructions don't use a Y register
destination, by rewriting the binary instructions to use an X
register destination and adding a `move` instruction to move
the value to the Y register.
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Rewrite BSM optimizations in the new SSA-based intermediate format
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This has been superseded by bs_get_tail/3. Note that it is NOT
removed from the emulator or beam_disasm, as old modules are still
legal.
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Remove the variable aliasing support that was needed for the
old beam_bsm pass.
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The beam_ssa_bsm pass welds chained matches together, but the match
expressions themselves are unchanged and if there's a tail
alignment check it will be done each time. This subpass figures out
the checks we've already done and deletes the redundant ones.
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This commit improves the bit-syntax match optimization pass,
leveraging the new SSA intermediate format to perform much more
aggressive optimizations. Some highlights:
* Watch contexts can be reused even after being passed to a
function or being used in a try block.
* Sub-binaries are no longer eagerly extracted, making it far
easier to keep "happy paths" free from binary creation.
* Trivial wrapper functions no longer disable context reuse.
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2e40d8d1c51a attempted fix a bug in binary matching, but it only
fixed the bug for the minimized test case.
This commit removes the previous fix and fixes the bug in a more
effective way. See the comments in the new code in `sys_core_bsm`
for an explanation.
This commit restores the optimizations in string.erl and dets_v9.erl
that the previous fix disabled.
I have not found any code where this commit will disable optimizations
when they are actually safe. There are some changes to the code
in ssl_cipher.erl in that some bs_start_match2 instruction did not
reuse the binary register for the match context, but the delayed
sub binary optimizations was never applied to the code in the first
place.
https://bugs.erlang.org/browse/ERL-689
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As TLS 1.3 introduces more extensions in other places than in hello messages
we like to have generalize extension handling encode/decode with some
hello wrappers.
Also extend property tests of handshake encod/decode
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Moving away this optimization makes beam_block do one thing
and one thing only -- creating blocks.
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The only caller of bif_to_test/3 is beam_ssa_codegen.
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Disallow a literal map source for get_map_elements. There is currently
runtime support for get_map with a literal map source, but by
forbidding it in OTP 22, the runtime support could be removed in a
future release (perhaps OTP 24).
Also verify that the source arguments for get_list, get_hd, get_tl,
and get_tuple_element are not literals. Literals are not supported for
those instructions in the runtime system; verifying it in
beam_validator is a convenience so that this kind of bug will
be detected already during compilation.
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The source map for `get_map_element` is not supposed to be a literal,
and the sanitization code is supposed to ensure that.
The sanitization incorrectly translated this code:
Map = get_tuple_element literal {ok,#{key=>value}}, literal 1
Var = get_map_element Map, literal {a,key}
To this code:
Var = get_map_element literal #{key=>value}, literal {a,key}
Make sure to substitute the arguments for `get_map_element` before
looking for a literal source map.
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Using maps and cerl_sets instead of dict and sets will slightly
speed up the beam_clean pass for modules with many functions
and/or calls to local functions.
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It is not necessary to combine get_hd and get_tl instruction to
a get_list instruction. It will be done in beam_z.
After this change, beam_flatten does nothing more than eliminating
the blocks.
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Continuing the simplification of beam_flatten, move the optimization
that eliminates a test_heap instruction following a binary construction
by incorporating the allocation of the heap space into the bs_init*
instruction itself.
This change does not change the generated code in any way.
Also remove beam_utils:combine_heap_needs/2, because beam_flatten
was the last user of it.
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The purpose of beam_flatten is to eliminate the blocks created by
beam_block, but it also does a few optimizations because at the
time the optimizations were added, beam_flatten was the most
convenient place.
Move the optimization that places `{move,Something,{x,0}}` before
`call` instructions from beam_flatten to beam_ssa_codegen.
This change will very slightly improve compilation times, and it
will also apply the optimization in more places. In particular,
a `{move,Literal,{x,0}}` would never be moved passed a `trim`
instruction before this change. Now it will.
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jhogberg/john/compiler/validator-aliased-type-fixes/ERL-735
beam_validator: Use set_aliased_type in more operations
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It's impossible to call NIF with wrong argc from Erlang
and thus pointless to throw badarg.
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The following code broke because aliases weren't tracked for hd/1:
bug(Bool) ->
Bug = remote:call(),
if
Bool -> %% Branch of some kind.
_ = hd(Bug),
remote:call(),
hd(Bug)
end.
Related to 1f221b27f1336e747f7409692f260055dd3ddf79
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This is needed for testcases to run correctly.
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fix for ppc64le / add travis test for ppc64le
OTP-15313
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to reduce test times
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Avoid repeating same tests for [] and [set].
Test case 'default' verifies 'set' to be the default type.
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