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The "decoration" of opaque types works better than before when opaque
types are used by other opaque types.
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t_from_form() sometimes returned a more general type than it should
have done due to a bug in from_form_loop(): it stopped when the limit
was exceeded, which could mean a collapsed type. Returning a type with
smaller depth should fix this.
is_specialization() now handles opaque types before unions, which
should fix another problem.
The bugs reported by Kostis.
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into maint
* margnus1/dialyzer/fix_maps_opaque/ERL-249/PR-1161/OTP-13878:
erl_bif_types: Properly unopaque maps:merge/2 args
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erl_bif_types:type/5 was calling erl_types:map_pairwise_merge/3 directly
with its (potentially opaque) arguments, causing Dialyzer crashes.
Bug (ERL-249) reported and minimised test case provided by Felipe
Ripoll.
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* sverker/hipe-sparc-19/PR-1148:
Eliminate catch-all clause from two functions
Increase the time limit used by the test suite
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Fix a mistake in commit 85f6fe3b.
Instead of using the declared opaque type, the form's type is used in
a case where the opaque type is turned into a non-opaque type. The
result is more general types (smaller Erlang terms) and faster
analyses.
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A stronger version of Dialyzer complained that some case clauses in
functions xaluop_is_shift/1 and xaluop_normalise/1 are unreachable.
These clauses are now commented out. While at it, I thought that it
would be better to eliminate the catch-all clauses in order to be
certain we properly handle all RTL instructions that are used as
inputs to these functions.
Note: The code will now crash if there are unhandled cases.
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This is required in some really old SPARC machines running Solaris
we still have access to.
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Register allocation could transform something like
fmove u32, d99
to
fmove $rdx, 0x20($rsp)
which is an invalid instruction.
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Since the link register/return address is restored before stack
arguments are stored to the frame, we must not use it to store a stack
argument. We do that by adding it to the registers clobbered by
pseudo_tailcall_prepare.
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The problem was caused by shift-by-immediate-zero, which wraps to
immediate-32 with some shiftops. TODO: Someplace should be modified to
crash when these are generated so debugging further instances of this
gets easier in the future.
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t_map/3 previously required callers to perform this normalisation, but
as t_from_form/5 would sometimes fail to do so, this requirement is
relaxed.
Bug (ERL-177) reported and shrunk by Luke Imhoff.
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The Core Erlang pattern matching compiler was written long ago, at
a time when binaries and bistrings did not really exist in Erlang.
This patch, taken from the code of CutEr where it's used for more
than a year now, extends the transformation for pattern matching
compilation to also include binaries and bistrings.
Some code that was found erroneous and causes errors when compiling
the transformed code to native code was also taken out while at it.
Thanks to @aggelgian for most of the changes in the code.
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* hasse/dialyzer/improve_from_form/OTP-13547:
Update primary bootstrap
stdlib: Correct types and specs
dialyzer: Minor adjustments
dialyzer: Suppress unmatched_return for send/2
dialyzer: Improve the translation of forms to types
dialyzer: Use a cache when translating forms to types
dialyzer: Prepare erl_types:t_from_form() for a cache
dialyzer: Optimize erl_types:t_form_form()
dialyzer: Correct types
syntax_tools: Correct types
erts: Correct character repr in doc of the abstract format
stdlib: Correct types and specs
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It is possible that '...' is added later (OTP 20.0), but for now we
are not sure of all details.
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Spend less of the limited resources on recursive types.
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No change of functionality.
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When the translation from forms to types exceeds some limit, it is
faster to try small depths first.
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This reverts commit e020f75c10410a6943cd055bfa072a2641eab7da.
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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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