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A put_map_assoc instruction with an empty source map should be
converted to a simpler new_map instruction. The transformation
didn't happen because an empty source map is no longer represented
as a NIL term (as it was in the beginning before map literals
were implemented).
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Using the exact operator (':=') is only allowed when an existing map
is being updated. Thus the following causes a compilation error:
#{k:=v}
Therefore there is no need to support the put_map_exact instruction
without a source map.
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* egil/maps-test-coverage:
erts: Remove code that was commented out
erts: Cover maps:values/1 for large maps
erts: Test maps:from_list/1 shrinking
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* egil/fix-maps-deep-colliding-merge:
erts: Fix deep colliding hash values in maps:from_list/1
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* egil/fix-hash-float-zero/OTP-12641:
erts: Ensure hashing of zero is consistent
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Erlang treats positive and negative zero as equal, meaning,
true = 0.0 =:= 0.0/-1
However, Erlangs hash functions: hash, phash and phash2 did not
reflect this behaviour. Meaning, the hash values produced by
the different hash functions would not be identical for positive
and negative zero.
This commit ensures that hash value of positive zero is always
produced regardless of the signedness of the zero float, i.e.
true = erlang:phash2(0.0) =:= erlang:phash2(0.0/-1)
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* sverk/maps-bin2term-eqhash-bug/12585:
erts: Fix bug in map_from_list when keys clash in both value and hash
erts: Fix bug in binary_to_term for big maps with 32 bit hash-clash
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Repeated keys will shrink map to a flatmap if the number of pairs drops below the limit.
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* sverk/refactor-encode-size/OTP-12585:
erts: Optimize insert and delete for big maps
erts: Optimize == and /= for unequal big maps
erts: Refactor encode_size_struct_int
Conflicts:
erts/emulator/beam/erl_map.c
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* sverk/ets-grow-faulty-assert/OTP-12647:
erts: Fix ets bug in debug VM
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Symptom: ASSERT(segtab[seg_ix] == NULL) in alloc_seg() fails.
Remedy: Make sure we set segment pointer to NULL in free_seg()
even when we switch to smaller segtab.
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* sverk/valgrind-broken_halt:
erts: Suppress valgrind for bif_SUITE:erlang_halt
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Subtle bug in qsort callback. Cast from Sint to int does not retain sign.
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binary_to_term threw badarg as the "reject_dupkey" case in
hashmap_from_unsored_array was always triggered when hash-clash was
found as the first round in the loop compared the key with itself.
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Reported-by: Jesper Louis Andersen
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* egil/fix-maps-tmp-heap:
erts: Test deep Maps updates
erts: Use halfword secure tmp heap
erts: Remove unused tmp heap in make_internal_hash
Conflicts:
erts/emulator/test/map_SUITE.erl
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* egil/fix-maps-from_list-size:
erts: Strengthen Maps merge tests
erts: Try to test deep Maps collision
erts: Fix size bug in maps:from_list/1 BIF
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Ensure maps:size/1 is correct.
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The wrong size was imprinted on maps with deep hash key collisions.
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Do fast path without bit count for full internal nodes.
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Bail out as soon as we find a diff between maps
if we are not interested in term order.
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to handle the "start of list" case in one place and not seven.
Note that this commit reverts (47d6fd3ccf35) back to using WSTACK
and pushing raw pointers. We disable GC while yielding, so this should not
be a problem.
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which does a deliberate deref of null pointer which is caught by
a SEGV signal handler to resume crash dumping.
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* egil/fix-maps-new_map-instruction:
erts: Eliminate potential heap fragments after Map creation
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* egil/fix-make_internal_hash-float:
erts: Add tests for internal_hash
erts: Fix make_internal_hash for 0.0 vs -0.0
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* egil/maps/tests:
debugger: Strengthen Maps tests
compiler: Strengthen Maps tests
erts: Strengthen Maps tests
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The internal_hash should produce the same hash value for
identical terms, in this case 0.0 =:= -0.0.
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Conflicts:
lib/stdlib/src/stdlib.appup.src
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* sverk/large-list_to_integer-bug/OTP-12624:
erts: Fix bug in list_to_integer for very large strings
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* dgud/erts/fix-driver-thread-name:
Fix thread name from driver api
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* egil/fix-make_internal_hash:
erts: Fix missing case in make_internal_hash
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* sverk/hamt-encode-size-bug/OTP-12585:
erts: Fix bug in term_to_binary size estimation for hamt
erts: Optimize term_to_binary size estimation
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* rickard/time_api/OTP-11997:
Misc fixes
Conflicts:
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
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* egil/maint/process_dictionary-initial-size/OTP-12535:
erts: Document option 'hpds'
erts: Enable command line argument for initial pd size
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* egil/maps/refactor-tagscheme/OTP-12585:
erts: Refactor Map - use multiple values ESTACK_PUSHN
erts: GC needs the size even if the frag is not referenced
Revert "hipe: Handle separate hashmap tag correctly"
erts: Combine flat and hash maps under one unifying tag
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for tuples and maps containing ascii strings (lists).
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