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2019-08-02Merge branch 'bjorn/compiler/fix-no_type_opt/ERL-997' of ↵Björn Gustavsson
https://github.com/bjorng/otp into maint OTP-15969 * 'bjorn/compiler/fix-no_type_opt/ERL-997' of https://github.com/bjorng/otp: Fix compiler crash when compiling with +no_type_opt
2019-08-01Merge branch 'bjorn/compiler/fix-unsafe-sharing/OTP-15963' into maintBjörn Gustavsson
* bjorn/compiler/fix-unsafe-sharing/OTP-15963: Fix unsafe code sharing
2019-07-30Fix compiler crash when compiling with +no_type_optBjörn Gustavsson
If the `no_type_opt` option was given, the compiler would crash when attempting to compile containing with a `try`...`after` construct, such as this code: foo() -> try make_ref() after ok end. To avoid having this bug re-appear, test the `no_type_opt` option in the test suites. https://bugs.erlang.org/browse/ERL-997
2019-07-29Fix unsafe code sharingBjörn Gustavsson
2019-07-11Merge branch 'maint-22' into maintJohn Högberg
* maint-22: Updated OTP version Prepare release # Conflicts: # make/otp_version_tickets
2019-07-11Merge branch 'john/compiler/fix-bad-try_catch-recv-fix/OTP-15953/ERL-999' ↵John Högberg
into maint * john/compiler/fix-bad-try_catch-recv-fix/OTP-15953/ERL-999: compiler: Fix compiler crash introduced by OTP-15952
2019-07-10Prepare releaseErlang/OTP
2019-07-10compiler: Fix compiler crash introduced by OTP-15952John Högberg
An assertion in code generation would fail when the common exit block was ?BADARG_BLOCK, as some operations expect to always "fail" directly to that block (= throw an exception) and we had inserted a dummy block in between. Other operations could also get funny fail labels, jumping to blocks that immediately jumped to {f,0}, but these were all cleaned up by beam_jump, sweeping the bug under the rug.
2019-07-10Merge branch 'maint-22' into maintJohn Högberg
* maint-22: Updated OTP version Prepare release # Conflicts: # make/otp_version_tickets
2019-07-09Prepare releaseErlang/OTP
2019-07-09Merge branch 'john/compiler/fix-fail-path-exceptions-bsm/OTP-15946' into ↵Erlang/OTP
maint-22 * john/compiler/fix-fail-path-exceptions-bsm/OTP-15946: beam_ssa_bsm: Leave ?BADARG_BLOCK alone when cloning fail path
2019-07-09Merge branch 'john/compiler/fix-unsafe-tuple_size-opt/OTP-15945' into maint-22Erlang/OTP
* john/compiler/fix-unsafe-tuple_size-opt/OTP-15945: beam_ssa_opt: Do not apply tuple_size optimization outside guards
2019-07-09Merge branch 'john/compiler/fix-try_catch-receives/OTP-15952' into maintJohn Högberg
* john/compiler/fix-try_catch-receives/OTP-15952: compiler: Fix broken 'receive' in try/catch blocks
2019-07-09compiler: Fix broken 'receive' in try/catch blocksJohn Högberg
This fix is rather ugly and tacked-on, but I'm not comfortable refactoring the pass in an emergency patch.
2019-07-04Merge branch 'john/compiler/fix-fail-path-exceptions-bsm/OTP-15946' into maintJohn Högberg
* john/compiler/fix-fail-path-exceptions-bsm/OTP-15946: beam_ssa_bsm: Leave ?BADARG_BLOCK alone when cloning fail path
2019-07-04Merge branch 'john/compiler/fix-unsafe-tuple_size-opt/OTP-15945' into maintJohn Högberg
* john/compiler/fix-unsafe-tuple_size-opt/OTP-15945: beam_ssa_opt: Do not apply tuple_size optimization outside guards
2019-07-03beam_ssa_bsm: Leave ?BADARG_BLOCK alone when cloning fail pathJohn Högberg
2019-07-03beam_ssa_opt: Do not apply tuple_size optimization outside guardsJohn Högberg
Rewriting `tuple_size` to `is_tuple` + `tuple_size` will cause it not to throw an exception, either crashing the compiler or the emulator when the code runs.
2019-06-26Fix slow compilation of huge functionsBjörn Gustavsson
Some huge functions would compile very slowly because of a bottleneck in `beam_ssa:def_used/2`. One example is the `cuter_binlib` module in https://github.com/cuter-testing/cuter. On my computer, this commit reduces the compilatation time for `cuter_binlib` to 45 seconds down from more than 4 minutes. Noticed-by: Kostis Sagonas
2019-06-24Eliminate dialyzer warningsBjörn Gustavsson
Eliminate the Dialyzer warnings shown when the limits in lib/cerl/erl_types.erl were raised as follows: -define(TUPLE_TAG_LIMIT, 10). -define(TUPLE_ARITY_LIMIT, 10). -define(SET_LIMIT, 64).
2019-06-13Merge branch 'maint-22' into maintJohn Högberg
* maint-22: Updated OTP version Prepare release # Conflicts: # make/otp_version_tickets
2019-06-12Prepare releaseErlang/OTP
2019-06-12Merge branch 'john/compiler/fix-bad-bitstring-type-opt/OTP-15872' into maint-22Erlang/OTP
* john/compiler/fix-bad-bitstring-type-opt/OTP-15872: beam_ssa_type: Fix incorrect bitstring unit determination
2019-06-11Merge branch 'john/erts/fix-bad-get_tuple_element-opt/OTP-15871/ERIERL-374' ↵John Högberg
into maint * john/erts/fix-bad-get_tuple_element-opt/OTP-15871/ERIERL-374: erts: Fix bad loader optimization of get_tuple_element
2019-06-11Merge branch 'john/compiler/fix-bad-bitstring-type-opt/OTP-15872' into maintJohn Högberg
* john/compiler/fix-bad-bitstring-type-opt/OTP-15872: beam_ssa_type: Fix incorrect bitstring unit determination
2019-06-10erts: Fix bad loader optimization of get_tuple_elementJohn Högberg
The following sequence would be wrongly optimized into a i_get_tuple_element2 instruction, reading an element from the wrong tuple: {get_tuple_element,{x,0},1,{x,0}}. {get_tuple_element,{x,0},2,{x,1}}.
2019-06-10beam_ssa_type: Fix incorrect bitstring unit determinationJohn Högberg
The compiler would treat the "Unit" of bs_init instructions as the unit of the result instead of the required unit of the input, causing is_binary checks to be wrongly optimized away.
2019-06-03Merge branch 'maint-22' into maintHans Bolinder
* maint-22: Updated OTP version Prepare release # Conflicts: # make/otp_version_tickets
2019-05-29Prepare releaseErlang/OTP
2019-05-29Merge branch 'bjorn/compiler/fix-beam_ssa_dead-patch/OTP-15845' into maint-22Erlang/OTP
* bjorn/compiler/fix-beam_ssa_dead-patch/OTP-15845: Fix unsafe optimizations where guard tests could be removed
2019-05-29Merge branch ↵Erlang/OTP
'bjorng_ghub/bjorn/compiler/fix-beam_ssa_dead-crash/ERL-956/OTP-15848' into maint-22 * bjorng_ghub/bjorn/compiler/fix-beam_ssa_dead-crash/ERL-956/OTP-15848: Eliminate crash in the beam_ssa_dead compiler pass
2019-05-29Merge branch 'bjorn/compiler/fix-unloadable-code-patch/ERL-955/OTP-15846' ↵Erlang/OTP
into maint-22 * bjorn/compiler/fix-unloadable-code-patch/ERL-955/OTP-15846: Fix loading of Core Erlang code for extracting a map element
2019-05-29Merge branch 'bjorn/compiler/fix-beam_except/ERL-954/OTP-15839' into maint-22Erlang/OTP
* bjorn/compiler/fix-beam_except/ERL-954/OTP-15839: Fix compiler crash in beam_except
2019-05-29Merge branch 'bjorn/compiler/fix-unsafe-type-inference/OTP-15838' into maint-22Erlang/OTP
* bjorn/compiler/fix-unsafe-type-inference/OTP-15838: Fix unsafe negative type inference # Conflicts: # lib/compiler/src/beam_ssa_type.erl
2019-05-29Merge branch 'john/compiler/list_append_type/OTP-15841' into maint-22Erlang/OTP
* john/compiler/list_append_type/OTP-15841: compiler: Fix broken type for erlang:'++'/2
2019-05-29Merge branch 'bjorn/compiler/fix-receive-patch/ERL-950/OTP-15832' into maint-22Erlang/OTP
* bjorn/compiler/fix-receive-patch/ERL-950/OTP-15832: Eliminate compiler crash when compiling complex receive statements
2019-05-29Merge pull request #2263 from ↵Björn Gustavsson
bjorng/bjorn/compiler/fix-beam_ssa_dead-crash/ERL-956/OTP-15848 Eliminate crash in the beam_ssa_dead compiler pass
2019-05-28Merge branch 'john/compiler/list_append_type/OTP-15841' into maintJohn Högberg
2019-05-28Fix unsafe optimizations where guard tests could be removedBjörn Gustavsson
A repeated test could be optimized away. Example: bar(A) -> if is_bitstring(A) -> if is_binary(A) -> binary; true -> bitstring end; true -> other end. In the example, the `is_binary/1` test would be optimized away, basically turning the example into: bar(A) -> if is_bitstring(A) -> bitstring; true -> other end. Thanks user Marcus Kruse in the Elixir forum for noticing this bug.
2019-05-28Eliminate crash in the beam_ssa_dead compiler passBjörn Gustavsson
The compiler could crash in the beam_ssa_dead pass while compiling complex nested `case` expressions. See the added test case for an example and explanation. https://bugs.erlang.org/browse/ERL-956
2019-05-27Merge branch 'bjorn/compiler/fix-unloadable-code-patch/ERL-955/OTP-15846' ↵Björn Gustavsson
into maint * bjorn/compiler/fix-unloadable-code-patch/ERL-955/OTP-15846: Fix loading of Core Erlang code for extracting a map element
2019-05-27Merge branch 'bjorn/compiler/fix-beam_ssa_dead-patch/OTP-15845' into maintBjörn Gustavsson
* bjorn/compiler/fix-beam_ssa_dead-patch/OTP-15845: Fix unsafe optimizations where guard tests could be removed
2019-05-27Merge branch 'bjorn/compiler/fix-beam_except/ERL-954/OTP-15839' into maintBjörn Gustavsson
* bjorn/compiler/fix-beam_except/ERL-954/OTP-15839: Fix compiler crash in beam_except
2019-05-27Fix compiler crash in beam_exceptBjörn Gustavsson
The compiler would crash in `beam_except` while compiling this function: bar(Req) -> ok = case Req of "POST" -> {error, <<"BAD METHOD ", Req/binary>>, Req}; _ -> ok end. https://bugs.erlang.org/browse/ERL-954
2019-05-27Merge branch 'bjorn/compiler/fix-unsafe-type-inference/OTP-15838' into maintBjörn Gustavsson
* bjorn/compiler/fix-unsafe-type-inference/OTP-15838: Fix unsafe negative type inference
2019-05-27compiler: Fix broken type for erlang:'++'/2John Högberg
2019-05-27Fix loading of Core Erlang code for extracting a map elementBjörn Gustavsson
The following Core Erlang code could not be loaded: 'f'/1 = fun (_1) -> case <_1> of <~{'foo':='foo'}~> when 'true' -> _1 end Loading would fail with the following message: beam/beam_load.c(2314): Error loading function example:f/1: op i_get_map_element_hash p x a u x: no specific operation found https://bugs.erlang.org/browse/ERL-955
2019-05-25Fix unsafe optimizations where guard tests could be removedBjörn Gustavsson
A repeated test could be optimized away. Example: bar(A) -> if is_bitstring(A) -> if is_binary(A) -> binary; true -> bitstring end; true -> other end. In the example, the `is_binary/1` test would be optimized away, basically turning the example into: bar(A) -> if is_bitstring(A) -> bitstring; true -> other end. Thanks user Marcus Kruse in the Elixir forum for noticing this bug.
2019-05-24Fix unsafe negative type inferenceBjörn Gustavsson
The type optimizer pass (`beam_ssa_type`) could make unsafe negative inferences. That is, incorrectly infer that a variable could *not* have a particular type. This bug was found when adding another optimization. It is not clear how write a failing test case without that added optimization.
2019-05-23Merge branch 'bjorn/compiler/fix-receive-patch/ERL-950/OTP-15832' into maintBjörn Gustavsson
* bjorn/compiler/fix-receive-patch/ERL-950/OTP-15832: Eliminate compiler crash when compiling complex receive statements
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