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2015-01-12Update the comments that explain what beam_dead doesBjörn Gustavsson
2015-01-09Improve optimization of bs_start_match2Björn Gustavsson
2015-01-09Extend count_bits_matched/3 to handle the UTF instructionsBjörn Gustavsson
While we are, clean up the comments and rearrange the code for clarity. Also add a test to cover the last uncovered line in beam_dead.erl.
2015-01-09misc_SUITE: Cover the exception handling code in beam_deadBjörn Gustavsson
Amend the test suite to call beam_dead as originally intended (and not beam_block), and modify the input data so that the exception will occur within the try ... catch block in function/2.
2015-01-09Generalize optimizations using shortcut_rel_op/4Björn Gustavsson
Better optimizations with less code.
2015-01-09beam_dead: Optimize branches from relational conditionalsBjörn Gustavsson
The BEAM compiler translates code such as: is_hex_digit(D) when $0 =< D, D =< $9 -> true; is_hex_digit(D) when $a =< D, D =< $z -> true; is_hex_digit(D) when $A =< D, D =< $Z -> true; is_hex_digit(_) -> false. to something like this: L0: test is_ge L1 {x,0} 48 test is_ge L1 57 {x,0} move true {x,0} return. L1: test is_ge L2 {x,0} 97 test is_ge L2 122 {x,0} move true {x,0} return L2: test is_ge L3 {x,0} 65 test is_ge L3 90 {x,0} move true {x,0} return L3: move false {x,0} return We can see that tests will be repeated even if they cannot possibly succeed. For instance, if we pass in {x,0} equal to 32, the first test that {x,0} is greater than or equal to 48 at L0 will fail. The control will transfer to L1, where it will be tested whether {x,0} is greater than 97. That test will fail and control will pass to L2, where again the test will fail. The compiler can do better by short-circuiting repeating tests: L0: test is_ge L3 {x,0} 48 test is_ge L1 57 {x,0} move true {x,0} return. L1: test is_ge L2 {x,0} 97 test is_ge L3 122 {x,0} move true {x,0} return L2: test is_ge L3 {x,0} 65 test is_ge L3 90 {x,0} move true {x,0} return L3: move false {x,0} return
2014-12-10Merge tag 'OTP-17.4'Marcus Arendt
=== OTP-17.4 === Changed Applications: - asn1-3.0.3 - common_test-1.9 - compiler-5.0.3 - crypto-3.4.2 - debugger-4.0.2 - dialyzer-2.7.3 - diameter-1.8 - edoc-0.7.16 - eldap-1.1 - erl_docgen-0.3.7 - erl_interface-3.7.20 - erts-6.3 - eunit-2.2.9 - hipe-3.11.2 - inets-5.10.4 - jinterface-1.5.12 - kernel-3.1 - megaco-3.17.3 - mnesia-4.12.4 - observer-2.0.3 - odbc-2.10.22 - otp_mibs-1.0.10 - parsetools-2.0.12 - percept-0.8.10 - runtime_tools-1.8.15 - snmp-5.1.1 - ssh-3.1 - ssl-5.3.8 - stdlib-2.3 - syntax_tools-1.6.17 - test_server-3.7.2 - tools-2.7.1 - wx-1.3.2 Unchanged Applications: - cosEvent-2.1.15 - cosEventDomain-1.1.14 - cosFileTransfer-1.1.16 - cosNotification-1.1.21 - cosProperty-1.1.17 - cosTime-1.1.14 - cosTransactions-1.2.14 - et-1.5 - gs-1.5.16 - ic-4.3.6 - orber-3.7.1 - os_mon-2.3 - ose-1.0.2 - public_key-0.22.1 - reltool-0.6.6 - sasl-2.4.1 - typer-0.9.8 - webtool-0.8.10 - xmerl-1.3.7 Conflicts: OTP_VERSION erts/vsn.mk
2014-12-09Prepare releaseErlang/OTP
2014-12-01compiler: Coalesce map keys in dialyzer modeBjörn-Egil Dahlberg
This fixes a regression introduced in commit 805f9c89fc01220bc1bb0f27e1b68fd4eca688ba The problem occured with map keys compiled with dialyzer option turned on. In OTP 17, map keys needs to be literals.
2014-11-17Merge branch 'maint'Björn Gustavsson
* maint: Fix miscompilation when module contains multiple named funs Fix locations of shadowing warnings in ms_transform
2014-10-27Extract annotations from filter qualifiers in a type-friendly wayBjörn Gustavsson
Commit 78ce8917d started to use get_anno/1 to extract the line annotation from filter qualifiers in comprehensions, but this does not respect the spec of this function and resuls in a dialyzer warning. To make the code more type-friendly, introduce a get_qual_anno/1 function. Kostis Sagonas suggested that the function should be implemented similar to this to also ensure that the qualifiers are of the appropriate form: get_qual_anno({call,Line,_,_}) -> Line; get_qual_anno({op,Line,_,_,_}) -> Line; . . . get_qual_anno({var,Line,_}) -> Line. The problem is that it is difficult to know exacly which forms that may occur and the function will need to be updated if new abstract forms are added. Thus this implementation would complicate maintanance without any real payoff. Reported-by: Kostis Sagonas
2014-10-27Fix miscompilation when module contains multiple named funsAnthony Ramine
A module containing two named funs bearing the same name and arity could be miscompiled. Reported-by: Sam Chapin
2014-10-21Merge branch 'egil/map-type-opt/OTP-12253'Björn-Egil Dahlberg
* egil/map-type-opt/OTP-12253: compiler: Type is_nonempty_list optimization compiler: Type map optimization
2014-10-20Merge branch 'tuncer/compiler/finalize-asm-deprecation/OTP-12100'Björn Gustavsson
* tuncer/compiler/finalize-asm-deprecation/OTP-12100: compiler: finalize 18.x 'asm' deprecation
2014-10-07compiler: Type is_nonempty_list optimizationBjörn-Egil Dahlberg
2014-10-07compiler: Type map optimizationBjörn-Egil Dahlberg
2014-10-03Merge branch 'egil/maps/variable-keys/OTP-12218'Björn-Egil Dahlberg
* egil/maps/variable-keys/OTP-12218: (22 commits) compiler: Update test for Maps aliasing compiler: Properly support Map aliasing compiler: Refactor Map pairs aliasing compiler: Fix harmless need_heap error for Maps stdlib: Update Map tests stdlib: Use environment bindings for Maps keys in erl_eval matching debugger: Update Map tests compiler: Update Map tests compiler: Fix v3_core Maps pair chains compiler: Use expressions in core patterns compiler: Use variables in Map cerl inliner compiler: Reintroduce binary limit for Map keys compiler: Shameless v3_core hack for variables compiler: Use variables in Map beam assmebler compiler: Use variables in Map kernel pass compiler: Use variables in Map core pass compiler: Normalize unary ops on Maps key literals stdlib: Update Map tests stdlib: erl_lint Map key variables compiler: Maps are always patterns never values in matching ...
2014-10-02compiler: Update test for Maps aliasingBjörn-Egil Dahlberg
2014-10-02compiler: Properly support Map aliasingBjörn-Egil Dahlberg
Matching of type: #{K := V1} = #{K := V2} = M, Will alias (coalesce) to #{K := V1 = V2} = M.
2014-10-01compiler: Refactor Map pairs aliasingBjörn-Egil Dahlberg
2014-10-01compiler: Fix harmless need_heap error for MapsBjörn-Egil Dahlberg
Need heap for maps is zero and fall through is also zero.
2014-09-17Merge tag 'OTP-17.3'Henrik Nord
=== OTP-17.3 === Changed Applications: - asn1-3.0.2 - common_test-1.8.2 - compiler-5.0.2 - crypto-3.4.1 - dialyzer-2.7.2 - diameter-1.7.1 - edoc-0.7.15 - erl_docgen-0.3.6 - erl_interface-3.7.18 - erts-6.2 - eunit-2.2.8 - hipe-3.11.1 - ic-4.3.6 - inets-5.10.3 - jinterface-1.5.10 - kernel-3.0.3 - megaco-3.17.2 - mnesia-4.12.3 - observer-2.0.2 - odbc-2.10.21 - os_mon-2.3 - ose-1.0.1 - public_key-0.22.1 - sasl-2.4.1 - snmp-5.1 - ssh-3.0.5 - ssl-5.3.6 - stdlib-2.2 - tools-2.7 - wx-1.3.1 Unchanged Applications: - cosEvent-2.1.15 - cosEventDomain-1.1.14 - cosFileTransfer-1.1.16 - cosNotification-1.1.21 - cosProperty-1.1.17 - cosTime-1.1.14 - cosTransactions-1.2.14 - debugger-4.0.1 - eldap-1.0.3 - et-1.5 - gs-1.5.16 - orber-3.7 - otp_mibs-1.0.9 - parsetools-2.0.11 - percept-0.8.9 - reltool-0.6.6 - runtime_tools-1.8.14 - syntax_tools-1.6.16 - test_server-3.7.1 - typer-0.9.8 - webtool-0.8.10 - xmerl-1.3.7 Conflicts: OTP_VERSION erts/vsn.mk
2014-09-15Update release notesErlang/OTP
2014-09-15Update version numbersErlang/OTP
2014-09-01Update primary bootstrapBjörn Gustavsson
2014-09-01sys_core_fold: Eliminate name capture bugBjörn Gustavsson
The scope is supposed to contain all variables that are currently live. We need this information for certain optimizations to avoid capturing a name (a name that is in the scope must be renamed; for an example, see move_let_into_expr/2 or any function that calls sub_subst_scope/1). We also use the scope to optimize sub_del_var/2 and sub_is_val/2. When optimizing case expressions, the scope could be reset to an empty list (because sub_new/0 was called instead of sub_new/1). That could cause name capture if inlining was turned on. As simple way to force this bug is to uncomment the "-define(DEBUG, 1)." near the beginning of the file. Without this correction, most files in the test suite fail to compile.
2014-08-26compiler: Update Map testsBjörn-Egil Dahlberg
2014-08-26compiler: Fix v3_core Maps pair chainsBjörn-Egil Dahlberg
Check for literals instead of variables when constructing chains.
2014-08-26compiler: Use expressions in core patternsBjörn-Egil Dahlberg
Two patterns, binary_segment size and map_pair key, are expressions even in matching. If only bound variables are used we are fine but some expressions which appears as literals needs to be lifted. Currently only Map key binaries will use this.
2014-08-26compiler: Use variables in Map cerl inlinerBjörn-Egil Dahlberg
2014-08-26compiler: Reintroduce binary limit for Map keysBjörn-Egil Dahlberg
2014-08-26compiler: Shameless v3_core hack for variablesBjörn-Egil Dahlberg
2014-08-26compiler: Use variables in Map beam assmeblerBjörn-Egil Dahlberg
2014-08-22compiler: Use variables in Map kernel passBjörn-Egil Dahlberg
2014-08-22compiler: Use variables in Map core passBjörn-Egil Dahlberg
2014-08-22compiler: Normalize unary ops on Maps key literalsBjörn-Egil Dahlberg
Unary ops are normalized before core transformation, i.e. handle negative integers as map keys. Strictly speaking, map keys are expressions but by handling them as patterns we can normalize negative integers.
2014-08-14compiler: finalize 18.x 'asm' deprecationTuncer Ayaz
'asm' was deprecated in 18315c16, to be removed in 18.x.
2014-08-14Merge branch 'nox/compiler/improve-core-lint'Björn Gustavsson
* nox/compiler/improve-core-lint: Remove obsolete comment in core_lint Handle return mismatches for calls and primops Check for more return mismatches Use +clint0 in compiler's test suites
2014-08-07Remove obsolete comment in core_lintAnthony Ramine
2014-08-07Handle return mismatches for calls and primopsAnthony Ramine
Only exit BIFs and the match_fail primop are allowed to run where more than one value is expected.
2014-08-07Check for more return mismatchesAnthony Ramine
All expressions but calls and primops are now checked for return mismatches.
2014-08-07Use +clint0 in compiler's test suitesAnthony Ramine
2014-07-03compiler: Maps are always patterns never values in matchingBjörn-Egil Dahlberg
Removed dead code.
2014-06-24compiler: Fix v3_kernel Maps pretty printingBjörn-Egil Dahlberg
2014-06-24compiler: Fix v3_core Maps pretty printingBjörn-Egil Dahlberg
Key and value were interchanged.
2014-06-24Merge tag 'OTP-17.1'Marcus Arendt
=== OTP-17.1 === Changed Applications: - asn1-3.0.1 - common_test-1.8.1 - compiler-5.0.1 - crypto-3.4 - debugger-4.0.1 - dialyzer-2.7.1 - diameter-1.7 - erl_interface-3.7.17 - erts-6.1 - hipe-3.11 - inets-5.10.2 - kernel-3.0.1 - mnesia-4.12.1 - observer-2.0.1 - reltool-0.6.6 - ssh-3.0.3 - ssl-5.3.5 - stdlib-2.1 - syntax_tools-1.6.15 - test_server-3.7.1 - tools-2.6.15 - typer-0.9.8 - wx-1.3 Unchanged Applications: - cosEvent-2.1.15 - cosEventDomain-1.1.14 - cosFileTransfer-1.1.16 - cosNotification-1.1.21 - cosProperty-1.1.17 - cosTime-1.1.14 - cosTransactions-1.2.14 - edoc-0.7.13 - eldap-1.0.3 - erl_docgen-0.3.5 - et-1.5 - eunit-2.2.7 - gs-1.5.16 - ic-4.3.5 - jinterface-1.5.9 - megaco-3.17.1 - odbc-2.10.20 - orber-3.6.27 - os_mon-2.2.15 - ose-1.0 - otp_mibs-1.0.9 - parsetools-2.0.11 - percept-0.8.9 - public_key-0.22 - runtime_tools-1.8.14 - sasl-2.4 - snmp-4.25.1 - webtool-0.8.10 - xmerl-1.3.7
2014-06-19Prepare releaseErlang/OTP
2014-06-18Merge branch 'maint'Björn-Egil Dahlberg
2014-06-18Merge branch 'egil/fix-doc-links' into maintBjörn-Egil Dahlberg
* egil/fix-doc-links: doc: Fix broken links in Installation Guide doc: Fix broken links
2014-06-17Merge branch 'maint'Hans Bolinder
* maint: [dialyzer] Correct a doc bug introduced in 0b041238 [dialyzer] Use the option 'dialyzer' to control the compiler [dialyzer] Fix handling of literal records
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