170108 2017-03-26 11:51:01 -0700 Air should use RegisterSet for RegLiveness 2017-03-26 16:36:40 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build All All RESOLVED FIXED P2 Normal --- 1 fpizlo fpizlo buildbot saam ysuzuki oldest_to_newest 1291345 0 fpizlo 2017-03-26 11:51:01 -0700 We shouldn't use those fancy index sparse sets and vectors and stuff. We should just use RegisterSet, since that's a soooper fast and compact bitvector. 1291346 1 305428 fpizlo 2017-03-26 11:52:00 -0700 Created attachment 305428 maybe it'll work 1291356 2 305434 fpizlo 2017-03-26 13:32:30 -0700 Created attachment 305434 the patch 1291358 3 buildbot 2017-03-26 13:34:33 -0700 Attachment 305434 did not pass style-queue: ERROR: Source/JavaScriptCore/b3/B3TimingScope.cpp:60: More than one command on the same line [whitespace/newline] [4] ERROR: Source/JavaScriptCore/b3/air/AirLowerAfterRegAlloc.cpp:37: Alphabetical sorting problem. [build/include_order] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.h:45: The parameter name "code" adds no information, so it should be removed. [readability/parameter_name] [5] ERROR: Source/JavaScriptCore/b3/air/AirReportUsedRegisters.cpp:34: Alphabetical sorting problem. [build/include_order] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:52: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:61: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:64: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:68: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:79: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:86: Multi line control clauses should use braces. [whitespace/braces] [4] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:104: When wrapping a line, only indent 4 spaces. [whitespace/indent] [3] ERROR: Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:114: When wrapping a line, only indent 4 spaces. [whitespace/indent] [3] Total errors found: 12 in 16 files If any of these errors are false positives, please file a bug against check-webkit-style. 1291362 4 305434 ysuzuki 2017-03-26 13:59:34 -0700 Comment on attachment 305434 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=305434&action=review r=me > Source/JavaScriptCore/b3/B3TimingScope.cpp:60 > + return ensurePointer(s_state, [] { return new State(); }); Nice thing! > Source/JavaScriptCore/b3/air/AirLiveness.h:-403 > -typedef AbstractLiveness<RegLivenessAdapter> RegLiveness; OK, this will be replaced with specialized RegLiveness, which uses RegisterSet. > Source/JavaScriptCore/b3/air/AirRegLiveness.cpp:95 > +} OK, it is (logically) identical to the AbstractLiveness one. 1291364 5 fpizlo 2017-03-26 14:41:28 -0700 Landed in https://trac.webkit.org/changeset/214408/webkit 1291372 6 305434 saam 2017-03-26 15:49:42 -0700 Comment on attachment 305434 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=305434&action=review > Source/JavaScriptCore/ChangeLog:10 > + AbstractLiveness<>, but it's about 30% faster. It gets its speed boost from just using Awesome! > Source/WTF/wtf/Atomics.h:532 > + T* newValue = func(); Style nit: It feels weird to take a lambda here, and assume that it calls "new" on T, since you call "delete" below. Why not just take arguments for T's constructor that you forward to it? 1291373 7 305434 saam 2017-03-26 15:50:28 -0700 Comment on attachment 305434 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=305434&action=review >> Source/WTF/wtf/Atomics.h:532 >> + T* newValue = func(); > > Style nit: It feels weird to take a lambda here, and assume that it calls "new" on T, since you call "delete" below. Why not just take arguments for T's constructor that you forward to it? Or perhaps have two lambdas. One for making a value, one for cleanup 1291377 8 fpizlo 2017-03-26 16:36:40 -0700 (In reply to Saam Barati from comment #7) > Comment on attachment 305434 [details] > the patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=305434&action=review > > >> Source/WTF/wtf/Atomics.h:532 > >> + T* newValue = func(); > > > > Style nit: It feels weird to take a lambda here, and assume that it calls "new" on T, since you call "delete" below. Why not just take arguments for T's constructor that you forward to it? > > Or perhaps have two lambdas. One for making a value, one for cleanup You're right, the lambda is dumb. It should just take a type parameter and new it, and then it should take an argument pack to pass to the constructor. 305428 2017-03-26 11:52:00 -0700 2017-03-26 13:32:30 -0700 maybe it'll work blah.patch text/plain 32192 fpizlo SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DTWFrZUxpc3RzLnR4dAo9PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0t LSBTb3VyY2UvSmF2YVNjcmlwdENvcmUvQ01ha2VMaXN0cy50eHQJKHJldmlzaW9uIDIxNDQwNCkK KysrIFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DTWFrZUxpc3RzLnR4dAkod29ya2luZyBjb3B5KQpA QCAtMTAxLDYgKzEwMSw3IEBAIHNldChKYXZhU2NyaXB0Q29yZV9TT1VSQ0VTCiAgICAgYjMvYWly L0Fpck9wdGltaXplQmxvY2tPcmRlci5jcHAKICAgICBiMy9haXIvQWlyUGFkSW50ZXJmZXJlbmNl LmNwcAogICAgIGIzL2Fpci9BaXJQaGFzZVNjb3BlLmNwcAorICAgIGIzL2Fpci9BaXJSZWdMaXZl bmVzcy5jcHAKICAgICBiMy9haXIvQWlyUmVwb3J0VXNlZFJlZ2lzdGVycy5jcHAKICAgICBiMy9h aXIvQWlyU2ltcGxpZnlDRkcuY3BwCiAgICAgYjMvYWlyL0FpclNwZWNpYWwuY3BwCkluZGV4OiBT b3VyY2UvSmF2YVNjcmlwdENvcmUvSmF2YVNjcmlwdENvcmUueGNvZGVwcm9qL3Byb2plY3QucGJ4 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