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http://trac.webkit.org/changeset/148999ggaren@apple.com authored
Filled out more cases of branch folding in bytecode when emitting expressions into a branching context https://bugs.webkit.org/show_bug.cgi?id=115057 Reviewed by Phil Pizlo. We can't fold the number == 1 case to boolean because all non-zero numbers down-cast to true, but only 1 is == to true. Source/WTF: Filled out more cases of branch folding in bytecode when emitting expressions into a branching context https://bugs.webkit.org/show_bug.cgi?id=115057 Reviewed by Filip Pizlo. Added a helper constructor for TriState so clients can make one without branching or making assumptions about the integer values of TriStates. * wtf/TriState.h: (WTF::triState): (WTF): LayoutTests: Re-landing <http://trac.webkit.org/changeset/148999> Filled out more cases of branch folding in bytecode when emitting expressions into a branching context https://bugs.webkit.org/show_bug.cgi?id=115057 Reviewed by Phil Pizlo. Added a more exhaustive correctness test. * fast/js/branch-fold-correctness-expected.txt: Added. * fast/js/branch-fold-correctness.html: Added. git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149236 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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