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Because NaN is not handled in a separate branch (like on other architetures - e.g. branch-on-parity-flag on ia32), and every comparison with NaN returns false, except "!=" we can't flip the branch condition in the same way for double compares like we do for integer compares. We could re-order blocks to always make the false-successor the fall-through, but for now I just disable flipping the branch condition for double compares. BUG=#27481 R=zra@google.com Review URL: https://codereview.chromium.org/2400103002 .
Run Existing Tests ================== See the output of ../tools/test.py --help for how to run tests. See also https://code.google.com/p/dart/wiki/Building#Testing for detailed examples. Create New Tests ================ See comments above factory StandardTestSuite.forDirectory in ../tools/testing/dart/test_suite.dart for the default test directory layout. By default test-file names must end in "_test.dart", but some test suites, such as ./co19, subclass StandardTestSuite and override this default. See comments at the beginning of ../tools/testing/dart/multitest.dart for how to create tests that pass by failing with a known error. For example, ... int x = "not an int"; /// 01: static type warning ... as part of a test will only pass the "--compiler dart2analyzer" test if the assignment generates a static type warning.