[Webkit-unassigned] [Bug 56913] New: Mapping booleans the same way as integers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=56913

           Summary: Mapping booleans the same way as integers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zherczeg at webkit.org
                CC: ggaren at apple.com, barraclough at apple.com


There was a discussion about this in the SquirrelFish mailing list. In short, the booleans store their logical values in the payload part when using JSValue32_64 representation.

Performance:

TEST                   COMPARISON            FROM                 TO             DETAILS

=============================================================================

** TOTAL **:           1.007x as fast    501.7ms +/- 0.3%   498.3ms +/- 0.3%     significant

=============================================================================

  3d:                  ??                 68.7ms +/- 0.9%    68.9ms +/- 1.1%     not conclusive: might be *1.003x as slow*
    cube:              -                  21.5ms +/- 1.8%    21.5ms +/- 1.8%
    morph:             -                  21.9ms +/- 1.0%    21.8ms +/- 1.4%
    raytrace:          ??                 25.3ms +/- 1.4%    25.6ms +/- 2.4%     not conclusive: might be *1.012x as slow*

  access:              -                  59.5ms +/- 0.8%    59.5ms +/- 0.6%
    binary-trees:      -                   7.5ms +/- 6.7%     7.5ms +/- 5.0%
    fannkuch:          -                  24.0ms +/- 0.0%    24.0ms +/- 0.0%
    nbody:             -                  20.0ms +/- 0.0%    20.0ms +/- 0.0%
    nsieve:            -                   8.0ms +/- 0.0%     8.0ms +/- 0.0%

  bitops:              1.031x as fast     33.0ms +/- 0.0%    32.0ms +/- 0.0%     significant
    3bit-bits-in-byte: -                   6.0ms +/- 0.0%     6.0ms +/- 0.0%
    bits-in-byte:      1.111x as fast     10.0ms +/- 0.0%     9.0ms +/- 0.0%     significant
    bitwise-and:       -                   6.0ms +/- 0.0%     6.0ms +/- 0.0%
    nsieve-bits:       -                  11.0ms +/- 0.0%    11.0ms +/- 0.0%

  controlflow:         -                   4.0ms +/- 0.0%     4.0ms +/- 0.0%
    recursive:         -                   4.0ms +/- 0.0%     4.0ms +/- 0.0%

  crypto:              -                  31.1ms +/- 0.7%    31.0ms +/- 0.0%
    aes:               -                  19.1ms +/- 1.2%    19.0ms +/- 0.0%
    md5:               -                   7.0ms +/- 0.0%     7.0ms +/- 0.0%
    sha1:              -                   5.0ms +/- 0.0%     5.0ms +/- 0.0%

  date:                1.031x as fast     62.4ms +/- 1.0%    60.5ms +/- 1.1%     significant
    format-tofte:      1.040x as fast     31.4ms +/- 1.2%    30.2ms +/- 1.5%     significant
    format-xparb:      1.023x as fast     31.0ms +/- 1.5%    30.3ms +/- 1.6%     significant

  math:                -                  51.6ms +/- 0.7%    51.2ms +/- 0.6%
    cordic:            -                  16.0ms +/- 0.0%    16.0ms +/- 0.0%
    partial-sums:      -                  23.1ms +/- 1.0%    23.0ms +/- 0.0%
    spectral-norm:     -                  12.5ms +/- 3.0%    12.2ms +/- 2.5%

  regexp:              1.023x as fast     22.0ms +/- 0.0%    21.5ms +/- 1.8%     significant
    dna:               1.023x as fast     22.0ms +/- 0.0%    21.5ms +/- 1.8%     significant

  string:              ??                169.4ms +/- 0.4%   169.7ms +/- 0.4%     not conclusive: might be *1.002x as slow*
    base64:            ??                 17.0ms +/- 0.0%    17.1ms +/- 1.3%     not conclusive: might be *1.006x as slow*
    fasta:             -                  24.0ms +/- 0.0%    23.7ms +/- 1.5%
    tagcloud:          -                  40.6ms +/- 1.2%    40.2ms +/- 0.7%
    unpack-code:       *1.017x as slow*   65.0ms +/- 0.0%    66.1ms +/- 0.6%     significant
    validate-input:    -                  22.8ms +/- 1.3%    22.6ms +/- 1.6%

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