<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>64022</bug_id>
          
          <creation_ts>2011-07-06 13:07:53 -0700</creation_ts>
          <short_desc>DFG speculative JIT contains a FIXME for rewinding speculative code generation that has already been fixed</short_desc>
          <delta_ts>2011-07-14 12:31:40 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>JavaScriptCore</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>0</everconfirmed>
          <reporter name="Filip Pizlo">fpizlo</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>webkit.review.bot</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>432962</commentid>
    <comment_count>0</comment_count>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2011-07-06 13:07:53 -0700</bug_when>
    <thetext>The DFG speculative JIT may perform a speculation that turns out to be statically false.  In this case, speculative code generation is rolled back.  Despite the fact that this feature is already implemented, there is still a FIXME in DFGSpeculativeJIT.h that indicates that we should implement this already-implemented feature.  Additionally, the same code path also generates a speculation check despite the fact that any code generated by this path will be rewound.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>433003</commentid>
    <comment_count>1</comment_count>
      <attachid>99875</attachid>
    <who name="Filip Pizlo">fpizlo</who>
    <bug_when>2011-07-06 13:49:34 -0700</bug_when>
    <thetext>Created attachment 99875
the patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>437254</commentid>
    <comment_count>2</comment_count>
      <attachid>99875</attachid>
    <who name="WebKit Review Bot">webkit.review.bot</who>
    <bug_when>2011-07-14 12:31:36 -0700</bug_when>
    <thetext>Comment on attachment 99875
the patch

Clearing flags on attachment: 99875

Committed r91022: &lt;http://trac.webkit.org/changeset/91022&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>437255</commentid>
    <comment_count>3</comment_count>
    <who name="WebKit Review Bot">webkit.review.bot</who>
    <bug_when>2011-07-14 12:31:40 -0700</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
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            <attachid>99875</attachid>
            <date>2011-07-06 13:49:34 -0700</date>
            <delta_ts>2011-07-14 12:31:36 -0700</delta_ts>
            <desc>the patch</desc>
            <filename>fixmefixed_patch_1.diff</filename>
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            <attacher name="Filip Pizlo">fpizlo</attacher>
            
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    </bug>

</bugzilla>