<?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>215286</bug_id>
          
          <creation_ts>2020-08-07 11:59:53 -0700</creation_ts>
          <short_desc>DFG should always run CFG Simplification after Constant Folding.</short_desc>
          <delta_ts>2020-08-24 21:32:18 -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>New Bugs</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Keith Miller">keith_miller</reporter>
          <assigned_to name="Keith Miller">keith_miller</assigned_to>
          <cc>ews-watchlist</cc>
    
    <cc>fpizlo</cc>
    
    <cc>mark.lam</cc>
    
    <cc>msaboff</cc>
    
    <cc>rmorisset</cc>
    
    <cc>saam</cc>
    
    <cc>tzagallo</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1678679</commentid>
    <comment_count>0</comment_count>
    <who name="Keith Miller">keith_miller</who>
    <bug_when>2020-08-07 11:59:53 -0700</bug_when>
    <thetext>DFG should always run CFG Simplification after Constant Folding.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1678683</commentid>
    <comment_count>1</comment_count>
      <attachid>406199</attachid>
    <who name="Keith Miller">keith_miller</who>
    <bug_when>2020-08-07 12:07:37 -0700</bug_when>
    <thetext>Created attachment 406199
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679019</commentid>
    <comment_count>2</comment_count>
      <attachid>406199</attachid>
    <who name="Robin Morisset">rmorisset</who>
    <bug_when>2020-08-10 00:24:40 -0700</bug_when>
    <thetext>Comment on attachment 406199
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=406199&amp;action=review

&gt; Source/JavaScriptCore/dfg/DFGCFGSimplificationPhase.cpp:-52
&gt; -        // FIXME: We should make this work in SSA. https://bugs.webkit.org/show_bug.cgi?id=148260

If this is no longer a FIXME, please close the corresponding bug on bugzilla.

&gt; Source/JavaScriptCore/dfg/DFGValidate.cpp:-814
&gt; -            bool didSeeExitOK = false;

Why did you remove this validation? Can you explain it in the Changelog if it is on purpose?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679085</commentid>
    <comment_count>3</comment_count>
    <who name="Keith Miller">keith_miller</who>
    <bug_when>2020-08-10 09:54:18 -0700</bug_when>
    <thetext>*** Bug 148260 has been marked as a duplicate of this bug. ***</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679089</commentid>
    <comment_count>4</comment_count>
      <attachid>406199</attachid>
    <who name="Keith Miller">keith_miller</who>
    <bug_when>2020-08-10 09:56:18 -0700</bug_when>
    <thetext>Comment on attachment 406199
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=406199&amp;action=review

&gt;&gt; Source/JavaScriptCore/dfg/DFGCFGSimplificationPhase.cpp:-52
&gt;&gt; -        // FIXME: We should make this work in SSA. https://bugs.webkit.org/show_bug.cgi?id=148260
&gt; 
&gt; If this is no longer a FIXME, please close the corresponding bug on bugzilla.

Done.

&gt;&gt; Source/JavaScriptCore/dfg/DFGValidate.cpp:-814
&gt;&gt; -            bool didSeeExitOK = false;
&gt; 
&gt; Why did you remove this validation? Can you explain it in the Changelog if it is on purpose?

Because it&apos;s unnecessary and fails when you merge two blocks where the latter block has a Phi. I&apos;ll add a comment to the ChangeLog.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679110</commentid>
    <comment_count>5</comment_count>
      <attachid>406310</attachid>
    <who name="Keith Miller">keith_miller</who>
    <bug_when>2020-08-10 10:37:35 -0700</bug_when>
    <thetext>Created attachment 406310
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1680395</commentid>
    <comment_count>6</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2020-08-14 12:00:21 -0700</bug_when>
    <thetext>&lt;rdar://problem/67087402&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1682563</commentid>
    <comment_count>7</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2020-08-24 21:32:17 -0700</bug_when>
    <thetext>Committed r266101: &lt;https://trac.webkit.org/changeset/266101&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 406310.</thetext>
  </long_desc>
      
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            <delta_ts>2020-08-10 10:37:34 -0700</delta_ts>
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            <date>2020-08-10 10:37:35 -0700</date>
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</data>

          </attachment>
      

    </bug>

</bugzilla>