Changeset 222689 in webkit for trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp

Timestamp:

Oct 1, 2017, 10:23:29 AM (8 years ago)

Author:

[email protected]

Message:

Unreviewed, rolling out r222564.
​https://bugs.webkit.org/show_bug.cgi?id=177720

"It regressed JetStream by 2% on iOS caused by a 50%
regression on the bigfib subtest" (Requested by saamyjoon on
#webkit).

Reverted changeset:

"Add Above/Below comparisons for UInt32 patterns"
​https://bugs.webkit.org/show_bug.cgi?id=177281
​http://trac.webkit.org/changeset/222564

File:

• trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp (modified) (2 diffs)

trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp

@@ -143 +143 @@
             else {
                 node->setArithMode(Arith::DoOverflow);
+                node->clearFlags(NodeMustGenerate);
                 node->setResult(enableInt52() ? NodeResultInt52 : NodeResultDouble);
             }
@@ -1594 +1595 @@
         case GetTypedArrayByteOffset: {
             fixEdge<KnownCellUse>(node->child1());
-            break;
-        }
-
-        case CompareBelow:
-        case CompareBelowEq: {
-            fixEdge<Int32Use>(node->child1());
-            fixEdge<Int32Use>(node->child2());
             break;
         }