Title: [240448] trunk/Source/_javascript_Core
Revision
240448
Author
[email protected]
Date
2019-01-24 14:07:33 -0800 (Thu, 24 Jan 2019)

Log Message

Update ARM64EHash
https://bugs.webkit.org/show_bug.cgi?id=193776
<rdar://problem/47526457>

Reviewed by Mark Lam.

See radar for details.

* assembler/AssemblerBuffer.h:
(JSC::ARM64EHash::update):
(JSC::ARM64EHash::finalHash const):

Modified Paths

Diff

Modified: trunk/Source/_javascript_Core/ChangeLog (240447 => 240448)


--- trunk/Source/_javascript_Core/ChangeLog	2019-01-24 21:30:55 UTC (rev 240447)
+++ trunk/Source/_javascript_Core/ChangeLog	2019-01-24 22:07:33 UTC (rev 240448)
@@ -1,5 +1,19 @@
 2019-01-24  Saam Barati  <[email protected]>
 
+        Update ARM64EHash
+        https://bugs.webkit.org/show_bug.cgi?id=193776
+        <rdar://problem/47526457>
+
+        Reviewed by Mark Lam.
+
+        See radar for details.
+
+        * assembler/AssemblerBuffer.h:
+        (JSC::ARM64EHash::update):
+        (JSC::ARM64EHash::finalHash const):
+
+2019-01-24  Saam Barati  <[email protected]>
+
         Object Allocation Sinking phase can move a node that walks the stack into a place where the InlineCallFrame is no longer valid
         https://bugs.webkit.org/show_bug.cgi?id=193751
         <rdar://problem/47280215>

Modified: trunk/Source/_javascript_Core/assembler/AssemblerBuffer.h (240447 => 240448)


--- trunk/Source/_javascript_Core/assembler/AssemblerBuffer.h	2019-01-24 21:30:55 UTC (rev 240447)
+++ trunk/Source/_javascript_Core/assembler/AssemblerBuffer.h	2019-01-24 22:07:33 UTC (rev 240448)
@@ -155,7 +155,7 @@
             uint64_t input = value ^ m_hash;
             uint64_t a = static_cast<uint32_t>(tagInt(input, static_cast<PtrTag>(0)) >> 39);
             uint64_t b = tagInt(input, static_cast<PtrTag>(0xb7e151628aed2a6a)) >> 23;
-            m_hash = a | b;
+            m_hash = a ^ b;
         }
         uint32_t finalHash() const
         {
@@ -162,7 +162,7 @@
             uint64_t hash = m_hash;
             uint64_t a = static_cast<uint32_t>(tagInt(hash, static_cast<PtrTag>(0xbf7158809cf4f3c7)) >> 39);
             uint64_t b = tagInt(hash, static_cast<PtrTag>(0x62e7160f38b4da56)) >> 23;
-            return static_cast<uint32_t>(a | b);
+            return static_cast<uint32_t>(a ^ b);
         }
     private:
         uint32_t m_hash { 0 };
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