Changeset 96983 in webkit for trunk/Source/JavaScriptCore/ChangeLog

Timestamp:

Oct 7, 2011, 3:11:51 PM (14 years ago)

Author:

[email protected]

Message:

Support string indexing in the DFG
​https://bugs.webkit.org/show_bug.cgi?id=69671

Reviewed by Gavin Barraclough.

Emit code to support inline indexing of strings

• dfg/DFGSpeculativeJIT.cpp:

(JSC::DFG::SpeculativeJIT::compileGetByValOnString):

Shared code to perform string indexing.

• dfg/DFGSpeculativeJIT.h:
• dfg/DFGSpeculativeJIT32_64.cpp:

(JSC::DFG::SpeculativeJIT::compile):

• dfg/DFGSpeculativeJIT64.cpp:

(JSC::DFG::SpeculativeJIT::compile):

Use compileGetByValOnString if we predict that the base object
is a string in GetByVal.

• runtime/JSString.h:

(JSC::JSString::offsetOfFiberCount):
(JSC::JSString::offsetOfValue):

File:

• trunk/Source/JavaScriptCore/ChangeLog (modified) (1 diff)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2011-10-07  Oliver Hunt  <[email protected]>
+
+        Support string indexing in the DFG
+        https://bugs.webkit.org/show_bug.cgi?id=69671
+
+        Reviewed by Gavin Barraclough.
+
+        Emit code to support inline indexing of strings 
+
+        * dfg/DFGSpeculativeJIT.cpp:
+        (JSC::DFG::SpeculativeJIT::compileGetByValOnString):
+            Shared code to perform string indexing.
+        * dfg/DFGSpeculativeJIT.h:
+        * dfg/DFGSpeculativeJIT32_64.cpp:
+        (JSC::DFG::SpeculativeJIT::compile):
+        * dfg/DFGSpeculativeJIT64.cpp:
+        (JSC::DFG::SpeculativeJIT::compile):
+            Use compileGetByValOnString if we predict that the base object
+            is a string in GetByVal.
+        * runtime/JSString.h:
+        (JSC::JSString::offsetOfFiberCount):
+        (JSC::JSString::offsetOfValue):
+
 2011-10-07  Filip Pizlo  <[email protected]>