Changeset 166885 in webkit for trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp

Timestamp:

Apr 7, 2014, 1:45:58 PM (11 years ago)

Author:

[email protected]

Message:

Make it possible to disable some of the FTL's more interesting features
​https://bugs.webkit.org/show_bug.cgi?id=131312

Reviewed by Mark Hahnenberg.

• dfg/DFGByteCodeParser.cpp:

(JSC::DFG::ByteCodeParser::handleGetById):
(JSC::DFG::ByteCodeParser::handlePutById):
(JSC::DFG::ByteCodeParser::parse):

• runtime/Options.h:

File:

• trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp (modified) (3 diffs)

trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp

@@ -1895 +1895 @@
     
     if (getByIdStatus.numVariants() > 1) {
-        if (!isFTL(m_graph.m_plan.mode)) {
+        if (!isFTL(m_graph.m_plan.mode) || !Options::enablePolymorphicAccessInlining()) {
             set(VirtualRegister(destinationOperand),
                 addToGraph(GetById, OpInfo(identifierNumber), OpInfo(prediction), base));
@@ -1980 +1980 @@
     
     if (putByIdStatus.numVariants() > 1) {
-        if (!isFTL(m_graph.m_plan.mode) || putByIdStatus.makesCalls()) {
+        if (!isFTL(m_graph.m_plan.mode) || putByIdStatus.makesCalls()
+            || !Options::enablePolymorphicAccessInlining()) {
             emitPutById(base, identifierNumber, value, putByIdStatus, isDirect);
             return;
@@ -3620 +3621 @@
     
     m_dfgCodeBlock = m_graph.m_plan.profiledDFGCodeBlock.get();
-    if (isFTL(m_graph.m_plan.mode) && m_dfgCodeBlock) {
+    if (isFTL(m_graph.m_plan.mode) && m_dfgCodeBlock
+        && Options::enablePolyvariantDevirtualization()) {
         if (Options::enablePolyvariantCallInlining())
             CallLinkStatus::computeDFGStatuses(m_dfgCodeBlock, m_callContextMap);