Modified: trunk/Source/_javascript_Core/ftl/FTLCapabilities.cpp (196651 => 196652)
--- trunk/Source/_javascript_Core/ftl/FTLCapabilities.cpp 2016-02-16 20:58:56 UTC (rev 196651)
+++ trunk/Source/_javascript_Core/ftl/FTLCapabilities.cpp 2016-02-16 21:12:04 UTC (rev 196652)
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2013-2015 Apple Inc. All rights reserved.
+ * Copyright (C) 2013-2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -72,6 +72,7 @@
case NewObject:
case NewArray:
case NewArrayBuffer:
+ case NewTypedArray:
case GetByOffset:
case GetGetterSetterByOffset:
case GetGetter:
Modified: trunk/Source/_javascript_Core/ftl/FTLLowerDFGToLLVM.cpp (196651 => 196652)
--- trunk/Source/_javascript_Core/ftl/FTLLowerDFGToLLVM.cpp 2016-02-16 20:58:56 UTC (rev 196651)
+++ trunk/Source/_javascript_Core/ftl/FTLLowerDFGToLLVM.cpp 2016-02-16 21:12:04 UTC (rev 196652)
@@ -845,6 +845,9 @@
case NewArrayWithSize:
compileNewArrayWithSize();
break;
+ case NewTypedArray:
+ compileNewTypedArray();
+ break;
case GetTypedArrayByteOffset:
compileGetTypedArrayByteOffset();
break;
@@ -4090,8 +4093,7 @@
LValue butterfly = m_out.sub(endOfStorage, payloadSize);
- LValue object = allocateObject<JSArray>(
- structure, butterfly, failCase);
+ LValue object = allocateObject<JSArray>(structure, butterfly, failCase);
m_out.store32(publicLength, butterfly, m_heaps.Butterfly_publicLength);
m_out.store32(vectorLength, butterfly, m_heaps.Butterfly_vectorLength);
@@ -4159,6 +4161,63 @@
m_out.constIntPtr(structure));
setJSValue(vmCall(m_out.int64, m_out.operation(operationNewArrayWithSize), m_callFrame, structureValue, publicLength));
}
+
+ void compileNewTypedArray()
+ {
+ JSGlobalObject* globalObject = m_graph.globalObjectFor(m_node->origin.semantic);
+ TypedArrayType type = m_node->typedArrayType();
+ Structure* structure = globalObject->typedArrayStructure(type);
+
+ LValue size = lowInt32(m_node->child1());
+
+ LBasicBlock smallEnoughCase = FTL_NEW_BLOCK(m_out, ("NewTypedArray small enough case"));
+ LBasicBlock nonZeroCase = FTL_NEW_BLOCK(m_out, ("NewTypedArray non-zero case"));
+ LBasicBlock slowCase = FTL_NEW_BLOCK(m_out, ("NewTypedArray slow case"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("NewTypedArray continuation"));
+
+ m_out.branch(
+ m_out.above(size, m_out.constInt32(JSArrayBufferView::fastSizeLimit)),
+ rarely(slowCase), usually(smallEnoughCase));
+
+ LBasicBlock lastNext = m_out.appendTo(smallEnoughCase, nonZeroCase);
+
+ m_out.branch(m_out.notZero32(size), usually(nonZeroCase), rarely(slowCase));
+
+ m_out.appendTo(nonZeroCase, slowCase);
+
+ LValue byteSize = m_out.shl(m_out.zeroExtPtr(size), m_out.constInt32(logElementSize(type)));
+ if (elementSize(type) < 8) {
+ byteSize = m_out.bitAnd(
+ m_out.add(byteSize, m_out.constIntPtr(7)),
+ m_out.constIntPtr(~static_cast<intptr_t>(7)));
+ }
+
+ LValue storage = allocateBasicStorage(byteSize, slowCase);
+
+ LValue fastResultValue = allocateObject<JSArrayBufferView>(structure, storage, slowCase);
+
+ m_out.storePtr(storage, fastResultValue, m_heaps.JSArrayBufferView_vector);
+ m_out.store32(size, fastResultValue, m_heaps.JSArrayBufferView_length);
+ m_out.store32(m_out.constInt32(FastTypedArray), fastResultValue, m_heaps.JSArrayBufferView_mode);
+
+ ValueFromBlock fastResult = m_out.anchor(fastResultValue);
+ m_out.jump(continuation);
+
+ m_out.appendTo(slowCase, continuation);
+
+ LValue slowResultValue = lazySlowPath(
+ [=] (const Vector<Location>& locations) -> RefPtr<LazySlowPath::Generator> {
+ return createLazyCallGenerator(
+ operationNewTypedArrayWithSizeForType(type), locations[0].directGPR(),
+ CCallHelpers::TrustedImmPtr(structure), locations[1].directGPR());
+ },
+ size);
+ ValueFromBlock slowResult = m_out.anchor(slowResultValue);
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setJSValue(m_out.phi(m_out.intPtr, fastResult, slowResult));
+ }
void compileAllocatePropertyStorage()
{
@@ -7932,6 +7991,11 @@
return m_out.sub(
m_out.loadPtr(m_out.absolute(&allocator.m_currentPayloadEnd)), newRemaining);
}
+
+ LValue allocateBasicStorage(LValue size, LBasicBlock slowPath)
+ {
+ return m_out.sub(allocateBasicStorageAndGetEnd(size, slowPath), size);
+ }
LValue allocateObject(Structure* structure)
{
