X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/93a3786624b2768d89bfa27e46598dc64e2fb70a..ed1e77d3adeb83d26fd1dfb16dd84cabdcefd250:/bytecode/CodeOrigin.cpp?ds=sidebyside

diff --git a/bytecode/CodeOrigin.cpp b/bytecode/CodeOrigin.cpp
index 52bc2bf..15f7591 100644
--- a/bytecode/CodeOrigin.cpp
+++ b/bytecode/CodeOrigin.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -29,7 +29,7 @@
 #include "CallFrame.h"
 #include "CodeBlock.h"
 #include "Executable.h"
-#include "Operations.h"
+#include "JSCInlines.h"
 
 namespace JSC {
 
@@ -45,7 +45,64 @@ unsigned CodeOrigin::inlineDepth() const
 {
     return inlineDepthForCallFrame(inlineCallFrame);
 }
+
+bool CodeOrigin::isApproximatelyEqualTo(const CodeOrigin& other) const
+{
+    CodeOrigin a = *this;
+    CodeOrigin b = other;
+
+    if (!a.isSet())
+        return !b.isSet();
+    if (!b.isSet())
+        return false;
+    
+    if (a.isHashTableDeletedValue())
+        return b.isHashTableDeletedValue();
+    if (b.isHashTableDeletedValue())
+        return false;
+    
+    for (;;) {
+        ASSERT(a.isSet());
+        ASSERT(b.isSet());
+        
+        if (a.bytecodeIndex != b.bytecodeIndex)
+            return false;
+        
+        if ((!!a.inlineCallFrame) != (!!b.inlineCallFrame))
+            return false;
+        
+        if (!a.inlineCallFrame)
+            return true;
+        
+        if (a.inlineCallFrame->executable.get() != b.inlineCallFrame->executable.get())
+            return false;
+        
+        a = a.inlineCallFrame->caller;
+        b = b.inlineCallFrame->caller;
+    }
+}
+
+unsigned CodeOrigin::approximateHash() const
+{
+    if (!isSet())
+        return 0;
+    if (isHashTableDeletedValue())
+        return 1;
     
+    unsigned result = 2;
+    CodeOrigin codeOrigin = *this;
+    for (;;) {
+        result += codeOrigin.bytecodeIndex;
+        
+        if (!codeOrigin.inlineCallFrame)
+            return result;
+        
+        result += WTF::PtrHash<JSCell*>::hash(codeOrigin.inlineCallFrame->executable.get());
+        
+        codeOrigin = codeOrigin.inlineCallFrame->caller;
+    }
+}
+
 Vector<CodeOrigin> CodeOrigin::inlineStack() const
 {
     Vector<CodeOrigin> result(inlineDepth());
@@ -59,6 +116,11 @@ Vector<CodeOrigin> CodeOrigin::inlineStack() const
 
 void CodeOrigin::dump(PrintStream& out) const
 {
+    if (!isSet()) {
+        out.print("<none>");
+        return;
+    }
+    
     Vector<CodeOrigin> stack = inlineStack();
     for (unsigned i = 0; i < stack.size(); ++i) {
         if (i)
@@ -66,7 +128,7 @@ void CodeOrigin::dump(PrintStream& out) const
         
         if (InlineCallFrame* frame = stack[i].inlineCallFrame) {
             out.print(frame->briefFunctionInformation(), ":<", RawPointer(frame->executable.get()), "> ");
-            if (frame->isClosureCall())
+            if (frame->isClosureCall)
                 out.print("(closure) ");
         }
         
@@ -74,22 +136,52 @@ void CodeOrigin::dump(PrintStream& out) const
     }
 }
 
+void CodeOrigin::dumpInContext(PrintStream& out, DumpContext*) const
+{
+    dump(out);
+}
+
+JSFunction* InlineCallFrame::calleeConstant() const
+{
+    if (calleeRecovery.isConstant())
+        return jsCast<JSFunction*>(calleeRecovery.constant());
+    return nullptr;
+}
+
+void InlineCallFrame::visitAggregate(SlotVisitor& visitor)
+{
+    // FIXME: This is an antipattern for two reasons. References introduced by the DFG
+    // that aren't in the original CodeBlock being compiled should be weakly referenced.
+    // Inline call frames aren't in the original CodeBlock, so they qualify as weak. Also,
+    // those weak references should already be tracked in the DFG as weak FrozenValues. So,
+    // there is probably no need for this. We already have assertions that this should be
+    // unnecessary. Finally, just marking the executable and not anything else in the inline
+    // call frame is almost certainly insufficient for what this method thought it was going
+    // to accomplish.
+    // https://bugs.webkit.org/show_bug.cgi?id=146613
+    visitor.append(&executable);
+}
+
 JSFunction* InlineCallFrame::calleeForCallFrame(ExecState* exec) const
 {
-    if (!isClosureCall())
-        return callee.get();
-    
-    return jsCast<JSFunction*>((exec + stackOffset)->callee());
+    return jsCast<JSFunction*>(calleeRecovery.recover(exec));
 }
 
 CodeBlockHash InlineCallFrame::hash() const
 {
-    return executable->hashFor(specializationKind());
+    return jsCast<FunctionExecutable*>(executable.get())->codeBlockFor(
+        specializationKind())->hash();
+}
+
+CString InlineCallFrame::hashAsStringIfPossible() const
+{
+    return jsCast<FunctionExecutable*>(executable.get())->codeBlockFor(
+        specializationKind())->hashAsStringIfPossible();
 }
 
-String InlineCallFrame::inferredName() const
+CString InlineCallFrame::inferredName() const
 {
-    return jsCast<FunctionExecutable*>(executable.get())->inferredName().string();
+    return jsCast<FunctionExecutable*>(executable.get())->inferredName().utf8();
 }
 
 CodeBlock* InlineCallFrame::baselineCodeBlock() const
@@ -99,20 +191,57 @@ CodeBlock* InlineCallFrame::baselineCodeBlock() const
 
 void InlineCallFrame::dumpBriefFunctionInformation(PrintStream& out) const
 {
-    out.print(inferredName(), "#", hash());
+    out.print(inferredName(), "#", hashAsStringIfPossible());
 }
 
-void InlineCallFrame::dump(PrintStream& out) const
+void InlineCallFrame::dumpInContext(PrintStream& out, DumpContext* context) const
 {
-    out.print(briefFunctionInformation(), ":<", RawPointer(executable.get()), ", bc#", caller.bytecodeIndex, ", ", specializationKind());
-    if (callee)
-        out.print(", known callee: ", JSValue(callee.get()));
-    else
+    out.print(briefFunctionInformation(), ":<", RawPointer(executable.get()));
+    if (executable->isStrictMode())
+        out.print(" (StrictMode)");
+    out.print(", bc#", caller.bytecodeIndex, ", ", kind);
+    if (isClosureCall)
         out.print(", closure call");
+    else
+        out.print(", known callee: ", inContext(calleeRecovery.constant(), context));
     out.print(", numArgs+this = ", arguments.size());
-    out.print(", stack >= r", stackOffset);
-    out.print(">");
+    out.print(", stackOffset = ", stackOffset);
+    out.print(" (", virtualRegisterForLocal(0), " maps to ", virtualRegisterForLocal(0) + stackOffset, ")>");
+}
+
+void InlineCallFrame::dump(PrintStream& out) const
+{
+    dumpInContext(out, 0);
 }
 
 } // namespace JSC
 
+namespace WTF {
+
+void printInternal(PrintStream& out, JSC::InlineCallFrame::Kind kind)
+{
+    switch (kind) {
+    case JSC::InlineCallFrame::Call:
+        out.print("Call");
+        return;
+    case JSC::InlineCallFrame::Construct:
+        out.print("Construct");
+        return;
+    case JSC::InlineCallFrame::CallVarargs:
+        out.print("CallVarargs");
+        return;
+    case JSC::InlineCallFrame::ConstructVarargs:
+        out.print("ConstructVarargs");
+        return;
+    case JSC::InlineCallFrame::GetterCall:
+        out.print("GetterCall");
+        return;
+    case JSC::InlineCallFrame::SetterCall:
+        out.print("SetterCall");
+        return;
+    }
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+} // namespace WTF
+