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;
}
}
void storeCodeOrigin(State& state, CCallHelpers& jit, CodeOrigin codeOrigin)
{
if (!codeOrigin.isSet())
return;
unsigned index = state.jitCode->common.addCodeOrigin(codeOrigin);
unsigned locationBits = CallFrame::Location::encodeAsCodeOriginIndex(index);
jit.store32(
CCallHelpers::TrustedImm32(locationBits),
CCallHelpers::tagFor(static_cast<VirtualRegister>(JSStack::ArgumentCount)));
}
OriginStack::OriginStack(Database& database, CodeBlock* codeBlock, const CodeOrigin& codeOrigin)
{
Vector<CodeOrigin> stack = codeOrigin.inlineStack();
append(Origin(database, codeBlock, stack[0].bytecodeIndex));
for (unsigned i = 1; i < stack.size(); ++i) {
append(Origin(
database.ensureBytecodesFor(stack[i].inlineCallFrame->baselineCodeBlock.get()),
stack[i].bytecodeIndex));
}
}