static bool isValidRegisterForLiveness(CodeBlock* codeBlock, int operand)
{
if (codeBlock->isConstantRegisterIndex(operand))
return false;
VirtualRegister virtualReg(operand);
return virtualReg.isLocal();
}
static bool isValidRegisterForLiveness(CodeBlock* codeBlock, int operand)
{
VirtualRegister virtualReg(operand);
return !codeBlock->isConstantRegisterIndex(operand) // Don't care about constants.
&& virtualReg.isLocal() // Don't care about arguments.
&& (!numberOfCapturedVariables(codeBlock) // If we have no captured variables, we're good to go.
|| (virtualReg.offset() > captureStart(codeBlock) || (virtualReg.offset() <= captureEnd(codeBlock))));
}
static void setForOperand(CodeBlock* codeBlock, FastBitVector& bits, int operand)
{
ASSERT(isValidRegisterForLiveness(codeBlock, operand));
VirtualRegister virtualReg(operand);
if (virtualReg.offset() > captureStart(codeBlock))
bits.set(virtualReg.toLocal());
else
bits.set(virtualReg.toLocal() - numberOfCapturedVariables(codeBlock));
}
