#include "config.h"
#include "B3MathExtras.h"
#if ENABLE(B3_JIT)
#include "B3BasicBlockInlines.h"
#include "B3CCallValue.h"
#include "B3Const32Value.h"
#include "B3ConstDoubleValue.h"
#include "B3ConstPtrValue.h"
#include "B3UpsilonValue.h"
#include "B3ValueInlines.h"
#include "MathCommon.h"
namespace JSC { namespace B3 {
std::pair<BasicBlock*, Value*> powDoubleInt32(Procedure& procedure, BasicBlock* start, Origin origin, Value* x, Value* y)
{
BasicBlock* functionCallCase = procedure.addBlock();
BasicBlock* loopPreHeaderCase = procedure.addBlock();
BasicBlock* loopTestForEvenCase = procedure.addBlock();
BasicBlock* loopOdd = procedure.addBlock();
BasicBlock* loopEvenOdd = procedure.addBlock();
BasicBlock* continuation = procedure.addBlock();
Value* shouldGoSlowPath = start->appendNew<Value>(procedure, Above, origin,
y,
start->appendNew<Const32Value>(procedure, origin, maxExponentForIntegerMathPow));
start->appendNew<Value>(procedure, Branch, origin, shouldGoSlowPath);
start->setSuccessors(FrequentedBlock(functionCallCase), FrequentedBlock(loopPreHeaderCase));
Value* yAsDouble = functionCallCase->appendNew<Value>(procedure, IToD, origin, y);
double (*powDouble)(double, double) = pow;
Value* powResult = functionCallCase->appendNew<CCallValue>(
procedure, Double, origin,
functionCallCase->appendNew<ConstPtrValue>(procedure, origin, bitwise_cast<void*>(powDouble)),
x, yAsDouble);
UpsilonValue* powResultUpsilon = functionCallCase->appendNew<UpsilonValue>(procedure, origin, powResult);
functionCallCase->appendNew<Value>(procedure, Jump, origin);
functionCallCase->setSuccessors(FrequentedBlock(continuation));
Value* initialResult = loopPreHeaderCase->appendNew<ConstDoubleValue>(procedure, origin, 1.);
UpsilonValue* initialLoopValue = loopPreHeaderCase->appendNew<UpsilonValue>(procedure, origin, initialResult);
UpsilonValue* initialResultValue = loopPreHeaderCase->appendNew<UpsilonValue>(procedure, origin, initialResult);
UpsilonValue* initialSquaredInput = loopPreHeaderCase->appendNew<UpsilonValue>(procedure, origin, x);
UpsilonValue* initialLoopCounter = loopPreHeaderCase->appendNew<UpsilonValue>(procedure, origin, y);
loopPreHeaderCase->appendNew<Value>(procedure, Jump, origin);
loopPreHeaderCase->setSuccessors(FrequentedBlock(loopTestForEvenCase));
Value* inLoopCounter = loopTestForEvenCase->appendNew<Value>(procedure, Phi, Int32, origin);
Value* inLoopSquaredInput = loopTestForEvenCase->appendNew<Value>(procedure, Phi, Double, origin);
Value* lastCounterBit = loopTestForEvenCase->appendNew<Value>(procedure, BitAnd, origin,
inLoopCounter,
loopTestForEvenCase->appendNew<Const32Value>(procedure, origin, 1));
loopTestForEvenCase->appendNew<Value>(procedure, Branch, origin, lastCounterBit);
loopTestForEvenCase->setSuccessors(FrequentedBlock(loopOdd), FrequentedBlock(loopEvenOdd));
Value* inLoopResult = loopOdd->appendNew<Value>(procedure, Phi, Double, origin);
Value* updatedResult = loopOdd->appendNew<Value>(procedure, Mul, origin, inLoopResult, inLoopSquaredInput);
UpsilonValue* updatedLoopResultUpsilon = loopOdd->appendNew<UpsilonValue>(procedure, origin, updatedResult);
initialLoopValue->setPhi(inLoopResult);
updatedLoopResultUpsilon->setPhi(inLoopResult);
UpsilonValue* updatedLoopResult = loopOdd->appendNew<UpsilonValue>(procedure, origin, updatedResult);
loopOdd->appendNew<Value>(procedure, Jump, origin);
loopOdd->setSuccessors(FrequentedBlock(loopEvenOdd));
Value* squaredInput = loopEvenOdd->appendNew<Value>(procedure, Mul, origin, inLoopSquaredInput, inLoopSquaredInput);
UpsilonValue* squaredInputUpsilon = loopEvenOdd->appendNew<UpsilonValue>(procedure, origin, squaredInput);
initialSquaredInput->setPhi(inLoopSquaredInput);
squaredInputUpsilon->setPhi(inLoopSquaredInput);
Value* updatedCounter = loopEvenOdd->appendNew<Value>(procedure, ZShr, origin,
inLoopCounter,
loopEvenOdd->appendNew<Const32Value>(procedure, origin, 1));
UpsilonValue* updatedCounterUpsilon = loopEvenOdd->appendNew<UpsilonValue>(procedure, origin, updatedCounter);
initialLoopCounter->setPhi(inLoopCounter);
updatedCounterUpsilon->setPhi(inLoopCounter);
loopEvenOdd->appendNew<Value>(procedure, Branch, origin, updatedCounter);
loopEvenOdd->setSuccessors(FrequentedBlock(loopTestForEvenCase), FrequentedBlock(continuation));
Value* finalResultPhi = continuation->appendNew<Value>(procedure, Phi, Double, origin);
powResultUpsilon->setPhi(finalResultPhi);
initialResultValue->setPhi(finalResultPhi);
updatedLoopResult->setPhi(finalResultPhi);
return std::make_pair(continuation, finalResultPhi);
}
} }
#endif // ENABLE(B3_JIT)