JITArithmetic32_64.cpp [plain text]
#include "config.h"
#if ENABLE(JIT)
#if USE(JSVALUE32_64)
#include "JIT.h"
#include "CodeBlock.h"
#include "JITInlines.h"
#include "JITStubs.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Interpreter.h"
#include "JSCInlines.h"
#include "ResultType.h"
#include "SamplingTool.h"
#include "SlowPathCall.h"
namespace JSC {
void JIT::emit_op_negate(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
emitLoad(src, regT1, regT0);
Jump srcNotInt = branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag));
addSlowCase(branchTest32(Zero, regT0, TrustedImm32(0x7fffffff)));
neg32(regT0);
emitStoreInt32(dst, regT0, (dst == src));
Jump end = jump();
srcNotInt.link(this);
addSlowCase(branch32(Above, regT1, TrustedImm32(JSValue::LowestTag)));
xor32(TrustedImm32(1 << 31), regT1);
store32(regT1, tagFor(dst));
if (dst != src)
store32(regT0, payloadFor(dst));
end.link(this);
}
void JIT::emitSlow_op_negate(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_negate);
slowPathCall.call();
}
void JIT::emit_compareAndJump(OpcodeID opcode, int op1, int op2, unsigned target, RelationalCondition condition)
{
JumpList notInt32Op1;
JumpList notInt32Op2;
if (isOperandConstantImmediateChar(op1)) {
emitLoad(op2, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
JumpList failures;
emitLoadCharacterString(regT0, regT0, failures);
addSlowCase(failures);
addJump(branch32(commute(condition), regT0, Imm32(asString(getConstantOperand(op1))->tryGetValue()[0])), target);
return;
}
if (isOperandConstantImmediateChar(op2)) {
emitLoad(op1, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
JumpList failures;
emitLoadCharacterString(regT0, regT0, failures);
addSlowCase(failures);
addJump(branch32(condition, regT0, Imm32(asString(getConstantOperand(op2))->tryGetValue()[0])), target);
return;
}
if (isOperandConstantImmediateInt(op1)) {
emitLoad(op2, regT3, regT2);
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
addJump(branch32(commute(condition), regT2, Imm32(getConstantOperand(op1).asInt32())), target);
} else if (isOperandConstantImmediateInt(op2)) {
emitLoad(op1, regT1, regT0);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addJump(branch32(condition, regT0, Imm32(getConstantOperand(op2).asInt32())), target);
} else {
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
addJump(branch32(condition, regT0, regT2), target);
}
if (!supportsFloatingPoint()) {
addSlowCase(notInt32Op1);
addSlowCase(notInt32Op2);
return;
}
Jump end = jump();
emitBinaryDoubleOp(opcode, target, op1, op2, OperandTypes(), notInt32Op1, notInt32Op2, !isOperandConstantImmediateInt(op1), isOperandConstantImmediateInt(op1) || !isOperandConstantImmediateInt(op2));
end.link(this);
}
void JIT::emit_compareAndJumpSlow(int op1, int op2, unsigned target, DoubleCondition, size_t (JIT_OPERATION *operation)(ExecState*, EncodedJSValue, EncodedJSValue), bool invert, Vector<SlowCaseEntry>::iterator& iter)
{
if (isOperandConstantImmediateChar(op1) || isOperandConstantImmediateChar(op2)) {
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
} else {
if (!supportsFloatingPoint()) {
if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); linkSlowCase(iter); } else {
if (!isOperandConstantImmediateInt(op1)) {
linkSlowCase(iter); linkSlowCase(iter); }
if (isOperandConstantImmediateInt(op1) || !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); }
}
emitLoad(op1, regT1, regT0);
emitLoad(op2, regT3, regT2);
callOperation(operation, regT1, regT0, regT3, regT2);
emitJumpSlowToHot(branchTest32(invert ? Zero : NonZero, returnValueGPR), target);
}
void JIT::emit_op_lshift(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (isOperandConstantImmediateInt(op2)) {
emitLoad(op1, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
lshift32(Imm32(getConstantOperand(op2).asInt32()), regT0);
emitStoreInt32(dst, regT0, dst == op1);
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
if (!isOperandConstantImmediateInt(op1))
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
lshift32(regT2, regT0);
emitStoreInt32(dst, regT0, dst == op1 || dst == op2);
}
void JIT::emitSlow_op_lshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_lshift);
slowPathCall.call();
}
void JIT::emitRightShift(Instruction* currentInstruction, bool isUnsigned)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (isOperandConstantImmediateInt(op2)) {
emitLoad(op1, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
int shift = getConstantOperand(op2).asInt32() & 0x1f;
if (shift) {
if (isUnsigned)
urshift32(Imm32(shift), regT0);
else
rshift32(Imm32(shift), regT0);
}
emitStoreInt32(dst, regT0, dst == op1);
} else {
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
if (!isOperandConstantImmediateInt(op1))
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
if (isUnsigned)
urshift32(regT2, regT0);
else
rshift32(regT2, regT0);
emitStoreInt32(dst, regT0, dst == op1);
}
}
void JIT::emitRightShiftSlowCase(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter, bool isUnsigned)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (isOperandConstantImmediateInt(op2)) {
int shift = getConstantOperand(op2).asInt32() & 0x1f;
linkSlowCase(iter); if (supportsFloatingPointTruncate()) {
JumpList failures;
failures.append(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::LowestTag)));
emitLoadDouble(op1, fpRegT0);
failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0));
if (shift) {
if (isUnsigned)
urshift32(Imm32(shift), regT0);
else
rshift32(Imm32(shift), regT0);
}
move(TrustedImm32(JSValue::Int32Tag), regT1);
emitStoreInt32(dst, regT0, false);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift));
failures.link(this);
}
} else {
if (!isOperandConstantImmediateInt(op1)) {
linkSlowCase(iter); if (supportsFloatingPointTruncate()) {
JumpList failures;
failures.append(branch32(Above, regT1, TrustedImm32(JSValue::LowestTag))); emitLoadDouble(op1, fpRegT0);
failures.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag))); failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0));
if (isUnsigned)
urshift32(regT2, regT0);
else
rshift32(regT2, regT0);
move(TrustedImm32(JSValue::Int32Tag), regT1);
emitStoreInt32(dst, regT0, false);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift));
failures.link(this);
}
}
linkSlowCase(iter); }
JITSlowPathCall slowPathCall(this, currentInstruction, isUnsigned ? slow_path_urshift : slow_path_rshift);
slowPathCall.call();
}
void JIT::emit_op_rshift(Instruction* currentInstruction)
{
emitRightShift(currentInstruction, false);
}
void JIT::emitSlow_op_rshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
emitRightShiftSlowCase(currentInstruction, iter, false);
}
void JIT::emit_op_urshift(Instruction* currentInstruction)
{
emitRightShift(currentInstruction, true);
}
void JIT::emitSlow_op_urshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
emitRightShiftSlowCase(currentInstruction, iter, true);
}
void JIT::emit_op_unsigned(Instruction* currentInstruction)
{
int result = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
emitLoad(op1, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(LessThan, regT0, TrustedImm32(0)));
emitStoreInt32(result, regT0, result == op1);
}
void JIT::emitSlow_op_unsigned(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_unsigned);
slowPathCall.call();
}
void JIT::emit_op_bitand(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
int op;
int32_t constant;
if (getOperandConstantImmediateInt(op1, op2, op, constant)) {
emitLoad(op, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
and32(Imm32(constant), regT0);
emitStoreInt32(dst, regT0, dst == op);
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
and32(regT2, regT0);
emitStoreInt32(dst, regT0, op1 == dst || op2 == dst);
}
void JIT::emitSlow_op_bitand(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_bitand);
slowPathCall.call();
}
void JIT::emit_op_bitor(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
int op;
int32_t constant;
if (getOperandConstantImmediateInt(op1, op2, op, constant)) {
emitLoad(op, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
or32(Imm32(constant), regT0);
emitStoreInt32(dst, regT0, op == dst);
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
or32(regT2, regT0);
emitStoreInt32(dst, regT0, op1 == dst || op2 == dst);
}
void JIT::emitSlow_op_bitor(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_bitor);
slowPathCall.call();
}
void JIT::emit_op_bitxor(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
int op;
int32_t constant;
if (getOperandConstantImmediateInt(op1, op2, op, constant)) {
emitLoad(op, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
xor32(Imm32(constant), regT0);
emitStoreInt32(dst, regT0, op == dst);
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
xor32(regT2, regT0);
emitStoreInt32(dst, regT0, op1 == dst || op2 == dst);
}
void JIT::emitSlow_op_bitxor(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_bitxor);
slowPathCall.call();
}
void JIT::emit_op_inc(Instruction* currentInstruction)
{
int srcDst = currentInstruction[1].u.operand;
emitLoad(srcDst, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branchAdd32(Overflow, TrustedImm32(1), regT0));
emitStoreInt32(srcDst, regT0, true);
}
void JIT::emitSlow_op_inc(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_inc);
slowPathCall.call();
}
void JIT::emit_op_dec(Instruction* currentInstruction)
{
int srcDst = currentInstruction[1].u.operand;
emitLoad(srcDst, regT1, regT0);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branchSub32(Overflow, TrustedImm32(1), regT0));
emitStoreInt32(srcDst, regT0, true);
}
void JIT::emitSlow_op_dec(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter); linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_dec);
slowPathCall.call();
}
void JIT::emit_op_add(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
if (!types.first().mightBeNumber() || !types.second().mightBeNumber()) {
addSlowCase();
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_add);
slowPathCall.call();
return;
}
JumpList notInt32Op1;
JumpList notInt32Op2;
int op;
int32_t constant;
if (getOperandConstantImmediateInt(op1, op2, op, constant)) {
emitAdd32Constant(dst, op, constant, op == op1 ? types.first() : types.second());
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branchAdd32(Overflow, regT2, regT0));
emitStoreInt32(dst, regT0, (op1 == dst || op2 == dst));
if (!supportsFloatingPoint()) {
addSlowCase(notInt32Op1);
addSlowCase(notInt32Op2);
return;
}
Jump end = jump();
emitBinaryDoubleOp(op_add, dst, op1, op2, types, notInt32Op1, notInt32Op2);
end.link(this);
}
void JIT::emitAdd32Constant(int dst, int op, int32_t constant, ResultType opType)
{
emitLoad(op, regT1, regT2);
Jump notInt32 = branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag));
addSlowCase(branchAdd32(Overflow, regT2, Imm32(constant), regT0));
emitStoreInt32(dst, regT0, (op == dst));
if (!supportsFloatingPoint()) {
addSlowCase(notInt32);
return;
}
Jump end = jump();
notInt32.link(this);
if (!opType.definitelyIsNumber())
addSlowCase(branch32(Above, regT1, TrustedImm32(JSValue::LowestTag)));
move(Imm32(constant), regT2);
convertInt32ToDouble(regT2, fpRegT0);
emitLoadDouble(op, fpRegT1);
addDouble(fpRegT1, fpRegT0);
emitStoreDouble(dst, fpRegT0);
end.link(this);
}
void JIT::emitSlow_op_add(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
if (!types.first().mightBeNumber() || !types.second().mightBeNumber()) {
linkDummySlowCase(iter);
return;
}
int op;
int32_t constant;
if (getOperandConstantImmediateInt(op1, op2, op, constant)) {
linkSlowCase(iter);
if (!supportsFloatingPoint())
linkSlowCase(iter); else {
ResultType opType = op == op1 ? types.first() : types.second();
if (!opType.definitelyIsNumber())
linkSlowCase(iter); }
} else {
linkSlowCase(iter);
if (!supportsFloatingPoint()) {
linkSlowCase(iter); linkSlowCase(iter); } else {
if (!types.first().definitelyIsNumber())
linkSlowCase(iter);
if (!types.second().definitelyIsNumber()) {
linkSlowCase(iter); linkSlowCase(iter); }
}
}
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_add);
slowPathCall.call();
}
void JIT::emit_op_sub(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
JumpList notInt32Op1;
JumpList notInt32Op2;
if (isOperandConstantImmediateInt(op2)) {
emitSub32Constant(dst, op1, getConstantOperand(op2).asInt32(), types.first());
return;
}
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branchSub32(Overflow, regT2, regT0));
emitStoreInt32(dst, regT0, (op1 == dst || op2 == dst));
if (!supportsFloatingPoint()) {
addSlowCase(notInt32Op1);
addSlowCase(notInt32Op2);
return;
}
Jump end = jump();
emitBinaryDoubleOp(op_sub, dst, op1, op2, types, notInt32Op1, notInt32Op2);
end.link(this);
}
void JIT::emitSub32Constant(int dst, int op, int32_t constant, ResultType opType)
{
emitLoad(op, regT1, regT0);
Jump notInt32 = branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag));
addSlowCase(branchSub32(Overflow, regT0, Imm32(constant), regT2, regT3));
emitStoreInt32(dst, regT2, (op == dst));
if (!supportsFloatingPoint()) {
addSlowCase(notInt32);
return;
}
Jump end = jump();
notInt32.link(this);
if (!opType.definitelyIsNumber())
addSlowCase(branch32(Above, regT1, TrustedImm32(JSValue::LowestTag)));
move(Imm32(constant), regT2);
convertInt32ToDouble(regT2, fpRegT0);
emitLoadDouble(op, fpRegT1);
subDouble(fpRegT0, fpRegT1);
emitStoreDouble(dst, fpRegT1);
end.link(this);
}
void JIT::emitSlow_op_sub(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
if (isOperandConstantImmediateInt(op2)) {
linkSlowCase(iter);
if (!supportsFloatingPoint() || !types.first().definitelyIsNumber())
linkSlowCase(iter); } else {
linkSlowCase(iter);
if (!supportsFloatingPoint()) {
linkSlowCase(iter); linkSlowCase(iter); } else {
if (!types.first().definitelyIsNumber())
linkSlowCase(iter);
if (!types.second().definitelyIsNumber()) {
linkSlowCase(iter); linkSlowCase(iter); }
}
}
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_sub);
slowPathCall.call();
}
void JIT::emitBinaryDoubleOp(OpcodeID opcodeID, int dst, int op1, int op2, OperandTypes types, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters, bool op2IsInRegisters)
{
JumpList end;
if (!notInt32Op1.empty()) {
notInt32Op1.link(this);
ASSERT(op1IsInRegisters);
if (!types.first().definitelyIsNumber())
addSlowCase(branch32(Above, regT1, TrustedImm32(JSValue::LowestTag)));
if (!op2IsInRegisters)
emitLoad(op2, regT3, regT2);
Jump doubleOp2 = branch32(Below, regT3, TrustedImm32(JSValue::LowestTag));
if (!types.second().definitelyIsNumber())
addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
convertInt32ToDouble(regT2, fpRegT0);
Jump doTheMath = jump();
doubleOp2.link(this);
emitLoadDouble(op2, fpRegT0);
doTheMath.link(this);
switch (opcodeID) {
case op_mul:
emitLoadDouble(op1, fpRegT2);
mulDouble(fpRegT2, fpRegT0);
emitStoreDouble(dst, fpRegT0);
break;
case op_add:
emitLoadDouble(op1, fpRegT2);
addDouble(fpRegT2, fpRegT0);
emitStoreDouble(dst, fpRegT0);
break;
case op_sub:
emitLoadDouble(op1, fpRegT1);
subDouble(fpRegT0, fpRegT1);
emitStoreDouble(dst, fpRegT1);
break;
case op_div: {
emitLoadDouble(op1, fpRegT1);
divDouble(fpRegT0, fpRegT1);
JumpList notInteger;
branchConvertDoubleToInt32(fpRegT1, regT2, notInteger, fpRegT0);
emitStoreInt32(dst, regT2);
Jump isInteger = jump();
notInteger.link(this);
add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->specialFastCaseProfileForBytecodeOffset(m_bytecodeOffset)->m_counter));
emitStoreDouble(dst, fpRegT1);
isInteger.link(this);
break;
}
case op_jless:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleLessThan, fpRegT2, fpRegT0), dst);
break;
case op_jlesseq:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleLessThanOrEqual, fpRegT2, fpRegT0), dst);
break;
case op_jgreater:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleGreaterThan, fpRegT2, fpRegT0), dst);
break;
case op_jgreatereq:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleGreaterThanOrEqual, fpRegT2, fpRegT0), dst);
break;
case op_jnless:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleLessThanOrEqualOrUnordered, fpRegT0, fpRegT2), dst);
break;
case op_jnlesseq:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleLessThanOrUnordered, fpRegT0, fpRegT2), dst);
break;
case op_jngreater:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleGreaterThanOrEqualOrUnordered, fpRegT0, fpRegT2), dst);
break;
case op_jngreatereq:
emitLoadDouble(op1, fpRegT2);
addJump(branchDouble(DoubleGreaterThanOrUnordered, fpRegT0, fpRegT2), dst);
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
if (!notInt32Op2.empty())
end.append(jump());
}
if (!notInt32Op2.empty()) {
notInt32Op2.link(this);
ASSERT(op2IsInRegisters);
if (!op1IsInRegisters)
emitLoadPayload(op1, regT0);
convertInt32ToDouble(regT0, fpRegT0);
if (!types.second().definitelyIsNumber())
addSlowCase(branch32(Above, regT3, TrustedImm32(JSValue::LowestTag)));
switch (opcodeID) {
case op_mul:
emitLoadDouble(op2, fpRegT2);
mulDouble(fpRegT2, fpRegT0);
emitStoreDouble(dst, fpRegT0);
break;
case op_add:
emitLoadDouble(op2, fpRegT2);
addDouble(fpRegT2, fpRegT0);
emitStoreDouble(dst, fpRegT0);
break;
case op_sub:
emitLoadDouble(op2, fpRegT2);
subDouble(fpRegT2, fpRegT0);
emitStoreDouble(dst, fpRegT0);
break;
case op_div: {
emitLoadDouble(op2, fpRegT2);
divDouble(fpRegT2, fpRegT0);
JumpList notInteger;
branchConvertDoubleToInt32(fpRegT0, regT2, notInteger, fpRegT1);
emitStoreInt32(dst, regT2);
Jump isInteger = jump();
notInteger.link(this);
add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->specialFastCaseProfileForBytecodeOffset(m_bytecodeOffset)->m_counter));
emitStoreDouble(dst, fpRegT0);
isInteger.link(this);
break;
}
case op_jless:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleLessThan, fpRegT0, fpRegT1), dst);
break;
case op_jlesseq:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleLessThanOrEqual, fpRegT0, fpRegT1), dst);
break;
case op_jgreater:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleGreaterThan, fpRegT0, fpRegT1), dst);
break;
case op_jgreatereq:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleGreaterThanOrEqual, fpRegT0, fpRegT1), dst);
break;
case op_jnless:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleLessThanOrEqualOrUnordered, fpRegT1, fpRegT0), dst);
break;
case op_jnlesseq:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleLessThanOrUnordered, fpRegT1, fpRegT0), dst);
break;
case op_jngreater:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleGreaterThanOrEqualOrUnordered, fpRegT1, fpRegT0), dst);
break;
case op_jngreatereq:
emitLoadDouble(op2, fpRegT1);
addJump(branchDouble(DoubleGreaterThanOrUnordered, fpRegT1, fpRegT0), dst);
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
}
end.link(this);
}
void JIT::emit_op_mul(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
m_codeBlock->addSpecialFastCaseProfile(m_bytecodeOffset);
JumpList notInt32Op1;
JumpList notInt32Op2;
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
move(regT0, regT3);
addSlowCase(branchMul32(Overflow, regT2, regT0));
addSlowCase(branchTest32(Zero, regT0));
emitStoreInt32(dst, regT0, (op1 == dst || op2 == dst));
if (!supportsFloatingPoint()) {
addSlowCase(notInt32Op1);
addSlowCase(notInt32Op2);
return;
}
Jump end = jump();
emitBinaryDoubleOp(op_mul, dst, op1, op2, types, notInt32Op1, notInt32Op2);
end.link(this);
}
void JIT::emitSlow_op_mul(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
Jump overflow = getSlowCase(iter); linkSlowCase(iter);
Jump negZero = branchOr32(Signed, regT2, regT3);
emitStoreInt32(dst, TrustedImm32(0), (op1 == dst || op2 == dst));
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_mul));
negZero.link(this);
add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->specialFastCaseProfileForBytecodeOffset(m_bytecodeOffset)->m_counter));
overflow.link(this);
if (!supportsFloatingPoint()) {
linkSlowCase(iter); linkSlowCase(iter); }
if (supportsFloatingPoint()) {
if (!types.first().definitelyIsNumber())
linkSlowCase(iter);
if (!types.second().definitelyIsNumber()) {
linkSlowCase(iter); linkSlowCase(iter); }
}
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_mul);
slowPathCall.call();
}
void JIT::emit_op_div(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
m_codeBlock->addSpecialFastCaseProfile(m_bytecodeOffset);
if (!supportsFloatingPoint()) {
addSlowCase(jump());
return;
}
JumpList notInt32Op1;
JumpList notInt32Op2;
JumpList end;
emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
notInt32Op1.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
notInt32Op2.append(branch32(NotEqual, regT3, TrustedImm32(JSValue::Int32Tag)));
convertInt32ToDouble(regT0, fpRegT0);
convertInt32ToDouble(regT2, fpRegT1);
divDouble(fpRegT1, fpRegT0);
JumpList notInteger;
branchConvertDoubleToInt32(fpRegT0, regT2, notInteger, fpRegT1);
emitStoreInt32(dst, regT2);
end.append(jump());
notInteger.link(this);
add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->specialFastCaseProfileForBytecodeOffset(m_bytecodeOffset)->m_counter));
emitStoreDouble(dst, fpRegT0);
end.append(jump());
emitBinaryDoubleOp(op_div, dst, op1, op2, types, notInt32Op1, notInt32Op2);
end.link(this);
}
void JIT::emitSlow_op_div(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand);
if (!supportsFloatingPoint())
linkSlowCase(iter);
else {
if (!types.first().definitelyIsNumber())
linkSlowCase(iter);
if (!types.second().definitelyIsNumber()) {
linkSlowCase(iter); linkSlowCase(iter); }
}
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_div);
slowPathCall.call();
}
void JIT::emit_op_mod(Instruction* currentInstruction)
{
#if CPU(X86) || CPU(X86_64)
int dst = currentInstruction[1].u.operand;
int op1 = currentInstruction[2].u.operand;
int op2 = currentInstruction[3].u.operand;
ASSERT(regT0 == X86Registers::eax);
ASSERT(regT1 == X86Registers::edx);
ASSERT(regT2 == X86Registers::ecx);
ASSERT(regT3 == X86Registers::ebx);
emitLoad2(op1, regT0, regT3, op2, regT1, regT2);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
addSlowCase(branch32(NotEqual, regT0, TrustedImm32(JSValue::Int32Tag)));
move(regT3, regT0);
addSlowCase(branchTest32(Zero, regT2));
Jump denominatorNotNeg1 = branch32(NotEqual, regT2, TrustedImm32(-1));
addSlowCase(branch32(Equal, regT0, TrustedImm32(-2147483647-1)));
denominatorNotNeg1.link(this);
m_assembler.cdq();
m_assembler.idivl_r(regT2);
Jump numeratorPositive = branch32(GreaterThanOrEqual, regT3, TrustedImm32(0));
addSlowCase(branchTest32(Zero, regT1));
numeratorPositive.link(this);
emitStoreInt32(dst, regT1, (op1 == dst || op2 == dst));
#else
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_mod);
slowPathCall.call();
#endif
}
void JIT::emitSlow_op_mod(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
#if CPU(X86) || CPU(X86_64)
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_mod);
slowPathCall.call();
#else
UNUSED_PARAM(currentInstruction);
UNUSED_PARAM(iter);
#endif
}
}
#endif // USE(JSVALUE32_64)
#endif // ENABLE(JIT)