void
CodeGeneratorX64::visitAsmJSStoreHeap(LAsmJSStoreHeap *ins)
{
MAsmJSStoreHeap *mir = ins->mir();
Scalar::Type vt = mir->accessType();
const LAllocation *ptr = ins->ptr();
Operand dstAddr(HeapReg);
if (Scalar::isSimdType(vt))
return emitSimdStore(ins);
if (ptr->isConstant()) {
int32_t ptrImm = ptr->toConstant()->toInt32();
MOZ_ASSERT(ptrImm >= 0);
dstAddr = Operand(HeapReg, ptrImm);
} else {
dstAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
}
memoryBarrier(ins->mir()->barrierBefore());
Label rejoin;
uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
if (mir->needsBoundsCheck()) {
CodeOffsetLabel cmp = masm.cmp32WithPatch(ToRegister(ptr), Imm32(0));
masm.j(Assembler::AboveOrEqual, &rejoin);
maybeCmpOffset = cmp.offset();
}
uint32_t before = masm.size();
if (ins->value()->isConstant()) {
switch (vt) {
case Scalar::Int8:
case Scalar::Uint8: masm.movb(Imm32(ToInt32(ins->value())), dstAddr); break;
case Scalar::Int16:
case Scalar::Uint16: masm.movw(Imm32(ToInt32(ins->value())), dstAddr); break;
case Scalar::Int32:
case Scalar::Uint32: masm.movl(Imm32(ToInt32(ins->value())), dstAddr); break;
case Scalar::Float32:
case Scalar::Float64:
case Scalar::Float32x4:
case Scalar::Int32x4:
case Scalar::Uint8Clamped:
case Scalar::MaxTypedArrayViewType:
MOZ_CRASH("unexpected array type");
}
} else {
switch (vt) {
case Scalar::Int8:
case Scalar::Uint8: masm.movb(ToRegister(ins->value()), dstAddr); break;
case Scalar::Int16:
case Scalar::Uint16: masm.movw(ToRegister(ins->value()), dstAddr); break;
case Scalar::Int32:
case Scalar::Uint32: masm.movl(ToRegister(ins->value()), dstAddr); break;
case Scalar::Float32: masm.storeFloat32(ToFloatRegister(ins->value()), dstAddr); break;
case Scalar::Float64: masm.storeDouble(ToFloatRegister(ins->value()), dstAddr); break;
case Scalar::Float32x4:
case Scalar::Int32x4: MOZ_CRASH("SIMD stores must be handled in emitSimdStore");
case Scalar::Uint8Clamped:
case Scalar::MaxTypedArrayViewType:
MOZ_CRASH("unexpected array type");
}
}
uint32_t after = masm.size();
verifyHeapAccessDisassembly(before, after, /*isLoad=*/false, vt, dstAddr, *ins->value());
if (rejoin.used())
masm.bind(&rejoin);
memoryBarrier(ins->mir()->barrierAfter());
masm.append(AsmJSHeapAccess(before, after, vt, maybeCmpOffset));
}
bool
CodeGeneratorX64::visitAsmJSStoreHeap(LAsmJSStoreHeap *ins)
{
MAsmJSStoreHeap *mir = ins->mir();
AsmJSHeapAccess::ViewType vt = mir->viewType();
const LAllocation *ptr = ins->ptr();
Operand dstAddr(HeapReg);
if (ptr->isConstant()) {
int32_t ptrImm = ptr->toConstant()->toInt32();
MOZ_ASSERT(ptrImm >= 0);
dstAddr = Operand(HeapReg, ptrImm);
} else {
dstAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
}
memoryBarrier(ins->mir()->barrierBefore());
Label rejoin;
uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
if (mir->needsBoundsCheck()) {
CodeOffsetLabel cmp = masm.cmplWithPatch(ToRegister(ptr), Imm32(0));
masm.j(Assembler::AboveOrEqual, &rejoin);
maybeCmpOffset = cmp.offset();
}
uint32_t before = masm.size();
if (ins->value()->isConstant()) {
switch (vt) {
case AsmJSHeapAccess::Int8:
case AsmJSHeapAccess::Uint8: masm.movb(Imm32(ToInt32(ins->value())), dstAddr); break;
case AsmJSHeapAccess::Int16:
case AsmJSHeapAccess::Uint16: masm.movw(Imm32(ToInt32(ins->value())), dstAddr); break;
case AsmJSHeapAccess::Int32:
case AsmJSHeapAccess::Uint32: masm.movl(Imm32(ToInt32(ins->value())), dstAddr); break;
case AsmJSHeapAccess::Float32:
case AsmJSHeapAccess::Float64:
case AsmJSHeapAccess::Float32x4:
case AsmJSHeapAccess::Int32x4:
case AsmJSHeapAccess::Uint8Clamped: MOZ_CRASH("unexpected array type");
}
} else {
switch (vt) {
case AsmJSHeapAccess::Int8:
case AsmJSHeapAccess::Uint8: masm.movb(ToRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Int16:
case AsmJSHeapAccess::Uint16: masm.movw(ToRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Int32:
case AsmJSHeapAccess::Uint32: masm.movl(ToRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Float32: masm.storeFloat32(ToFloatRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Float64: masm.storeDouble(ToFloatRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Float32x4: masm.storeUnalignedFloat32x4(ToFloatRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Int32x4: masm.storeUnalignedInt32x4(ToFloatRegister(ins->value()), dstAddr); break;
case AsmJSHeapAccess::Uint8Clamped: MOZ_CRASH("unexpected array type");
}
}
uint32_t after = masm.size();
if (rejoin.used())
masm.bind(&rejoin);
memoryBarrier(ins->mir()->barrierAfter());
masm.append(AsmJSHeapAccess(before, after, vt, maybeCmpOffset));
return true;
}
