// StackSym::GetIntConstValue
int32
StackSym::GetIntConstValue() const
{
Assert(this->IsIntConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
if (src1->IsIntConstOpnd())
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || defInstr->m_opcode == Js::OpCode::LdC_A_I4 || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
return src1->AsIntConstOpnd()->AsInt32();
}
if (src1->IsAddrOpnd())
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_A || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
IR::AddrOpnd *addr = src1->AsAddrOpnd();
Assert(addr->IsVar());
Js::Var var = src1->AsAddrOpnd()->m_address;
if (Js::TaggedInt::Is(var))
{
return Js::TaggedInt::ToInt32(var);
}
int32 value;
const bool isInt32 = Js::JavascriptNumber::TryGetInt32Value(Js::JavascriptNumber::GetValue(var), &value);
Assert(isInt32);
return value;
}
Assert(src1->IsRegOpnd());
return src1->AsRegOpnd()->m_sym->GetIntConstValue();
}
BailoutConstantValue StackSym::GetConstValueForBailout() const
{
Assert(this->IsConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
return src1->GetConstValue();
}
Js::Var StackSym::GetFloatConstValueAsVar_PostGlobOpt() const
{
Assert(this->IsConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
StackSym * stackSym = nullptr;
if (src1->IsRegOpnd())
{
stackSym = src1->AsRegOpnd()->m_sym;
Assert(!stackSym->m_isEncodedConstant);
if (stackSym->m_isSingleDef)
{
//In ARM constant load is always legalized. Try to get the constant from src def
defInstr = stackSym->m_instrDef;
src1 = defInstr->GetSrc1();
}
}
Assert(this->IsFloatConst() || (stackSym && stackSym->IsFloatConst()));
IR::AddrOpnd *addrOpnd;
if (src1->IsAddrOpnd())
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_A);
addrOpnd = src1->AsAddrOpnd();
}
else
{
Assert(src1->IsFloatConstOpnd());
Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);
addrOpnd = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);
// This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
// post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
defInstr->ReplaceSrc1(addrOpnd);
defInstr->m_opcode = Js::OpCode::Ld_A;
}
const Js::Var address = addrOpnd->m_address;
Assert(Js::JavascriptNumber::Is(address));
return address;
}
IR::Opnd *
StackSym::GetConstOpnd() const
{
Assert(IsConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
if (!src1)
{
#if defined(_M_IX86) || defined(_M_X64)
Assert(defInstr->m_opcode == Js::OpCode::MOVSD_ZERO);
#else
Assert(UNREACHED);
#endif
}
else if (src1->IsIntConstOpnd())
{
Assert(this->IsIntConst());
if (defInstr->m_opcode == Js::OpCode::LdC_A_I4)
{
src1 = IR::AddrOpnd::NewFromNumber(src1->AsIntConstOpnd()->GetValue(), defInstr->m_func);
defInstr->ReplaceSrc1(src1);
defInstr->m_opcode = Js::OpCode::Ld_A;
}
else
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
}
}
else if (src1->IsFloatConstOpnd())
{
Assert(this->IsFloatConst());
Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);
src1 = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);
defInstr->ReplaceSrc1(src1);
defInstr->m_opcode = Js::OpCode::Ld_A;
}
else if (src1->IsAddrOpnd())
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_A || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
}
else if (src1->IsMemRefOpnd())
{
Assert(this->IsFloatConst() || this->IsSimd128Const());
}
else
{
AssertMsg(UNREACHED, "Invalid const value");
}
return src1;
}
void *StackSym::GetConstAddress() const
{
Assert(this->IsConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
StackSym * stackSym = nullptr;
if (src1->IsRegOpnd())
{
stackSym = src1->AsRegOpnd()->m_sym;
Assert(!stackSym->m_isEncodedConstant);
if (stackSym->m_isSingleDef)
{
//In ARM constant load is always legalized. Try to get the constant from src def
defInstr = stackSym->m_instrDef;
src1 = defInstr->GetSrc1();
}
}
Assert(src1->IsAddrOpnd());
Assert(defInstr->m_opcode == Js::OpCode::Ld_A || defInstr->m_opcode == Js::OpCode::LdStr || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
return src1->AsAddrOpnd()->m_address;
}
bool
GlobOpt::Simd128DoTypeSpec(IR::Instr *instr, const Value *src1Val, const Value *src2Val, const Value *dstVal)
{
bool doTypeSpec = true;
// TODO: Some operations require additional opnd constraints (e.g. shuffle/swizzle).
if (Js::IsSimd128Opcode(instr->m_opcode))
{
ThreadContext::SimdFuncSignature simdFuncSignature;
instr->m_func->GetScriptContext()->GetThreadContext()->GetSimdFuncSignatureFromOpcode(instr->m_opcode, simdFuncSignature);
if (!simdFuncSignature.valid)
{
// not implemented yet.
return false;
}
// special handling for Load/Store
if (Js::IsSimd128Load(instr->m_opcode) || Js::IsSimd128Store(instr->m_opcode))
{
return Simd128DoTypeSpecLoadStore(instr, src1Val, src2Val, dstVal, &simdFuncSignature);
}
const uint argCount = simdFuncSignature.argCount;
switch (argCount)
{
case 2:
Assert(src2Val);
doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src2Val->GetValueInfo()->Type(), simdFuncSignature.args[1]) && Simd128ValidateIfLaneIndex(instr, instr->GetSrc2(), 1);
// fall-through
case 1:
Assert(src1Val);
doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src1Val->GetValueInfo()->Type(), simdFuncSignature.args[0]) && Simd128ValidateIfLaneIndex(instr, instr->GetSrc1(), 0);
break;
default:
{
// extended args
Assert(argCount > 2);
// Check if all args have been type specialized.
int arg = argCount - 1;
IR::Instr * eaInstr = GetExtendedArg(instr);
while (arg>=0)
{
Assert(eaInstr);
Assert(eaInstr->m_opcode == Js::OpCode::ExtendArg_A);
ValueType expectedType = simdFuncSignature.args[arg];
IR::Opnd * opnd = eaInstr->GetSrc1();
StackSym * sym = opnd->GetStackSym();
// In Forward Prepass: Check liveness through liveness bits, not IR type, since in prepass no actual type-spec happens.
// In the Forward Pass: Check IRType since Sym can be null, because of const prop.
if (expectedType.IsSimd128Float32x4())
{
if (sym && !IsSimd128F4TypeSpecialized(sym, ¤tBlock->globOptData) ||
!sym && opnd->GetType() != TySimd128F4)
{
return false;
}
}
else if (expectedType.IsSimd128Int32x4())
{
if (sym && !IsSimd128I4TypeSpecialized(sym, ¤tBlock->globOptData) ||
!sym && opnd->GetType() != TySimd128I4)
{
return false;
}
}
else if (expectedType.IsFloat())
{
if (sym && !IsFloat64TypeSpecialized(sym, ¤tBlock->globOptData) ||
!sym&& opnd->GetType() != TyFloat64)
{
return false;
}
}
else if (expectedType.IsInt())
{
if ((sym && !IsInt32TypeSpecialized(sym, ¤tBlock->globOptData) && !currentBlock->globOptData.liveLossyInt32Syms->Test(sym->m_id)) ||
!sym && opnd->GetType() != TyInt32)
{
return false;
}
// Extra check if arg is a lane index
if (!Simd128ValidateIfLaneIndex(instr, opnd, arg))
{
return false;
}
}
else
{
Assert(UNREACHED);
}
eaInstr = GetExtendedArg(eaInstr);
arg--;
}
// all args are type-spec'd
doTypeSpec = true;
}
}
}
else
{
Assert(instr->m_opcode == Js::OpCode::ExtendArg_A);
// For ExtendArg, the expected type is encoded in the dst(link) operand.
doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src1Val->GetValueInfo()->Type(), instr->GetDst()->GetValueType());
}
return doTypeSpec;
}
intptr_t StackSym::GetLiteralConstValue_PostGlobOpt() const
{
Assert(this->IsConst());
IR::Instr *defInstr = this->m_instrDef;
IR::Opnd *src1 = defInstr->GetSrc1();
StackSym * stackSym = nullptr;
if (src1->IsRegOpnd())
{
stackSym = src1->AsRegOpnd()->m_sym;
if (stackSym->m_isEncodedConstant)
{
Assert(!stackSym->m_isSingleDef);
Assert(LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
return stackSym->constantValue;
}
if (stackSym->m_isSingleDef)
{
//In ARM constant load is always legalized. Try to get the constant from src def
defInstr = stackSym->m_instrDef;
src1 = defInstr->GetSrc1();
}
}
if (src1->IsAddrOpnd())
{
Assert(defInstr->m_opcode == Js::OpCode::Ld_A || defInstr->m_opcode == Js::OpCode::LdStr || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
return reinterpret_cast<intptr_t>(src1->AsAddrOpnd()->m_address);
}
if (src1->IsIntConstOpnd())
{
Assert(this->IsIntConst() || (stackSym && stackSym->IsIntConst()));
if (defInstr->m_opcode == Js::OpCode::LdC_A_I4)
{
IR::AddrOpnd *const addrOpnd = IR::AddrOpnd::NewFromNumber(src1->AsIntConstOpnd()->GetValue(), defInstr->m_func);
const Js::Var address = addrOpnd->m_address;
// This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
// post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
defInstr->ReplaceSrc1(addrOpnd);
defInstr->m_opcode = Js::OpCode::Ld_A;
return reinterpret_cast<intptr_t>(address);
}
Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
return src1->AsIntConstOpnd()->GetValue();
}
if (src1->IsFloatConstOpnd())
{
Assert(this->IsFloatConst() || (stackSym && stackSym->IsFloatConst()));
Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);
IR::AddrOpnd *const addrOpnd = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);
const Js::Var address = addrOpnd->m_address;
// This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
// post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
defInstr->ReplaceSrc1(addrOpnd);
defInstr->m_opcode = Js::OpCode::Ld_A;
return reinterpret_cast<intptr_t>(address);
}
AssertMsg(UNREACHED, "Unknown const value");
return 0;
}
