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https://github.com/c64scene-ar/llvm-6502.git
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All constant-evaluation code now unified into
TargetInstrInfo::ConvertConstantToIntType(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7390 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -87,44 +87,21 @@ ChooseRegOrImmed(Value* val,
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getImmedValue = 0;
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// To use reg or immed, constant needs to be integer, bool, or a NULL pointer
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Constant *CPV = dyn_cast<Constant>(val);
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if (CPV == NULL
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|| CPV->isConstantExpr()
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|| (! CPV->getType()->isIntegral() &&
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! (isa<PointerType>(CPV->getType()) && CPV->isNullValue())))
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// TargetInstrInfo::ConvertConstantToIntType() does the right conversions:
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bool isValidConstant;
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uint64_t valueToUse =
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target.getInstrInfo().ConvertConstantToIntType(target, val, val->getType(),
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isValidConstant);
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if (! isValidConstant)
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return MachineOperand::MO_VirtualRegister;
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// Now get the constant value and check if it fits in the IMMED field.
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// Take advantage of the fact that the max unsigned value will rarely
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// fit into any IMMED field and ignore that case (i.e., cast smaller
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// unsigned constants to signed).
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// Now check if the constant value fits in the IMMED field.
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//
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int64_t intValue;
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if (isa<PointerType>(CPV->getType()))
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intValue = 0; // We checked above that it is NULL
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else if (ConstantBool* CB = dyn_cast<ConstantBool>(CPV))
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intValue = CB->getValue();
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else if (CPV->getType()->isSigned())
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intValue = cast<ConstantSInt>(CPV)->getValue();
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else
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{ // get the int value and sign-extend if original was less than 64 bits
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intValue = cast<ConstantUInt>(CPV)->getValue();
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switch(CPV->getType()->getPrimitiveID())
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{
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case Type::UByteTyID: intValue = (int64_t) (int8_t) intValue; break;
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case Type::UShortTyID: intValue = (int64_t) (short) intValue; break;
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case Type::UIntTyID: intValue = (int64_t) (int) intValue; break;
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default: break;
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}
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}
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return ChooseRegOrImmed(intValue, CPV->getType()->isSigned(),
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return ChooseRegOrImmed((int64_t) valueToUse, val->getType()->isSigned(),
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opCode, target, canUseImmed,
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getMachineRegNum, getImmedValue);
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}
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//---------------------------------------------------------------------------
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// Function: FixConstantOperandsForInstr
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//
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@ -87,44 +87,21 @@ ChooseRegOrImmed(Value* val,
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getImmedValue = 0;
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// To use reg or immed, constant needs to be integer, bool, or a NULL pointer
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Constant *CPV = dyn_cast<Constant>(val);
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if (CPV == NULL
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|| CPV->isConstantExpr()
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|| (! CPV->getType()->isIntegral() &&
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! (isa<PointerType>(CPV->getType()) && CPV->isNullValue())))
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// TargetInstrInfo::ConvertConstantToIntType() does the right conversions:
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bool isValidConstant;
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uint64_t valueToUse =
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target.getInstrInfo().ConvertConstantToIntType(target, val, val->getType(),
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isValidConstant);
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if (! isValidConstant)
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return MachineOperand::MO_VirtualRegister;
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// Now get the constant value and check if it fits in the IMMED field.
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// Take advantage of the fact that the max unsigned value will rarely
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// fit into any IMMED field and ignore that case (i.e., cast smaller
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// unsigned constants to signed).
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// Now check if the constant value fits in the IMMED field.
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//
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int64_t intValue;
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if (isa<PointerType>(CPV->getType()))
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intValue = 0; // We checked above that it is NULL
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else if (ConstantBool* CB = dyn_cast<ConstantBool>(CPV))
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intValue = CB->getValue();
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else if (CPV->getType()->isSigned())
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intValue = cast<ConstantSInt>(CPV)->getValue();
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else
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{ // get the int value and sign-extend if original was less than 64 bits
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intValue = cast<ConstantUInt>(CPV)->getValue();
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switch(CPV->getType()->getPrimitiveID())
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{
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case Type::UByteTyID: intValue = (int64_t) (int8_t) intValue; break;
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case Type::UShortTyID: intValue = (int64_t) (short) intValue; break;
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case Type::UIntTyID: intValue = (int64_t) (int) intValue; break;
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default: break;
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}
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}
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return ChooseRegOrImmed(intValue, CPV->getType()->isSigned(),
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return ChooseRegOrImmed((int64_t) valueToUse, val->getType()->isSigned(),
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opCode, target, canUseImmed,
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getMachineRegNum, getImmedValue);
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}
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//---------------------------------------------------------------------------
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// Function: FixConstantOperandsForInstr
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//
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