protected internal override void VisitStObj(StObj inst)
{
base.VisitStObj(inst);
if (EarlyExpressionTransforms.StObjToStLoc(inst, context))
{
context.RequestRerun();
return;
}
TransformAssignment.HandleCompoundAssign(inst, context);
}
protected internal override void VisitStObj(StObj inst)
{
if (IsDisplayClassFieldAccess(inst.Target, out var v, out var displayClass, out var field)) {
VariableToDeclare vd = displayClass.VariablesToDeclare[(IField)field.MemberDefinition];
if (vd.CanPropagate && vd.Initializers.Contains(inst)) {
if (inst.Parent is Block containingBlock) {
context.Step($"Remove initializer of {v.Name}.{vd.Name} due to propagation", inst);
containingBlock.Instructions.Remove(inst);
return;
}
}
}
base.VisitStObj(inst);
EarlyExpressionTransforms.StObjToStLoc(inst, context);
}
protected internal override void VisitStObj(StObj inst)
{
base.VisitStObj(inst);
if (EarlyExpressionTransforms.StObjToStLoc(inst, context))
{
context.RequestRerun();
return;
}
if (inst.Value is BinaryNumericInstruction binary &&
binary.Left.MatchLdObj(out ILInstruction target, out IType t) &&
inst.Target.Match(target).Success &&
SemanticHelper.IsPure(target.Flags) &&
CompoundAssignmentInstruction.IsBinaryCompatibleWithType(binary, t))
{
context.Step("compound assignment", inst);
// stobj(target, binary.op(ldobj(target), ...))
// => compound.op(target, ...)
inst.ReplaceWith(new CompoundAssignmentInstruction(
binary, binary.Left, binary.Right,
t, CompoundAssignmentType.EvaluatesToNewValue));
}
}
protected internal override void VisitStObj(StObj inst)
{
inst.Value.AcceptVisitor(this);
if (inst.Parent is Block)
{
if (IsParameterAssignment(inst, out var displayClass, out var field, out var parameter))
{
context.Step($"Detected parameter assignment {parameter.Name}", inst);
displayClass.Variables.Add((IField)field.MemberDefinition, parameter);
instructionsToRemove.Add(inst);
return;
}
if (IsDisplayClassAssignment(inst, out displayClass, out field, out var variable))
{
context.Step($"Detected display-class assignment {variable.Name}", inst);
displayClass.Variables.Add((IField)field.MemberDefinition, variable);
instructionsToRemove.Add(inst);
return;
}
}
inst.Target.AcceptVisitor(this);
EarlyExpressionTransforms.StObjToStLoc(inst, context);
}