BuildFSub() 공개 메소드

public BuildFSub ( Value lhs, Value rhs, string varName = tmpvarname ) : Value
lhs Value
rhs Value
varName string
리턴 Value
예제 #1
0
        public override Value CodeGen(IRBuilder builder)
        {
            Value l = this.LHS.CodeGen(builder);
            Value r = this.RHS.CodeGen(builder);
            if(l.IsNull || r.IsNull) return Value.Null;

            switch(this.Op)
            {
                case '+':
                    return builder.BuildFAdd(l, r);
                case '-':
                    return builder.BuildFSub(l, r);
                case '*':
                    return builder.BuildFMul(l, r);
                case '<':
                    // Convert bool 0/1 to double 0.0 or 1.0
                    return builder.BuildFCmpAndPromote(l, LLVMRealPredicate.RealULT, 
                                                       r, TypeRef.CreateDouble());
            }

            // If it wasn't a builtin binary operator, it must be a user defined one. Emit
            // a call to it.
            Function f = CodeGenManager.Module.GetFunction("binary" + this.Op);
            Debug.Assert(f != null);

            Value[] ops = new Value[] { l, r };
            return builder.BuildCall(f, ops, "binop");
        }
예제 #2
0
        public override Value CodeGen(IRBuilder builder)
        {
            Value l = this.LHS.CodeGen(builder);
            Value r = this.RHS.CodeGen(builder);
            if(l.IsNull || r.IsNull) return Value.Null;

            switch(this.Op)
            {
                case '+':
                    return builder.BuildFAdd(l, r);
                case '-':
                    return builder.BuildFSub(l, r);
                case '*':
                    return builder.BuildFMul(l, r);
                case '<':
                    // Convert bool 0/1 to double 0.0 or 1.0
                    return builder.BuildFCmpAndPromote(l, LLVMRealPredicate.RealULT, r, TypeRef.CreateDouble());
            }

            CodeGenManager.ErrorOutput.WriteLine("Unknown binary operator.");
            return Value.Null;
        }