JPH0357022A - Arithmetic processing system - Google Patents

Abstract

PURPOSE:To shorten the execution time by determining the operation mode in each intermediate word of an arithmetic formula and determining one operation mode for the arithmetic formula. CONSTITUTION:At the time of recognizing the arithmetic formula, which has operands of respective types to have plural types as the whole, in a source program from a source file 4, a compiler 1 starts an operation mode determining means 2. This means 2 recognizes types of individual operands of the arithmetic formula and determines the binary or decimal operation mode in accordance with the combination of these types at the time of executing the arithmetic system and outputs this operation mode before outputting an intermediate word to an intermediate word file 5. When an object generating means 3 is started, the operation mode of the arithmetic formula is recognized by the intermediate word file 5 and generates an object for type conversion, which adapts operands which do not accord with this operation mode to this operation mode, and an object for operation and outputs them to an object file 6. Thus, the execution time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an object generation method in a language processor for a language having multiple types, and more particularly to an arithmetic processing method for arithmetic expressions having multiple types.

[Conventional technology]

Conventionally, in this type of arithmetic processing method, an arithmetic instruction written in a source program is decomposed into multiple binary operations and transcription instructions in the intermediate language, and the type of the operand of the intermediate word in the binary operation format is 2. If both are binary type, set the calculation mode to 2.
It is in decimal format, otherwise it is in decimal format. And in order to match the operation mode to the operand that is different from the operation mode. Outputs an object to be converted to the same type as the calculation mode. These calculation mode determination and type conversion processes are performed for each intermediate word.

[Problem to be solved by the invention]

In the conventional arithmetic processing method described above, the arithmetic mode is not determined for a single arithmetic expression, but the arithmetic mode is determined for each intermediate word, and an object of type conversion according to that arithmetic mode is output. , has multiple operands,
If one operand of the first operation performed is not a binary type and all other operands are binary type arithmetic expressions, the operation mode for each intermediate word is determined to be other than binary type, A type conversion object is output for each intermediate word.

For this reason, there are problems in that object efficiency is poor and furthermore, it takes time to execute.

[Means to solve all problems]

The arithmetic processing method of the present invention is an operation that handles multiple operands instead of a binary operation when generating objects for operations in language processors for languages with multiple types, where each operand has its own type and can be expressed as an expression. Inputs an arithmetic expression with multiple types, recognizes the type of each operand, and determines whether the arithmetic expression is executed in binary or IQ based on a combination of these types. an operation mode determining means for determining an operation mode, and an object for generating an object If for an operand that does not follow the operation mode of binary type or decimal type centrally determined by the means, an object for type conversion to match the operation mode and an object for performing the operation. It is characterized by having means.

〔Example〕

The present invention will be explained by examples.

Referring to FIG. 1, 1. The arithmetic processing method according to the present invention includes a compiler 1, an arithmetic mode determining means 2. It has 5 object life rules, 4 source files, 5 intermediate language files, and 6 object files.

From source file 4, compiler 1 uses operations that handle multiple operands rather than binary operations in the source program.
When an arithmetic expression in which each operand has its own type and has a plurality of types as an expression is recognized, operation mode determination step 2 is activated.

The operation mode determining means 2 recognizes the type of each operand of an arithmetic expression, and determines one operation mode, binary type or decimal type, for executing the arithmetic method based on a combination of the types. Thereafter, before outputting all intermediate words of the arithmetic expression to the intermediate language file 5, the determined operation mode is output.

When the object generation means 5 is activated by the compiler 1, the intermediate language file 5 recognizes the operation mode of the arithmetic expression, and converts the type of the operand that does not follow the operation mode of the arithmetic expression to match the operation mode. An object that performs the calculation is generated and output to the object file 6.

Next, explanation will be given using a specific example.

FIG. 2 shows part of the source program in source file 1.

See also Figure 2. DATA-1 is 4-byte binary data, DATA-2 is decimal data, DATA
A-5 is defined as 2-byte binary data. In the procedure process, the result of multiplying DATA-2 and DATA-3 by gold and the value obtained by adding DATA-1 are assigned to DATA-1. Compiler 1 uses arithmetic instructions (COMPUTFI
: command) is recognized, operation mode determination 1000 steps 2 is activated. The arithmetic mode determining means 2 determines the arithmetic expression by learning the type of the operand of the arithmetic expression by substituting the result of calculating the binary data, decimal data, and binary data into the binary data. Determine whether the operation mode is binary or decimal. To determine this calculation mode, for example, the table shown in FIG. 6 may be used. In this case, the calculation mode is binary. The determined operation mode is output to the intermediate language file 5 before the intermediate language of the arithmetic expression.

FIG. 4 shows a portion of the intermediate language file 5 that corresponds to the arithmetic instruction (C!OMPUTm instruction) in FIG. Processing 4
1 means that the operation mode of the arithmetic expression is binary. Process 42 multiplies DATA-2 and DATA A-5 and assigns the result to iT#1, and process 45 multiplies DATA
This means that the result of adding A-1 and T#1 is assigned to DATA-1. When the object generation means 3 is activated by the compiler 1, processing 41 of the intermediate language file 5 is performed.
and recognizes that the operation mode of the arithmetic expression is binary. The process 42 is read, and an object If for type conversion to match the binary type is generated for DATA-2, which is an operand that does not match the binary type of the operation mode, and then an object to be multiplied is generated. Read process 46,
Since there are no operands that do not match the binary type of the operation mode, an object for addition is generated without generating an object for type conversion. The generated object is output to the object file 6.

〔Effect of the invention〕

As explained above, in the present invention, instead of determining the operation mode for each intermediate word of an arithmetic expression and outputting a type conversion object k that matches the operation mode for each intermediate word,
By determining one operation mode as an arithmetic expression, it has multiple operands, and one operand of the first operation performed is not binary, and all other operands are binary.
In the case of an arithmetic expression such as a base type arithmetic expression, determining the operation mode to be a binary type has the effect of reducing execution time because a binary type operation is performed.

4

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram showing one embodiment of the calculation processing method according to the present invention, Figure 2 is a diagram showing a part of the source file shown in Figure 1, and Figure 3 is the calculation mode determination shown in Figure 1. Diagram showing the table to be pulled to determine the mode of operation to be used by the means,
FIG. 4 is a diagram showing a part of the intermediate language file shown in FIG. 1. 1... Compiler, 2... Calculation mode determining means, 6
. . . object generation means, 4 . . . source file, 5 . . . intermediate language file, 6 . . . object file. N-2 "2, 2〉'

Claims (1)

[Claims] 1. When creating an object in an operation in a language with multiple types, it is an operation that handles multiple operands, each operand has its own type, and an arithmetic expression with multiple types is input, and each an operation mode determining means for recognizing the types of operands and determining the operation mode for executing the arithmetic expression as binary type or decimal type based on a combination of these types; 1. An arithmetic processing method, comprising object generation means for generating an object for type conversion to match the arithmetic mode and an object for performing an arithmetic operation on an operand that does not follow an arithmetic mode of base type or decimal type.