JPH02109135A - Do form array input conversion system - Google Patents

Abstract

PURPOSE:To perform an DO form array input process at a high speed by providing a source program input means, a DO form array input sentence recognizing means, and a DO form array input conversion means. CONSTITUTION:A processor 2 is started with a user's instruction 6, and a source program input means 21 sets a source program 1 and sends this program to a DO form array input sentence recognizing means 22. In this case, the program 1 includes an input sentence which contains the array elements having the nonlinear array additional characters in the DO variable as the input items of the DO form array. Then the means 22 analyzes the program 1 and recognizes an input sentence. Based on this recognizing result, a DO form array input conversion means 23 converts a new DO variable K into a work array element WORK(K) having the linear additional characters. In addition, the DO loop which includes a substitute sentence that stores the value of the WORK(K) into an array element A[I(k] having the nonlinear additional characters in the variable K is formed and inserted to a place right after a leading sentence. Then a source program 3 converted from the input sentence is outputted. The program 3 is interpreted by a compiler 4 into an object program so as to be inputted with one call of RTP. As a result, a compiling unit 5 is executed at a high speed with a calling action.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a DO type input conversion method, and in particular to a FOR
The present invention relates to a DO-type sequence input conversion method that improves the execution efficiency of input statements containing DO-type sequences as input sequences in a target program generated by a TRAN language processor (hereinafter simply referred to as a compiler).

[Conventional technology]

In general, the operating system (hereinafter abbreviated as O8) is based on the FORTRAN language (Japanese Standards Subcommittee published "Electronic ε1 Computer Programming Language FORTRAN, JISC-
6201-19B2J) and functions for processing corresponding data. To this end, the FORTRAN runtime input/output control mechanism (
Hereinafter, abbreviated as R-1'P) exists.

In the case of processing an input statement, the compiler creates an object program that creates information such as type, length, storage address, etc. corresponding to the input list item, and then passes control to RTP. For example, in the case of READ (1) A, B, processing is performed such as A's information creation RTP is called, B's information creation RTP is called, and so on.

The same applies when input and DO type sequence appear.
(1) In the case of (A (1), I=1.N), the DO type sequence is expanded into a DO small loop and processed as follows.

DOI=1. N A (f) information creation RT P call E N D D O By the way, in some systems, the input item is an array subscript that is linear (the increment value is - constant) to the I) O variable, as in this example. In the case of array elements with , the addresses where all array elements are stored are determined by evaluating the DO variable during DO type alignment evaluation, so 1n information such as the first address, increment value, number of repetitions, etc. By adding this, the number of RTP calls is not reduced to one.

Calling RTP to create information for A(1) to A(N) However, even with such a compiler, READ(1)() to N(K)), = 1. If an array element with a non-linear array subscript in the O variable is specified as a manual item, such as ]), all array elements will not be stored if only the DO variable is evaluated during DO type array evaluation. Since the address was not determined, the above-mentioned processing could not be performed, and the situation developed into an O-loop as shown below.

DOK=1. N L-1 (K) A (L) information creation RTP call NDDO [Problem to be solved by the invention] In the above-mentioned conventional technology, when inputting a DO type sequence, DO
If the addresses where all array elements are stored cannot be determined by just evaluating the DO variable when evaluating the array, that is, D
The input items are arranged in an O-shape.

If the variable is an array element with a non-linear array index, RTP is performed for the number of times repeated by the DO arrangement.
This has the disadvantage that the execution efficiency of the target program is considerably degraded, especially in computer systems where calling RTP takes a long time to execute.

In view of the above points, an object of the present invention is to use DO as an input sequence.
DO the input sentence containing the form sequence as an input item of the DO form sequence.
The number of FTP calls from the target program can be reduced by 1 by converting an input statement containing a working array element with a linear array index to the variable and an assignment statement from the working array element having a linear array index to the DO variable. Each time, we provide a DO type input conversion method that improves the efficiency of executing the target program by reducing the number of times.

(Means for Solving the Problems) The DO type input conversion method of the present invention generates a target program having a plurality of instructions from a source program, and also enables quotation by the target program and eliminates functional differences between the target program and the operating system. FOR has a runtime input/output control mechanism that performs input/output control, etc.
In a computer system equipped with a TRAN language processor, a source program input means inputs a source program having a DO type sequence as an input sequence, and the DO type sequence is used as an input item in the source program input by the source program input means.

A DO-type array input sentence recognition means that recognizes an input sentence that includes an array element whose variable has a non-linear array index; as an input statement containing a working array element with a linear array index to the DO variable, and an assignment statement from a working array element with a linear array index to the DO variable to an array element with a non-linear array index to the DO variable. and a DO type sequence input conversion means for outputting a primitive block 1''gram into which the input sentence has been converted.

[Effect]

In the DO type sequence input conversion method of the present invention, the source program input means inputs a source program having a DO type sequence as an input sequence, and the DO type sequence input sentence recognition means converts the input source program into the source program input by the source program input means. An input sentence containing an array element having a non-linear array index in a DO variable is recognized as an input item of a DO type array, and the DO type array input conversion means converts the input sentence recognized by the DO type array input sentence recognition means into a DO type array. An input statement containing a working array element with a linear array index on the DO variable as an input item, and a working array element with a linear array index on the DO variable to an array element with a non-linear array index on the DO variable. The input statement is converted into an assignment statement and the source program with the converted input statement is output.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a DO type input conversion system according to an embodiment of the present invention. The DO type array input conversion method of this embodiment reads the source program 1 and converts the input statement containing an array element having a non-linear array index to the DO variable as an input item of the DO type array.
A briprocessor 2 that converts an input statement that has a working array element that has a linear array subscript to a variable as an input item and an assignment statement from a working array element that has a linear array subscript to a DO variable; A source program 3 into which the input sentences to be output have been converted, a compiler 4 which inputs and translates the source program 3 into which the input sentences have been converted, a compile unit 5 which is an object program translated by the compiler 4, and a compiler 4 which is an objective program translated by the compiler 4; The main part is composed of instructions 6 given by the user to the processor 2.

The preprocessor 2 includes a source program input means 21 that imports the source program 1 based on instructions 6 from the user.
In the source program 1 imported by the source program input means 21, DO is input as an input item in the DO type sequence.
A DO-type array input sentence recognition means 22 recognizes an input sentence that includes an array element whose variable has a non-linear array index, and the input sentence recognized by the DO-type array input sentence recognition means 22 is DO-shaped as an input item of the DO-type array. Converts an input statement containing a working array element with a linear array subscript to a variable and an assignment statement from a working array element with a linear array subscript to a DO variable to an array element with a non-linear array subscript to the DO variable. The apparatus includes a DO type input conversion means 23 which outputs a source program 3 into which an input sentence has been converted.

Compiler 4 has input items arranged in DO format.

For array elements with linear array subscripts on variables, RTP
This is a compiler that translates input statements into the target program so as to reduce the number of calls to one.

Next, the operation of the DO type input conversion system of this embodiment configured as described above will be specifically explained with reference to FIGS. 2 and 3.

When the pre-processor 2 is activated based on an instruction 6 by the user, the source program input means 21 first inputs a DO program written in the FORTRAN language as shown in FIG.
A source program 1 containing an input sentence containing an array element "A(+(K))J" having a non-linear array subscript in the DO variable as an input item for the DO type sequence is taken in and passed to the DO type sequence input sentence recognition means 224. .

Next, the DO type array input sentence recognition means 22 analyzes the source program 1 passed from the source program input means 21, and includes an array element having a non-linear array subscript in the DO variable as an input item of the DO type array. Recognize input sentences.

Next, the DO-type sequence input conversion means 23 converts the input items of the DO-form sequence of the READ sentence, which is an input sentence having a DO-form sequence as an input sequence, based on the recognition result of the DO-form sequence input sentence recognition means 22. A (1(K)) is changed to a work array element WORK (K) having an array index linear to the DO variable K newly generated by the preprocessor 2.

Furthermore, D.

The value of the work array element WORK (K) is assigned to the DO variable K according to the variable K, and the array element A (+
(K)).

A loop is generated and inserted immediately after the READ statement, and a source program 3 in which the input statement is converted as shown in FIG. 3 is output.

Next, the compiler 4 translates the source program 3 outputted from the DO type alignment manual conversion means 23 of the preprocessor 2 and into which the input sentence has been converted. Here, in the source program 3 into which this input statement has been converted, the input sequence of the READ statement, which is the input statement, is (A (I (K)), = 1., N).
(WORK (K)K=1.,N), and the input items are DO-type array elements that are linear to the DO variable K, and the READ statement is processed by the compiler 4 in one RT l). The input is translated into an object program so that the call can process the input.

Therefore, when executing the compiler UNISO 1-5, which is the target program output from the compiler 4, the READ statement, which is the input statement, is executed at high speed with one RTP call.

[Effects of the Invention] As explained above, the present invention uses an input statement having a DO type sequence as an input sequence in a source program, and a working array element having a linear array subscript to a DO variable as an input item of the DO type sequence. By converting the input statement containing ``to'' and the assignment statement from the working array element with a linear array index to the DO variable, it is possible to avoid reducing the number of RTP calls during input processing of the target program, and the input processing This has the effect of allowing the process to be carried out at high speed.

Further, as a ripple effect, in a computer system having a hector processing mechanism, the portion of the assignment statement expanded by the DO small loop can be further vectorized, so that faster processing becomes possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a DO-type array input conversion method according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a DO type array input conversion method according to an embodiment of the present invention. FIG. FIG. 3 is a diagram showing an example of a source program including form sequences. FIG. 3 is a diagram showing an example of a source program into which the input sentence shown in FIG. 2 has been converted. In the figure, l...source program, 2...briprocessor 7, 3...source program into which the input sentence has been converted, 4...
Compiler; 5. Compilation unit; 6. Instructions by user; 2I. Source program input means; 22. DO type sequence input sentence recognition means; 23. DO type sequence input conversion means.

Claims (1)

[Claims] Run-time input/output that generates a target program having a plurality of instructions from a source program, can be referenced by the target program, and fills the functional difference between the target program and the operating system, and performs input/output control, etc. In a computer system equipped with a FORTRAN language processor having a control mechanism, a source program input means for inputting a source program having a DO type sequence as an input sequence; and an input of a DO type sequence in the source program input by the source program input means; A DO type array input sentence recognition means that recognizes an input sentence including an array element having a non-linear array index in a DO variable as an item, and an input sentence recognized by the DO type array input sentence recognition means as a DO type array input item. as an input statement containing a working array element with a linear array index to the DO variable, and an assignment statement from a working array element with a linear array index to the DO variable to an array element with a non-linear array index to the DO variable. 1. A DO-type ordered input conversion method, comprising: DO-type ordered input conversion means for converting and outputting a source program obtained by converting an input sentence.