[unix-history] / usr / src / cmd / mip / fconvert

In an attempt to speed up the Fortran 77
compiler, we have provided a new interface between
the fortran compiler and the portable C compiler.
The intermediate file is binary, and the result is
to speed up the execution of Fortran considerably.
The changes necessary to make this work are as follows:

***	The ONEPASS flag should be off for Fortran;
	the simplest way of making this happen is to take
	the line # define ONEPASS on macdefs, and put a
	# ifndef FORT ... # endif around it.

***	The function label from pass 1 must be put in
	a file, fort.h.  Also,  a simple function, tlabel,
	must be written to copy names and make labels.

***	The function `where' must be defined, as well as the
	function main (which was once on local2.c).
	They can be defined on fort.h, or on local2.c
	(surrounded by # ifnded ONEPASS and # endif)

***	Other things from pass one may have crept into the pass 2
	code: they must be also done, either on fort.h or
	on local2.c surrounded by ifdefs.

***	make fort  then creates the fortran interface...
Commit	Line	Data
5a7128e9 BJ	1	In an attempt to speed up the Fortran 77
	2	compiler, we have provided a new interface between
	3	the fortran compiler and the portable C compiler.
	4	The intermediate file is binary, and the result is
	5	to speed up the execution of Fortran considerably.
	6	The changes necessary to make this work are as follows:
	7
	8	*** The ONEPASS flag should be off for Fortran;
	9	the simplest way of making this happen is to take
	10	the line # define ONEPASS on macdefs, and put a
	11	# ifndef FORT ... # endif around it.
	12
	13	*** The function label from pass 1 must be put in
	14	a file, fort.h. Also, a simple function, tlabel,
	15	must be written to copy names and make labels.
	16
	17	*** The function `where' must be defined, as well as the
	18	function main (which was once on local2.c).
	19	They can be defined on fort.h, or on local2.c
	20	(surrounded by # ifnded ONEPASS and # endif)
	21
	22	*** Other things from pass one may have crept into the pass 2
	23	code: they must be also done, either on fort.h or
	24	on local2.c surrounded by ifdefs.
	25
	26	*** make fort then creates the fortran interface...
	27