(1) Deleted arguable 'i << 1' => 'i + i' optimization -- this enables
'register short *sp; register int i; sp[i]' to be done with a VAX indexing
mode. (2) Added an optimization that converts constan

(1) Deleted arguable 'i << 1' => 'i + i' optimization -- this enables
'register short *sp; register int i; sp[i]' to be done with a VAX indexing
mode. (2) Added an optimization that converts constant negative shifts of
unsigned variables into positive shifts in the opposite direction.

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update from donn@utah-cs

use common header file for C, Fortran, Pascal.

change unsigned %'s and /'s to &'s and >>'s.

changes for single precision floats; lint cleanups

don't give compiler error for & of register

date and time created 84/08/13 15:24:59 by ralph