4.4BSD snapshot (revision 8.1); add 1993 to copyright

new copyright; att/bsd/shared

Add copyright

changes from donn@utah-cs for common header file for pcc

synchronize to version 2

fixes for lint

The changes were made to allow successful linting

clean up temporary allocation, moving everything relevant to
tmps.c and (new) tmps.h. correctly emit LBRAC lines. allocate registers
from high to low. put in data structures for multiple types of

clean up temporary allocation, moving everything relevant to
tmps.c and (new) tmps.h. correctly emit LBRAC lines. allocate registers
from high to low. put in data structures for multiple types of registers.

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do not copy the old block number to the shadow var, just the flags

conform to the standard with respect to types of expressions.
change the FOR opcode generated for px,
since rangechecking is now hoisted out of the loop.

the shadow of the index variable must be the same type as the
index variable (for high-end addressed machines, like the 68000).

put in explicit scalar converts (sconv's) to make less code-generator dependent.

retain MOD and USE flags; inherit index type to temporary

must update "class" field of shadow variables

add storage classes to namelist, and use them.

increment at bottom of loop is done in base type (integer).

clean up for loop code

fix up for variables in temporaries.

add temporary register allocation

centralize temporary allocation in tmps.c

merge in onyx changes

count statements at top of for loops

date and time created 81/01/16 18:06:20 by mckusick