bug report 4.3BSD/usr.bin/52

bug report 4.3BSD/usr.bin/51

bug report 4.3BSD/usr.bin/51

bug report 4.3BSD/usr.bin/51

bug report 4.3BSD/usr.bin/51

bug report 4.3BSD/lib/54

bug report 4.3BSD/usr.bin/44

bug report 4.3BSD/usr.bin/44

typo

bug report 4.3BSD/usr.bin/50

bug report 4.3BSD/usr.bin/48

bug report 4.3BSD/usr.bin/47

bug report 4.3BSD/usr.bin/46

must be more careful about signed and unsigned conversions

completely redo handling of SCONV nodes to cope with Tahoe's
incorrect handling of char's and short's in registers (e.g. cvtwl r0,r0
does a movl); also correct OPLOG handling for items shorter than

completely redo handling of SCONV nodes to cope with Tahoe's
incorrect handling of char's and short's in registers (e.g. cvtwl r0,r0
does a movl); also correct OPLOG handling for items shorter than 32-bits:
tst[wb] on registers don't work, but cmp[bw] $0,r? does; finally, handle
change to local.c which leaves in lots of new SCONV's (we optimize those
which are extraneous in code added mainly to optim2)

show more ...

leave SCONV nodes in unless they don't change object's size

bug report 4.3BSD/lib/21

bug report 4.3BSD/lib/10

bug report 4.3/usr.bin/15

pcc moved again

add NEVEN definition for tahoe

update for pcc dir move; add rel.c reference; use symbolic link to comm1.c

take care with unsigned constant compression (for tahoe);
put back PRTDCON redefinition; ifdef asgop optimizations (tahoe can't
handle them in code generation)

additional check for empty stack

add tahoe kludge