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Re: loop optimizations, mark 12


>  Two things of note in this revision:
>
>    * PA problem should be fixed.
>
>    * The expected benefit of any one giv is updated after
>    combinations
>      are made.  We re-sort based on the adjustment and
>      continue.  This helps cases like

[ ... do not combine givs that are too far apart ... ]

I patched a CVS based snapshot obtained 199806232000 UTC with this  
diff successfully.  However, on my m68k-next-nextstep, the build -  
started from scratch - dies while compiling c-lex.c with the stage 1  
compiler:

stage1/xgcc -Bstage1/ -c  -DIN_GCC    -W -Wall -O2 -g -O2   
-DHAVE_CONFIG_H     -I. -I../../egcs/gcc -I../../egcs/gcc/config  
../../egcs/gcc/c-lex.c
../../egcs/gcc/c-gperf.h: In function `hash':
In file included from ../../egcs/gcc/c-lex.c:131:
../../egcs/gcc/c-gperf.h:43: warning: array subscript has type `char'
../../egcs/gcc/c-gperf.h:46: warning: array subscript has type `char'
../../egcs/gcc/c-gperf.h:49: warning: array subscript has type `char'
../../egcs/gcc/c-gperf.h: At top level:
../../egcs/gcc/c-gperf.h:54: warning: missing initializer for  
`wordlist[0].token'
    [ ... 142 warnings elided ... ]
../../egcs/gcc/c-gperf.h:161: warning: missing initializer for  
`wordlist[143].token'
../../egcs/gcc/rtlanal.c:850: Internal compiler error in function  
reg_overlap_mentioned_p
make[2]: *** [c-lex.o] Error 1

I can't get a decent traceback out of gdb on this one - is that  
related to the use of the new abort() function ?

../../egcs/gcc/rtlanal.c:850: Internal compiler error in function  
reg_overlap_mentioned_p

Breakpoint 2, 0x5056468 in exit ()
(gdb) bt
#0  0x5056468 in exit ()
#1  0xc012 in main (argc=14, argv=0x3fffb2c) at ../../egcs/gcc/gcc.c:4963
(gdb)

HTH,
Toon.


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