6 GCC regressions, 2 new, with your patch on 2002-07-20T23:26:42Z.

[Roger Sayle]

Hi Jan,
> There are 2 new failures, and 4 failures that existed before and after
> that patch; 0 failures have been fixed.
>
> The new failures are:
> mips-elf gcc.sum gcc.c-torture/execute/921029-1.c
> native gcc.sum gcc.dg/20010912-1.c

These look like they're yours.  I'm guessing its a bug in cselib or
your new cprop code.  In 20010912-1.c, the routine foo is miscompiled:

>> int foo (int x, char *y)
>> {
>>   int a;
>>   char *b = y;
>>   a = bar (x, &y);
>>   if (a)
>>     {
>>       y = b;
         ^
This assignment is incorrectly removed.  The call to "bar" changes
the value of y, which isn't correctly noticed by cprop...

>>       a = baz (x, &y);
>>     }
>>   if (a)
>>     return a;
>>
>>   baz (x, &y);
>>   return 0;
>> }

I hope this helps.

Roger
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