Fix tree-optimization/17528 and libstdc++ tests

[Andrew Pinski]

On Sep 16, 2004, at 9:40 PM, Diego Novillo wrote:

> On Thu, 2004-09-16 at 23:37, Daniel Berlin wrote:
>
>> I'll see if i can reproduce this with a cross compiler and see what is
>> going on.
>>
> Note that I get an identical failure on x86.  Compile the attached with
>
> $ ./cc1 -fpreprocessed memset-3.i -quiet -dumpbase memset-3.c  
> -mtune=pentiumpro -auxbase memset-3 -O3 -w -version  
> -fomit-frame-pointer -o memset-3.s
>
> GNU C version 4.0.0 20040916 (experimental) (i686-pc-linux-gnu)
>         compiled by GNU C version 3.3.3 20040412 (Red Hat Linux  
> 3.3.3-7).
> GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
> /home/dnovillo/gcc.clean/src/gcc/testsuite/gcc.c-torture/execute/ 
> memset-3.c: In function 'main':
> /home/dnovillo/gcc.clean/src/gcc/testsuite/gcc.c-torture/execute/ 
> memset-3.c:58: internal compiler error: tree check: expected  
> value_handle, have addr_expr in value_insert_into_set_bitmap, at  
> tree-ssa-pre.c:470

Here is a reduced testcase which I can reproduce on  
powerpc-apple-darwin:
char buf[10];

void abort (void);
void check (int len)
{
   char *q;
   int i;

   q = buf;
   for (i = 0; i < 1; i++, q++)
     if (*q != 'a')
       abort ();

   for (i = 0; i < len; i++, q++)
     if (*q != 'b')
       abort ();
}


Thanks,
Andrew Pinski