Why so many allocates?

Bugzilla Link	1096
Created on	Oct 03, 2013 20:43
Resolution	FIXED
Resolved on	Oct 08, 2013 15:45
Version	svn
OS	Linux
Architecture	PC

Extended Description

This from Build #18312. I don't see anything obvious at -bmem:dr.
Suggestions? The modarray does have RC(AAA) after -bopt:wrci.
cat crud.sac
/*
 * This is a fault reported by Bodo on a Blocked Cholesky 
 * benchmark. 
 *
 * He says:
 *
 * It's two problems: one in wrci, and one in dr:
 *
 * wrci cannot deal with idxsels
 * and dr cannot deal with additions of idxs
 *
 */
/* RESULT: RC(AAA) 0 1 */
/* FILTER: no-no */
use Array: all;
int main()
{
   AAA = genarray([100,10],1);
   BB = AAA[[2]] + 3;
   for( i=0; i<1000000; i++) {
     AAA = with {
          ([3] <= iv < [88]): BB;
         } : modarray(AAA);
   }
   z = sum( AAA);
   z = z - 1700001000;
   return( z);
}
sac@rattler:~/sac/testsuite/optimizations/wrci$ sac2c crud.sac -O3  -check h 
sac@rattler:~/sac/testsuite/optimizations/wrci$ time a.out; echo $?
===========================================================================
Heap Management diagnostics:
===========================================================================
calls to sbrk()  :  2
total heap size  :  3080192 Bytes (2.9 MB)
===========================================================================
calls to malloc()         :  0
calls to calloc()         :  0
calls to realloc()        :  0
calls to valloc()         :  0
calls to memalign()       :  0
calls to posix_memalign() :  0
locks acquired            :  0
===========================================================================
Arena 0 :  Arena of Arenas
  1 bin(s) totalling 1048576 Bytes (1.0 MB)
          2 allocations:             2 (100%) fixed size allocations
                    2 (100%) (100%) after splitting
          0 de-allocations:          0 (100%) fixed size de-allocations
===========================================================================
Arena 3 :  memory chunk size:  128 Bytes
  1 bin(s) totalling 4096 Bytes (0.0 MB)
    1000000 allocations:       1000000 (100%) fixed size allocations
               999999 ( 99%) ( 99%) from free list
                    1 (  0%) (100%) after extending arena
    1000000 de-allocations:    1000000 (100%) fixed size de-allocations
===========================================================================
Arena 6 :  memory chunk size:  2064 -> 16400 Bytes
  1 bin(s) totalling 131136 Bytes (0.1 MB)
          2 allocations:             2 (100%) fixed size allocations
                    1 ( 50%) ( 50%) after splitting
                    1 ( 50%) (100%) after extending arena
          2 de-allocations:          2 (100%) fixed size de-allocations
===========================================================================
Arena 8 :  memory chunk size:  131088 -> ... Bytes
  1 bin(s) totalling 2031616 Bytes (1.9 MB)
          0 allocations:             0 (100%) fixed size allocations
          0 de-allocations:          0 (100%) fixed size de-allocations
===========================================================================
Total  (without arena of arenas) :
  3 bin(s) totalling 2166848 Bytes (2.1 MB)
    1000002 allocations:       1000002 (100%) fixed size allocations
               999999 ( 99%) ( 99%) from free list
                    1 (  0%) ( 99%) after splitting
                    2 (  0%) (100%) after extending arena
    1000002 de-allocations:    1000002 (100%) fixed size de-allocations
===========================================================================
real	0m0.572s
user	0m0.550s
sys	0m0.020s
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