[Bug tree-optimization/28802] New: Operations on data in dynamically allocated structure can't get vectorized

[nomis80 at nomis80 dot org]

This should get vectorized but isn't:

#include <stdlib.h>

typedef struct
{
    int data[256];
} S;

void f()
{
    S* restrict a = (S*) malloc( sizeof(S) );
    S* restrict b = (S*) malloc( sizeof(S) );
    for ( int i = 0; i < 256; ++i ) {
        b->data[i] += a->data[i];
    }
}


-- 
           Summary: Operations on data in dynamically allocated structure
                    can't get vectorized
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nomis80 at nomis80 dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28802