[Bug tree-optimization/28937] [4.2 regression] ICE in add_virtual_operand, at tree-ssa-operands.c:1309

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-09-02 16:49 -------
Reduced testcase (this one fails at -O2 also):
class SHA256
{
  unsigned m_digest;
  unsigned long long m_count;
  unsigned char _buffer[64];
  static void Transform (unsigned * data);
  void WriteByteBlock (unsigned t);
};
void SHA256::WriteByteBlock (unsigned t)
{
  unsigned data32[16];
  Transform (data32);
  unsigned long long lenInBits = m_count;
  if (t != (64 - 8))
    return;
  for (int i = 0; i < 2; i++)
          _buffer[t++] = (unsigned char)lenInBits;
}
---------
Complete unrolling of the only loop there is causing the ICE.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-09-02 16:49:28
               date|                            |
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28937