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Subject: [Bug rtl-optimization/56144] [4.8 Regression] ICE in get_reload_reg, at lra-constraints.c:421
Date: Wed, 30 Jan 2013 09:42:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56144

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-01-30
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org
          Component|c                           |rtl-optimization
   Target Milestone|---                         |4.8.0
            Summary|ICE in get_reload_reg, at   |[4.8 Regression] ICE in
                   |lra-constraints.c:421       |get_reload_reg, at
                   |                            |lra-constraints.c:421
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-30 09:42:26 UTC ---
Slightly adjusted testcase:

int a;
union U0 { volatile unsigned f2, f4; };
volatile int b;
static union U0 c;
volatile unsigned d, f;
volatile int e, g, h, i, j, k, l, m, n, o, p;
int
main ()
{
  a = b;
  a += c.f2;
  a += c.f4;
  unsigned q = h;
  a += q;
  q = g;
  a += q;
  a += f;
  q = e;
  a += q;
  a += d;
  a += 2L;
  a += j;
  a += i;
  a += k;
  a += p;
  a += o;
  a += n;
  a += m;
  a += l;
  return 0;
}

Started with LRA merge: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192719