[Bug target/126446] [13/14/15/16/17 Regression] X86-64: ICE at -O1 -mavx2 during RTL pass: vregs since r12-2085

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126446

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-07-28
           Priority|P3                          |P2
     Ever confirmed|0                           |1
                 CC|                            |jakub at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
   Target Milestone|---                         |13.5
            Summary|[12-17 Regression] X86-64:  |[13/14/15/16/17 Regression]
                   |ICE at -O1 -mavx2 during    |X86-64: ICE at -O1 -mavx2
                   |RTL pass: vregs             |during RTL pass: vregs
                   |                            |since r12-2085

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r12-2085-gf65878178ab05180a5937f11f8fdb755678a82ce
typedef signed char V __attribute__((vector_size (4)));
signed char a;

void
foo ()
{
  V b;
  long long c = ~2878966870562407444LL;
  b[c] = 0;
  a = b[0];
}