[Bug target/126529] [16/17 Regression] wrong code at -O3 -mavx2 since r16-8339

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126529

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com,
                   |                            |jakub at gcc dot gnu.org
           Keywords|needs-bisection             |
            Summary|[16/17 Regression] wrong    |[16/17 Regression] wrong
                   |code at -O3 -mavx2          |code at -O3 -mavx2 since
                   |                            |r16-8339

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r16-8339-gb4c215b36d63e1c264d8c1bd5d34f9aef1bb8463
typedef signed char A[[gnu::vector_size (2)]];
typedef short B[[gnu::vector_size (16)]];
int a, b, c, d;
B e;
[[gnu::vector_size(8 * sizeof (int))]] int f;
_Bool g;

[[gnu::noipa]] void *
foo (long long x, _Bool y, int z, B w)
{
  A h = {};
  short i = h[z];
  f = 0 % f;
  w = e;
  d = w[g];
  h = ((union { short s; A t; }) { i }).t;
  b = 3 / x;
  h = __builtin_shufflevector (h, h, 3, 2);
lab:
  c = h[0];
  if (y)
    return 0;
  y = 1;
  h = ~h;
  goto lab;
}

int
main ()
{
  foo (3355934481768670720LL, 0, a, e);
}