[Bug tree-optimization/91758] Clang fails to pass validation after r261089

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91758

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
So no, the affective change is:

  D.1259546.IndirectRealign = SR.6335_125;
  D.1259546.InReg = SR.6336_130;

  _163 = (unsigned char) SR.6335_125;
  _50 = (unsigned char) SR.6336_130;
  _140 = _50 << 1;
  _34 = _140 | _163;
  _383 = MEM[(struct ABIArgInfo *)&D.1259546 + 27B];
  _382 = _383 & 252;
  _358 = _34 & 3;
  _381 = _382 | _358;
  MEM[(struct ABIArgInfo *)&D.1259546 + 27B] = _381;

which is also fine from store-merging point of view.