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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/99912] Unnecessary / inefficient spilling of AVX2 ymm
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Date: Tue, 27 Apr 2021 14:02:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99912

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
So with the latest patches I now see real spilling dominating (oops).  I al=
so
see, on the GIMPLE level

  _64425 =3D (unsigned long) SR.3210_122492;
  _64416 =3D _64425 + ivtmp.5307_121062;
  _62971 =3D (double &) _64416;
  __builtin_ia32_maskloadpd256 (_62971, _61513);

that is, dead masked loads (that's odd).

There's also still some dead / redundant code from the abstraction to remov=
e.=