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From: "wilson at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/100316] Regression: __clear_cache() does not support
 NULL-pointer arguments
Date: Wed, 28 Apr 2021 21:23:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100316

Jim Wilson <wilson at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aoliva at gcc dot gnu.org,
                   |                            |wilson at gcc dot gnu.org

--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
Constant addresses are VOIDmode, and it only accepts Pmode and ptr_mode.  It
should accept VOIDmode too.  For instance cse_lookup_mem does this
  addr_mode =3D GET_MODE (XEXP (x, 0));
  if (addr_mode =3D=3D VOIDmode)
    addr_mode =3D Pmode;

This stems from changes that Alexandre Oliva made.  Adding him to the cc li=
st.=