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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110313] [14 Regression] GCN Fiji reload ICE in
 'process_alt_operands'
Date: Tue, 20 Jun 2023 22:55:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110313

--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Adding this debug code :

__builtin_fprintf (stderr, "DEBUG:>> %d - %d - %d\n",
   get_lra_reg_info_size () ,
   max_reg_num (), ORIGINAL_REGNO (operand_reg[nop]));

shows for the failing case:

  DEBUG: 664 - 446 - 835

Namely: the problem is that
   ORIGINAL_REGNO() > max_reg_num ()
and not that lra.cc's reg_info_size < max_reg_num ().=