mirror of git://gcc.gnu.org/git/gcc.git
29 lines
1.2 KiB
Modula-2
29 lines
1.2 KiB
Modula-2
/* Description of target passes for AVR.
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Copyright (C) 2016 Free Software Foundation, Inc. */
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/* This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* This avr-specific pass (re)computes insn notes, in particular REG_DEAD
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notes which are used by `avr.c::reg_unused_after' and branch offset
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computations. These notes must be correct, i.e. there must be no
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dangling REG_DEAD notes; otherwise wrong code might result, cf. PR64331.
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DF needs (correct) CFG, hence right before free_cfg is the last
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opportunity to rectify notes. */
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INSERT_PASS_BEFORE (pass_free_cfg, 1, avr_pass_recompute_notes);
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