rtx_subrtx_bound_info Struct Reference

#include <rtl-iter.h>

Data Fields
unsigned char	start
unsigned char	count

Detailed Description

RTL iterators
   Copyright (C) 2014-2024 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.   

This structure describes the subrtxes of an rtx as follows:

- if the rtx has no subrtxes, START and COUNT are both 0.

- if all the subrtxes of an rtx are stored in a contiguous block
  of XEXPs ("e"s), START is the index of the first XEXP and COUNT
  is the number of them.

- otherwise START is arbitrary and COUNT is UCHAR_MAX.

rtx_all_subrtx_bounds applies to all codes.  rtx_nonconst_subrtx_bounds
is like rtx_all_subrtx_bounds except that all constant rtxes are treated
as having no subrtxes.   

Field Documentation

count

unsigned char rtx_subrtx_bound_info::count

Referenced by init_rtlanal(), leaf_code_p(), and setup_reg_subrtx_bounds().

start

unsigned char rtx_subrtx_bound_info::start

Referenced by setup_reg_subrtx_bounds().

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The documentation for this struct was generated from the following file:

• rtl-iter.h