GCC Middle and Back End API Reference
link Struct Reference
Collaboration diagram for link:
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Data Fields

struct link * next
int pos
int vecelt

Detailed Description

Generate code from machine description to perform peephole optimizations.
   Copyright (C) 1987-2025 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
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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/>.   
While tree-walking an instruction pattern, we keep a chain
of these `struct link's to record how to get down to the
current position.  In each one, POS is the operand number,
and if the operand is a vector VEC is the element number.
VEC is -1 if the operand is not a vector.

Field Documentation

◆ next

struct link* link::next

Referenced by copy_INSN_LIST(), df_chain_create(), df_chain_dump(), distribute_links(), gen_insn(), main(), match_rtx(), maybe_queue_insn(), and union_defs().

◆ pos

int link::pos

Referenced by match_rtx().

◆ vecelt

int link::vecelt

Referenced by match_rtx().

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