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Functions
bool	simple_iv_increment_p (gimple *)

Function Documentation

◆ simple_iv_increment_p()

bool simple_iv_increment_p ( gimple * stmt )

extern

Header file for SSA dominator optimizations.
   Copyright (C) 2013-2024 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/>.

Returns true when STMT is a simple iv increment.  It detects the
following situation:

i_1 = phi (..., i_k)
[...]
i_j = i_{j-1}  for each j : 2 <= j <= k-1
[...]
i_k = i_{k-1} +/- ...

References ggc_alloc(), gimple_assign_lhs(), gimple_assign_rhs1(), gimple_assign_rhs_code(), gimple_assign_ssa_name_copy_p(), gimple_phi_arg_def(), gimple_phi_num_args(), i, SSA_NAME_DEF_STMT, and TREE_CODE.

Referenced by eliminate_redundant_computations().

Functions

Function Documentation

◆ simple_iv_increment_p()