diff options
Diffstat (limited to 'gcc/tree-ssa-loop-ivcanon.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivcanon.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/gcc/tree-ssa-loop-ivcanon.c b/gcc/tree-ssa-loop-ivcanon.c index a04466a4027..df48dfd2bc8 100644 --- a/gcc/tree-ssa-loop-ivcanon.c +++ b/gcc/tree-ssa-loop-ivcanon.c @@ -1,24 +1,24 @@ /* Induction variable canonicalization. Copyright (C) 2004, 2005, 2007, 2008 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 pass detects the loops that iterate a constant number of times, - adds a canonical induction variable (step -1, tested against 0) + adds a canonical induction variable (step -1, tested against 0) and replaces the exit test. This enables the less powerful rtl level analysis to use this information. @@ -155,7 +155,7 @@ constant_after_peeling (tree op, gimple stmt, struct loop *loop) if (is_gimple_min_invariant (op)) return true; - + /* We can still fold accesses to constant arrays when index is known. */ if (TREE_CODE (op) != SSA_NAME) { @@ -291,7 +291,7 @@ tree_estimate_loop_size (struct loop *loop, edge exit, struct loop_size *size) fprintf (dump_file, "size: %i-%i, last_iteration: %i-%i\n", size->overall, size->eliminated_by_peeling, size->last_iteration, size->last_iteration_eliminated_by_peeling); - + free (body); } @@ -323,7 +323,7 @@ estimated_unrolled_size (struct loop_size *size, } /* Tries to unroll LOOP completely, i.e. NITER times. - UL determines which loops we are allowed to unroll. + UL determines which loops we are allowed to unroll. EXIT is the exit of the loop that should be eliminated. */ static bool @@ -431,9 +431,9 @@ try_unroll_loop_completely (struct loop *loop, } /* Adds a canonical induction variable to LOOP if suitable. - CREATE_IV is true if we may create a new iv. UL determines + CREATE_IV is true if we may create a new iv. UL determines which loops we are allowed to completely unroll. If TRY_EVAL is true, we try - to determine the number of iterations of a loop by direct evaluation. + to determine the number of iterations of a loop by direct evaluation. Returns true if cfg is changed. */ static bool @@ -494,7 +494,7 @@ canonicalize_induction_variables (void) loop_iterator li; struct loop *loop; bool changed = false; - + FOR_EACH_LOOP (li, loop, 0) { changed |= canonicalize_loop_induction_variables (loop, |