f7dff7699f
This patch addresses the problem reported in PR92429. When creating an epilogue for vectorization we have to replace the SSA_NAMEs in the PATTERN_DEF_SEQs and RELATED_STMTs of the epilogue's loop_vec_infos. When doing this we were using simplify_replace_tree which always folds the replacement. This may lead to a different tree-node than the one which was analyzed in vect_loop_analyze. In turn the new tree-node may require a different vectorization than the one we had prepared for which caused the ICE in question. gcc/ChangeLog: 2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com> PR tree-optimization/92429 * tree-ssa-loop-niter.h (simplify_replace_tree): Add parameter. * tree-ssa-loop-niter.c (simplify_replace_tree): Add parameter to control folding. * tree-vect-loop.c (update_epilogue_vinfo): Do not fold when replacing tree. gcc/testsuite/ChangeLog: 2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com> PR tree-optimization/92429 * gcc.dg/vect/pr92429.c: New test.
64 lines
3 KiB
C++
64 lines
3 KiB
C++
/* Header file for loop interation estimates.
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Copyright (C) 2013-2020 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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#ifndef GCC_TREE_SSA_LOOP_NITER_H
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#define GCC_TREE_SSA_LOOP_NITER_H
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extern tree expand_simple_operations (tree, tree = NULL);
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extern tree simplify_using_initial_conditions (class loop *, tree);
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extern bool loop_only_exit_p (const class loop *, basic_block *body,
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const_edge);
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extern bool number_of_iterations_exit (class loop *, edge,
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class tree_niter_desc *niter, bool,
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bool every_iteration = true,
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basic_block * = NULL);
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extern bool number_of_iterations_exit_assumptions (class loop *, edge,
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class tree_niter_desc *,
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gcond **, bool = true,
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basic_block * = NULL);
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extern tree find_loop_niter (class loop *, edge *);
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extern bool finite_loop_p (class loop *);
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extern tree loop_niter_by_eval (class loop *, edge);
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extern tree find_loop_niter_by_eval (class loop *, edge *);
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extern bool estimated_loop_iterations (class loop *, widest_int *);
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extern HOST_WIDE_INT estimated_loop_iterations_int (class loop *);
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extern bool max_loop_iterations (class loop *, widest_int *);
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extern HOST_WIDE_INT max_loop_iterations_int (class loop *);
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extern bool likely_max_loop_iterations (class loop *, widest_int *);
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extern HOST_WIDE_INT likely_max_loop_iterations_int (class loop *);
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extern HOST_WIDE_INT max_stmt_executions_int (class loop *);
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extern HOST_WIDE_INT likely_max_stmt_executions_int (class loop *);
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extern HOST_WIDE_INT estimated_stmt_executions_int (class loop *);
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extern bool max_stmt_executions (class loop *, widest_int *);
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extern bool likely_max_stmt_executions (class loop *, widest_int *);
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extern bool estimated_stmt_executions (class loop *, widest_int *);
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extern void estimate_numbers_of_iterations (function *);
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extern void estimate_numbers_of_iterations (class loop *);
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extern bool stmt_dominates_stmt_p (gimple *, gimple *);
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extern bool nowrap_type_p (tree);
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extern bool scev_probably_wraps_p (tree, tree, tree, gimple *,
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class loop *, bool);
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extern void free_numbers_of_iterations_estimates (class loop *);
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extern void free_numbers_of_iterations_estimates (function *);
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extern tree simplify_replace_tree (tree, tree,
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tree, tree (*)(tree, void *) = NULL,
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void * = NULL, bool do_fold = true);
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extern void substitute_in_loop_info (class loop *, tree, tree);
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#endif /* GCC_TREE_SSA_LOOP_NITER_H */
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