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TREE_THIS_VOLATILE checks on SSA_NAMEs.
* tree-scalar-evolution.c (analyzable_condition): Remove
superfluous TREE_THIS_VOLATILE checks on SSA_NAMEs.
From-SVN: r90528
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PR tree-optimization/17742
* tree-scalar-evolution.c (follow_ssa_edge_in_rhs): Handle
MINUS_EXPR correctly.
From-SVN: r90492
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as the evolution is known not computable.
* tree-scalar-evolution.c (follow_ssa_edge_in_condition_phi):
Give up as soon as the evolution is known not computable.
From-SVN: r90491
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* tree-cfg.c, tree-if-conv.c, tree-into-ssa.c,
tree-scalar-evolution.c, tree-ssa-loop-im.c,
tree-ssa-loop-ivopts.c, tree-ssa-loop-manip.c, tree-ssa.c,
tree-vectorizer.c: Replace TREE_CHAIN with PHI_CHAIN where
appropriate.
From-SVN: r90262
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* alias.c, basic-block.h, cgraphunit.c, combine.c, domwalk.h,
final.c, gengtype.c, genpreds.c, ggc-page.c, insn-notes.def,
lambda-code.c, loop-unroll.c, modulo-sched.c, pointer-set.c,
pretty-print.c, ra-colorize.c, sbitmap.c, tree-complex.c,
tree-data-ref.c, tree-dfa.c, tree-inline.c, tree-into-ssa.c,
tree-scalar-evolution.c, tree-ssa-dom.c,
tree-ssa-loop-manip.c, tree-ssa-loop-niter.c,
tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa-threadupdate.c,
tree-vectorizer.c, vec.h: Fix comment formatting.
From-SVN: r89453
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build_int_cst_type instead od fonvert.
* tree-chrec.c (chrec_fold_plus_poly_poly, chrec_fold_plus_1,
chrec_fold_multiply): Use fold_convert or build_int_cst_type instead
od fonvert.
* tree-scalar-evolution.c (compute_overall_effect_of_inner_loop,
add_to_evolution, set_nb_iterations_in_loop, follow_ssa_edge_in_rhs,
follow_ssa_edge_in_rhs): Ditto.
* tree-ssa-loop-ivopts.c (struct iv): Add base_object field.
(dump_iv): Dump base_object.
(dump_use, dump_cand): Use dump_iv.
(determine_base_object): New function.
(alloc_iv): Initialize base_object field.
(record_use): Clear the ssa_name field of iv.
(get_computation_cost_at): Do not use difference of addresses of
two different objects.
(may_eliminate_iv): Do not require the loop to have just single exit.
* tree-ssa-loop-niter.c (zero_p): Do not check for overflows.
(nonzero_p): New function.
(inverse, number_of_iterations_cond, simplify_using_outer_evolutions,
tree_simplify_using_condition, simplify_using_initial_conditions,
loop_niter_by_eval, find_loop_niter_by_eval,
estimate_numbers_of_iterations_loop, compare_trees,
upper_bound_in_type, lower_bound_in_type,
can_count_iv_in_wider_type_bound): Use buildN instead of build. Use
fold_convert or build_int_cst_type instead of convert. Use (non)zero_p
instead of integer_(non)zerop.
From-SVN: r88388
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* basic-block.h, c-decl.c, c-parse.in, cgraphunit.c, ddg.c,
gimplify.c, lambda-code.c, optabs.c, predict.c,
tree-scalar-evolution.c, tree-sra.c, tree-ssa-loop-ch.c,
tree-ssa.c, vec.h: Fix comment typos. Follow spelling
conventions.
From-SVN: r87637
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* bb-reorder.c, c-common.c, c-incpath.c, c-typeck.c,
genrecog.c, lambda-code.c, mips-tdump.c, mips-tfile.c,
passes.c, tree-data-ref.c, tree-data-ref.h, tree-mudflap.c,
tree-scalar-evolution.c, tree-ssa-copyrename.c,
tree-ssa-live.c, tree-ssa-live.h: Fix comment typos.
From-SVN: r87302
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* builtins.c (fold_builtin_strchr): Use build_int_cst, not
fold_convert.
(fold_builtin_strpbrk): Likewise.
* expr.c (array_ref_low_bound): Likewise.
* tree-scalar-evolution.c (chrec_is_positive, add_to_evolution_1,
interpret_rhs_modify_expr, number_of_iterations_in_loop): Likewise.
* tree-sra.c (generate_element_zero): Likewise.
* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.
* tree-ssa-loop-ivopts.c (determine_biv_step, idx_find_step,
add_old_iv_candidates, add_iv_candidates): Likewise.
* tree-tailcall.c (tree_optimize_tail_calls_1): Likewise.
From-SVN: r87141
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* c-common.c, c-decl.c, combine.c, defaults.h, fold-const.c,
gimplify.c, gthr-nks.h, hooks.c, lambda-code.c, lambda-mat.c,
stor-layout.c, target.h, tree-cfg.c, tree-chrec.c,
tree-if-conv.c, tree-inline.c, tree-into-ssa.c,
tree-mudflap.c, tree-optimize.c, tree-scalar-evolution.c,
tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-dce.c,
tree-ssa-pre.c, tree-vectorizer.c, tree-vectorizer.h, tree.h,
vec.h: Fix comment formatting.
From-SVN: r87105
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* tree-ssa-loop-ivcanon.c: New file.
* tree-ssa-loop-manip.c (create_iv): New function.
* Makefile.in (tree-ssa-loop-ivcanon.o): Add.
(tree-ssa-loop.o, tree-ssa-loop-manip.o): Add SCEV_H dependency.
* cfgloop.c (mark_single_exit_loops): New function.
(verify_loop_structure): Verify single-exit loops.
* cfgloop.h (struct loop): Add single_exit field.
(LOOPS_HAVE_MARKED_SINGLE_EXITS): New constant.
(mark_single_exit_loops): Declare.
(tree_num_loop_insns): Declare.
* cfgloopmanip.c (update_single_exits_after_duplication): New function.
(duplicate_loop_to_header_edge): Use it.
* common.opt (fivcanon): New flag.
* timevar.def (TV_TREE_LOOP_IVCANON, TV_COMPLETE_UNROLL): New timevars.
* tree-cfg.c (tree_find_edge_insert_loc): Return newly created block.
(bsi_commit_edge_inserts_1): Pass null to tree_find_edge_insert_loc.
(bsi_insert_on_edge_immediate): New function.
* tree-flow.h (bsi_insert_on_edge_immediate,
canonicalize_induction_variables, tree_unroll_loops_completely,
create_iv): Declare.
* tree-optimize.c (init_tree_optimization_passes): Add
pass_iv_canon and pass_complete_unroll.
* tree-pass.h (pass_iv_canon, pass_complete_unroll): Declare.
* tree-scalar-evolution.c (get_loop_exit_condition,
get_exit_conditions_rec, number_of_iterations_in_loop,
scev_initialize): Use single_exit information.
* tree-ssa-loop-niter.c (number_of_iterations_cond): Record
missing assumptions.
(loop_niter_by_eval): Return number of iterations as unsigned
int.
* tree-ssa-loop.c (tree_ssa_loop_init): Mark single exit loops.
(tree_ssa_loop_ivcanon, gate_tree_ssa_loop_ivcanon, pass_iv_canon,
tree_complete_unroll, gate_tree_complete_unroll, pass_complete_unroll):
New passes.
(tree_ssa_loop_done): Call free_numbers_of_iterations_estimates.
* tree-ssanames.c (make_ssa_name): Allow creating ssa name before
the defining statement is ready.
* tree-vectorizer.c (vect_create_iv_simple): Removed.
(vect_create_index_for_array_ref, vect_transform_loop_bound):
Use create_iv.
(vect_transform_loop_bound): Use single_exit information.
(vect_analyze_loop_form): Cleanup bogus tests.
(vectorize_loops): Do not call flow_loop_scan.
* tree.h (may_negate_without_overflow_p): Declare.
* fold-const.c (may_negate_without_overflow_p): Split out from ...
(negate_expr_p): ... this function.
(tree_expr_nonzero_p): Handle overflowed constants correctly.
* doc/invoke.texi (-fivcanon): Document.
* doc/passes.texi: Document canonical induction variable creation.
* gcc.dg/tree-ssa/loop-1.c: New test.
From-SVN: r86516
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* cfgloop.h (struct loop): Add nb_iterations field.
(current_loops): Declare.
* tree-chrec.c (chrec_not_analyzed_yet,
chrec_dont_know, chrec_known, count_ev_in_wider_type,
chrec_contains_symbols_defined_in_loop): Remove the temporary
hooks.
* tree-flow-inline.h (loop_containing_stmt): New function.
* tree-scalar-evolution.c: Add implementation.
* tree-scalar-evolution.h: Add declarations.
From-SVN: r84573
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* tree-scalar-evolution.c: New file.
* tree-scalar-evolution.h: New file.
* tree-ssa-loop-niter.c: New file.
* Makefile.in (SCEV_H): New.
(tree-scalar-evolution.o, tree-ssa-loop-niter.o): Add new files.
* cfgloop.h (struct loop): Add bounds field.
* tree-flow.h (struct tree_niter_desc): New type.
(number_of_iterations_cond, number_of_iterations_exit,
loop_niter_by_eval, find_loop_niter_by_eval,
estimate_numbers_of_iterations, can_count_iv_in_wider_type,
free_numbers_of_iterations_estimates): Declare.
* tree.h (lower_bound_in_type, upper_bound_in_type): Declare.
* params.def (PARAM_MAX_ITERATIONS_TO_TRACK): New parameter.
* doc/invoke.texi (max-iterations-to-track): Document.
From-SVN: r84340
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