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re PR tree-optimization/93199 (Compile time hog in sink_clobbers)

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2019-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/93199
	c/
	* gimple-parser.c (c_parser_parse_gimple_body): Remove __PHI IFN
	permanently.

	* gimple-fold.c (rewrite_to_defined_overflow): Mark stmt modified.
	* tree-ssa-loop-im.c (move_computations_worker): Properly adjust
	virtual operand, also updating SSA use.
	* gimple-loop-interchange.cc (loop_cand::undo_simple_reduction):
	Update stmt after resetting virtual operand.
	(tree_loop_interchange::move_code_to_inner_loop): Likewise.

	* gimple-iterator.c (gsi_remove): When not removing the stmt
	permanently do not delink immediate uses or mark the stmt modified.

From-SVN: r280000
This commit is contained in:
Richard Biener 2020-01-08 12:49:14 +00:00 committed by Richard Biener
parent d597b9445f
commit f74c4b2c44
7 changed files with 34 additions and 7 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2019-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/93199
* gimple-fold.c (rewrite_to_defined_overflow): Mark stmt modified.
* tree-ssa-loop-im.c (move_computations_worker): Properly adjust
virtual operand, also updating SSA use.
* gimple-loop-interchange.cc (loop_cand::undo_simple_reduction):
Update stmt after resetting virtual operand.
(tree_loop_interchange::move_code_to_inner_loop): Likewise.
* gimple-iterator.c (gsi_remove): When not removing the stmt
permanently do not delink immediate uses or mark the stmt modified.
2020-01-08 Martin Liska <mliska@suse.cz>
* ipa-fnsummary.c (dump_ipa_call_summary): Use symtab_node::dump_name.

6
gcc/c/ChangeLog
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@ -1,3 +1,9 @@
2019-01-08 Richard Biener <rguenther@suse.de>
PR middle-end/93199
* gimple-parser.c (c_parser_parse_gimple_body): Remove __PHI IFN
permanently.
2020-01-01 Jakub Jelinek <jakub@redhat.com>
Update copyright years.

2
gcc/c/gimple-parser.c
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@ -327,7 +327,7 @@ c_parser_parse_gimple_body (c_parser *cparser, char *gimple_pass,
add_phi_arg (phi, gimple_call_arg (stmt, i + 1), e,
UNKNOWN_LOCATION);
}
gsi_remove (&gsi, false);
gsi_remove (&gsi, true);
}
/* Fill SSA name gaps, putting them on the freelist. */
for (unsigned i = 1; i < num_ssa_names; ++i)

1
gcc/gimple-fold.c
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@ -7380,6 +7380,7 @@ rewrite_to_defined_overflow (gimple *stmt)
gimple_assign_set_lhs (stmt, make_ssa_name (type, stmt));
if (gimple_assign_rhs_code (stmt) == POINTER_PLUS_EXPR)
gimple_assign_set_rhs_code (stmt, PLUS_EXPR);
gimple_set_modified (stmt, true);
gimple_seq_add_stmt (&stmts, stmt);
gimple *cvt = gimple_build_assign (lhs, NOP_EXPR, gimple_assign_lhs (stmt));
gimple_seq_add_stmt (&stmts, cvt);

8
gcc/gimple-iterator.c
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@ -558,16 +558,18 @@ gsi_remove (gimple_stmt_iterator *i, bool remove_permanently)
gimple *stmt = gsi_stmt (*i);
bool require_eh_edge_purge = false;
/* ??? Do we want to do this for non-permanent operation? */
if (gimple_code (stmt) != GIMPLE_PHI)
insert_debug_temps_for_defs (i);
/* Free all the data flow information for STMT. */
gimple_set_bb (stmt, NULL);
delink_stmt_imm_use (stmt);
gimple_set_modified (stmt, true);
if (remove_permanently)
{
/* Free all the data flow information for STMT. */
delink_stmt_imm_use (stmt);
gimple_set_modified (stmt, true);
if (gimple_debug_nonbind_marker_p (stmt))
/* We don't need this to be exact, but try to keep it at least
close. */

9
gcc/gimple-loop-interchange.cc
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@ -879,6 +879,7 @@ loop_cand::undo_simple_reduction (reduction_p re, bitmap dce_seeds)
if (re->producer != NULL)
{
gimple_set_vuse (re->producer, NULL_TREE);
update_stmt (re->producer);
from = gsi_for_stmt (re->producer);
gsi_remove (&from, false);
gimple_seq_add_stmt_without_update (&stmts, re->producer);
@ -920,6 +921,7 @@ loop_cand::undo_simple_reduction (reduction_p re, bitmap dce_seeds)
gimple_set_vdef (re->consumer, NULL_TREE);
gimple_set_vuse (re->consumer, NULL_TREE);
gimple_assign_set_rhs1 (re->consumer, re->next);
update_stmt (re->consumer);
from = gsi_for_stmt (re->consumer);
to = gsi_for_stmt (SSA_NAME_DEF_STMT (re->next));
gsi_move_after (&from, &to);
@ -1248,14 +1250,17 @@ tree_loop_interchange::move_code_to_inner_loop (class loop *outer,
continue;
}
if (gimple_vuse (stmt))
gimple_set_vuse (stmt, NULL_TREE);
if (gimple_vdef (stmt))
{
unlink_stmt_vdef (stmt);
release_ssa_name (gimple_vdef (stmt));
gimple_set_vdef (stmt, NULL_TREE);
}
if (gimple_vuse (stmt))
{
gimple_set_vuse (stmt, NULL_TREE);
update_stmt (stmt);
}
reset_debug_uses (stmt);
gsi_move_before (&gsi, &to);

3
gcc/tree-ssa-loop-im.c
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@ -1231,7 +1231,8 @@ move_computations_worker (basic_block bb)
gphi *phi = gsi2.phi ();
if (virtual_operand_p (gimple_phi_result (phi)))
{
gimple_set_vuse (stmt, PHI_ARG_DEF_FROM_EDGE (phi, e));
SET_USE (gimple_vuse_op (stmt),
PHI_ARG_DEF_FROM_EDGE (phi, e));
break;
}
}