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2014-12-10 Richard Biener <rguenther@suse.de>

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* tree-ssa-loop-im.c
	 (move_computations_dom_walker::before_dom_children): Clear
	 SSA_NAME_RANGE_INFO on moved stmts.

From-SVN: r218580
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Richard Biener 2014-12-10 14:20:43 +00:00 committed by Richard Biener
parent d170435892
commit 07faade69f
2 changed files with 18 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-12-10 Richard Biener <rguenther@suse.de>
* tree-ssa-loop-im.c
(move_computations_dom_walker::before_dom_children): Clear
SSA_NAME_RANGE_INFO on moved stmts.
2014-12-10 Martin Liska <mliska@suse.cz>
* sreal.c (sreal::shift_right): New implementation

12
gcc/tree-ssa-loop-im.c
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@ -1232,6 +1232,11 @@ move_computations_dom_walker::before_dom_children (basic_block bb)
COND_EXPR, t, arg0, arg1);
todo_ |= TODO_cleanup_cfg;
}
if (INTEGRAL_TYPE_P (TREE_TYPE (gimple_assign_lhs (new_stmt)))
&& (!ALWAYS_EXECUTED_IN (bb)
|| (ALWAYS_EXECUTED_IN (bb) != level
&& !flow_loop_nested_p (ALWAYS_EXECUTED_IN (bb), level))))
SSA_NAME_RANGE_INFO (gimple_assign_lhs (new_stmt)) = NULL;
gsi_insert_on_edge (loop_preheader_edge (level), new_stmt);
remove_phi_node (&bsi, false);
}
@ -1291,6 +1296,13 @@ move_computations_dom_walker::before_dom_children (basic_block bb)
}
}
gsi_remove (&bsi, false);
if (gimple_has_lhs (stmt)
&& TREE_CODE (gimple_get_lhs (stmt)) == SSA_NAME
&& INTEGRAL_TYPE_P (TREE_TYPE (gimple_get_lhs (stmt)))
&& (!ALWAYS_EXECUTED_IN (bb)
|| !(ALWAYS_EXECUTED_IN (bb) == level
|| flow_loop_nested_p (ALWAYS_EXECUTED_IN (bb), level))))
SSA_NAME_RANGE_INFO (gimple_get_lhs (stmt)) = NULL;
/* In case this is a stmt that is not unconditionally executed
when the target loop header is executed and the stmt may
invoke undefined integer or pointer overflow rewrite it to