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Fix PRE NEW_SETS guarding 

Accesses to NEW_SETS should be properly guarded.  Committed
as obvious.

2020-11-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/97623
	* tree-ssa-pre.c (create_expression_by_pieces): Guard
	NEW_SETS access.
	(insert_into_preds_of_block): Likewise.
This commit is contained in:
Richard Biener 2020-11-11 18:15:57 +01:00
parent 505ea90904
commit 2e8b368c3d
1 changed files with 4 additions and 3 deletions
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7
gcc/tree-ssa-pre.c
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@ -3064,7 +3064,8 @@ create_expression_by_pieces (basic_block block, pre_expr expr,
vn_info->value_id = get_next_value_id ();
nameexpr = get_or_alloc_expr_for_name (forcedname);
add_to_value (vn_info->value_id, nameexpr);
bitmap_value_replace_in_set (NEW_SETS (block), nameexpr);
if (NEW_SETS (block))
bitmap_value_replace_in_set (NEW_SETS (block), nameexpr);
bitmap_value_replace_in_set (AVAIL_OUT (block), nameexpr);
}
@ -3231,8 +3232,8 @@ insert_into_preds_of_block (basic_block block, unsigned int exprnum,
bitmap_insert_into_set (PHI_GEN (block), newphi);
bitmap_value_replace_in_set (AVAIL_OUT (block),
newphi);
bitmap_insert_into_set (NEW_SETS (block),
newphi);
if (NEW_SETS (block))
bitmap_insert_into_set (NEW_SETS (block), newphi);
/* If we insert a PHI node for a conversion of another PHI node
in the same basic-block try to preserve range information.