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Simplify PRE fix 

The following reverts a part of the PR103037 fix which is no longer necessary
after the fix for PR104700.  That makes the possible cummulative backport
smaller.

2022-02-28  Richard Biener  <rguenther@suse.de>

	* tree-ssa-pre.cc (compute_avail): Revert part of last change.
This commit is contained in:
Richard Biener 2022-02-28 12:21:19 +01:00
parent 37b583b9d7
commit 800b3191c7
1 changed files with 1 additions and 8 deletions
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9
gcc/tree-ssa-pre.cc
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@ -3993,14 +3993,7 @@ compute_avail (function *fun)
FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_DEF)
{
pre_expr e = get_or_alloc_expr_for_name (op);
unsigned value_id = get_expr_value_id (e);
if (value_id_constant_p (value_id))
{
get_or_alloc_expr_for_constant (VN_INFO (op)->valnum);
continue;
}
add_to_value (value_id, e);
add_to_value (get_expr_value_id (e), e);
bitmap_insert_into_set (TMP_GEN (block), e);
bitmap_value_insert_into_set (AVAIL_OUT (block), e);
}