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tree-optimization/98428 - avoid pre-existing vectors for loop SLP

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It wasn't supposed to be enabled and appearantly copying around the
checking messed up the condition.

2021-01-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/98428
	* tree-vect-slp.c (vect_build_slp_tree_1): Properly reject
	vector lane extracts for loop vectorization.
This commit is contained in:
Richard Biener 2021-01-05 14:38:15 +01:00
parent 4ddee425b8
commit 26b5062be9
1 changed files with 2 additions and 3 deletions
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5
gcc/tree-vect-slp.c
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@ -1096,11 +1096,10 @@ vect_build_slp_tree_1 (vec_info *vinfo, unsigned char *swap,
&& rhs_code == BIT_FIELD_REF)
{
tree vec = TREE_OPERAND (gimple_assign_rhs1 (stmt), 0);
if (TREE_CODE (vec) != SSA_NAME
if (!is_a <bb_vec_info> (vinfo)
|| TREE_CODE (vec) != SSA_NAME
|| !types_compatible_p (vectype, TREE_TYPE (vec)))
{
if (is_a <bb_vec_info> (vinfo) && i != 0)
continue;
if (dump_enabled_p ())
dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
"Build SLP failed: "