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tree-optimization/105394 - vector lowering of compares 

The following fixes missing handling of non-integer mode but
masked (SVE or MVE) compares in vector lowering by using the
appropriate mask element width to extract the components and
adjust the index.

2022-04-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/105394
	* tree-vect-generic.cc (expand_vector_condition): Adjust
	comp_width for non-integer mode masks as well.

(cherry picked from commit dfae0c5a29)
This commit is contained in:
Richard Biener 2022-04-29 11:54:45 +02:00
parent d71b9208f3
commit e229f9b8f5
1 changed files with 4 additions and 1 deletions
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gcc/tree-vect-generic.cc
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@ -1122,6 +1122,9 @@ expand_vector_condition (gimple_stmt_iterator *gsi, bitmap dce_ssa_names)
tree atype = build_nonstandard_integer_type (prec, 1);
a = gimplify_build1 (gsi, VIEW_CONVERT_EXPR, atype, a);
}
else if (!a_is_comparison
&& VECTOR_BOOLEAN_TYPE_P (TREE_TYPE (a)))
comp_width = vector_element_bits_tree (TREE_TYPE (a));
int nunits = nunits_for_known_piecewise_op (type);
vec_alloc (v, nunits);
@ -1148,7 +1151,7 @@ expand_vector_condition (gimple_stmt_iterator *gsi, bitmap dce_ssa_names)
build_zero_cst (TREE_TYPE (a)));
}
else
aa = tree_vec_extract (gsi, cond_type, a, width, index);
aa = tree_vec_extract (gsi, cond_type, a, comp_width, comp_index);
result = gimplify_build3 (gsi, COND_EXPR, inner_type, aa, bb, cc);
if (!CONSTANT_CLASS_P (result))
constant_p = false;