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tree-optimization/107896 - allow v2si to dimode unpacks

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The following avoids ICEing for V2SI -> DImode vec_unpacks_lo.

	PR tree-optimization/107896
	* tree-vect-stmts.cc (supportable_widening_operation):
	Handle non-vector mode intermediate mode.
This commit is contained in:
Richard Biener 2022-11-28 17:26:15 +01:00
parent 26aff453bf
commit 2200b70546
1 changed files with 5 additions and 2 deletions
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7
gcc/tree-vect-stmts.cc
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@ -12194,9 +12194,8 @@ supportable_widening_operation (vec_info *vinfo,
if (VECTOR_BOOLEAN_TYPE_P (prev_type))
intermediate_type
= vect_halve_mask_nunits (prev_type, intermediate_mode);
else
else if (VECTOR_MODE_P (intermediate_mode))
{
gcc_assert (VECTOR_MODE_P (intermediate_mode));
tree intermediate_element_type
= lang_hooks.types.type_for_mode (GET_MODE_INNER (intermediate_mode),
TYPE_UNSIGNED (prev_type));
@ -12204,6 +12203,10 @@ supportable_widening_operation (vec_info *vinfo,
= build_vector_type_for_mode (intermediate_element_type,
intermediate_mode);
}
else
intermediate_type
= lang_hooks.types.type_for_mode (intermediate_mode,
TYPE_UNSIGNED (prev_type));
if (VECTOR_BOOLEAN_TYPE_P (intermediate_type)
&& VECTOR_BOOLEAN_TYPE_P (prev_type)