tree-optimization/107896 - allow v2si to dimode unpacks
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Commit Message
The following avoids ICEing for V2SI -> DImode vec_unpacks_lo.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
PR tree-optimization/107896
* tree-vect-stmts.cc (supportable_widening_operation):
Handle non-vector mode intermediate mode.
---
gcc/tree-vect-stmts.cc | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
@@ -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)