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This patch extends the tree-level folding of variable-length vectors so that it can also be used on rtxes. The first step is to move the tree_vector_builder new_unary/binary_operator routines to the parent vector_builder class (which in turn means adding a new template parameter). The second step is to make simplify-rtx.c use a direct rtx analogue of the VECTOR_CST handling in fold-const.c. 2019-07-29 Richard Sandiford <richard.sandiford@arm.com> gcc/ * vector-builder.h (vector_builder): Add a shape template parameter. (vector_builder::new_unary_operation): New function, generalizing the old tree_vector_builder function. (vector_builder::new_binary_operation): Likewise. (vector_builder::binary_encoded_nelts): Likewise. * int-vector-builder.h (int_vector_builder): Update template parameters to vector_builder. (int_vector_builder::shape_nelts): New function. * rtx-vector-builder.h (rtx_vector_builder): Update template parameters to vector_builder. (rtx_vector_builder::shape_nelts): New function. (rtx_vector_builder::nelts_of): Likewise. (rtx_vector_builder::npatterns_of): Likewise. (rtx_vector_builder::nelts_per_pattern_of): Likewise. * tree-vector-builder.h (tree_vector_builder): Update template parameters to vector_builder. (tree_vector_builder::shape_nelts): New function. (tree_vector_builder::nelts_of): Likewise. (tree_vector_builder::npatterns_of): Likewise. (tree_vector_builder::nelts_per_pattern_of): Likewise. * tree-vector-builder.c (tree_vector_builder::new_unary_operation) (tree_vector_builder::new_binary_operation): Delete. (tree_vector_builder::binary_encoded_nelts): Likewise. * simplify-rtx.c: Include rtx-vector-builder.h. (distributes_over_addition_p): New function. (simplify_const_unary_operation) (simplify_const_binary_operation): Generalize handling of vector constants to include variable-length vectors. (test_vector_ops_series): Add more tests. From-SVN: r273867
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