Functions
tree	fold_const_aggregate_ref_1 (tree, tree(*)(tree))
tree	fold_const_aggregate_ref (tree)
tree	gimple_fold_stmt_to_constant_1 (gimple, tree(*)(tree))
tree	gimple_fold_stmt_to_constant (gimple, tree(*)(tree))

Function Documentation

tree fold_const_aggregate_ref ( tree )

tree fold_const_aggregate_ref_1	(	tree	t,
		tree(*)(tree)	valueize
	)

Return the tree representing the element referenced by T if T is an
   ARRAY_REF or COMPONENT_REF into constant aggregates valuezing SSA
   names using VALUEIZE.  Return NULL_TREE otherwise.

References array_ref_element_size(), array_ref_low_bound(), build_zero_cst(), double_int::fits_shwi(), fold_const_aggregate_ref_1(), fold_ctor_reference(), fold_read_from_constant_string(), get_base_constructor(), get_ref_base_and_extent(), get_symbol_constant_value(), host_integerp(), HOST_WIDE_INT, offset, tcc_declaration, and double_int::to_shwi().

Referenced by fold_const_aggregate_ref(), fold_const_aggregate_ref_1(), and gimple_fold_stmt_to_constant_1().

tree gimple_fold_stmt_to_constant	(	gimple	stmt,
		tree(*)(tree)	valueize
	)

Fold STMT to a constant using VALUEIZE to valueize SSA names.
   Returns NULL_TREE if folding to a constant is not possible, otherwise
   returns a constant according to is_gimple_min_invariant.

tree gimple_fold_stmt_to_constant_1	(	gimple	stmt,
		tree(*)(tree)	valueize
	)

Fold STMT to a constant using VALUEIZE to valueize SSA names.

   Either NULL_TREE, a simplified but non-constant or a constant
   is returned.

   ???  This should go into a gimple-fold-inline.h file to be eventually
   privatized with the single valueize function used in the various TUs
   to avoid the indirect function call overhead.

References build_call_array_loc(), build_fold_addr_expr_loc(), build_invariant_address(), decl_address_invariant_p(), fold_binary_loc(), fold_call_expr(), fold_const_aggregate_ref_1(), fold_ternary_loc(), fold_unary_ignore_overflow_loc(), fold_unary_loc(), get_addr_base_and_unit_offset_1(), get_gimple_rhs_class(), get_symbol_constant_value(), gimple_assign_lhs(), gimple_assign_rhs1(), gimple_assign_rhs2(), gimple_assign_rhs3(), gimple_assign_rhs_code(), GIMPLE_BINARY_RHS, gimple_call_arg(), gimple_call_fn(), gimple_call_internal_p(), gimple_call_num_args(), gimple_call_return_type(), gimple_expr_type(), gimple_location(), GIMPLE_SINGLE_RHS, GIMPLE_TERNARY_RHS, GIMPLE_UNARY_RHS, HOST_WIDE_INT, is_gimple_min_invariant(), offset, tcc_declaration, tcc_reference, and unshare_expr().

Referenced by ccp_fold(), gimple_fold_stmt_to_constant(), and try_to_simplify().

Functions

Function Documentation