d: Use CONSTRUCTOR_ZERO_PADDING_BITS in the D FE [PR117832]

Adds a new wrapper function for `build_constructor', and calls it
instead to ensure that all CONSTRUCTOR nodes explicitly created by the
front-end have CONSTRUCTOR_ZERO_PADDING_BITS set.

Some places may not be necessary as it's guaranteed for there to be no
padding in the type, such as D dynamic arrays.  Other places this gets
turned into a double-memset when optimizations are turned off, as the
front-end already generates a memset call to zero out all padding on
initializing a variable.  The optimizer sees through this so will
correctly clear all bits once, so this can be improved later as-needed.

	PR d/117832

gcc/d/ChangeLog:

	* d-tree.h (build_padded_constructor): New prototype.
	* d-codegen.cc (build_padded_constructor): New function.
	(d_array_value): Call it.
	(build_memset_call): Likewise.
	(build_struct_literal): Likewise.
	(underlying_complex_expr): Likewise.
	(build_array_from_val): Likewise.
	(build_array_from_exprs): Likewise.
	(d_build_call): Likewise.
	(get_frame_for_symbol): Likewise.
	* d-convert.cc (convert_for_rvalue): Likewise.
	(convert_for_assignment): Likewise.
	* decl.cc (class DeclVisitor): Likewise.
	* expr.cc (class ExprVisitor): Likewise.
	* modules.cc (layout_moduleinfo): Likewise.
	* typeinfo.cc (class TypeInfoVisitor): Likewise.

0 files changed, 0 insertions, 0 deletions