The ZIR instruction `union_init_ptr` is renamed to `union_init`.
I made it always use by-value semantics for now, not taking the time to
invest in result location semantics, in case we decide to change the
rules for unions. This way is much simpler.
There is a new AIR instruction: union_init. This is for a comptime known
tag, runtime-known field value.
vector_init is renamed to aggregate_init, which solves a TODO comment.
Unless the pointer is a pointer to a function, if the pointee type
has zero-bits, we need to return `MCValue.none` as the `Decl` has
not been lowered to memory, and therefore, any GOT reference will be
wrong.
* fix alignment issues for consts with natural ABI alignment not
matching that of the `ldr` instruction in `aarch64` - solved by
preceeding the `ldr` with an additional `add` instruction to form
the full address before dereferencing the pointer.
* redo selection of segment/section for decls and consts based on
combined type and value
Rather than ping ponging between codegen and the linker to generate the symbols/atoms
for a local constant and its relocations. We now create all neccesary objects within the linker.
This simplifies the code as we can now simply call `lowerUnnamedConst` from anywhere in codegen,
allowing us to further improve lowering constants into .rodata so we do not have to sacrifice
lowering certain types such as decl_ref's where its type is a slice.
* AstGen: remove the setBlockBodyEliding function. This is no longer
needed after 63788b2a511eb87974065a052e2436b0c6202544.
* Sema: store_to_block_ptr instruction is handled as
store_to_inferred_ptr or store, as necessary.
Instead of explicitly setting lhs to .none,
check if the lhs instruction was analyzed.
This simpler approach also handles stores from nested blocks correctly.
As of 6249a24, align() is not allowed on packed struct fields
and as such the align(4) was removed from the first field of
EdidOverrideProtocolAttributes. The endgame here is packed struct
backed by explicit integers, in this case a u32, but until that
is implemented put the align(4) on the pointer to avoid breaking
someone's UEFI code in a hard to debug way.
