This reapplies
195d8ac26d
[DirectX] Fix DXIL part header version encoding. The endian issue was
fixed by
f42117c851.
Move MinorVersion be the lower 8 bit.
Set DXIL version in DXContainerObjectWriter::writeObject.
Fixes#89952
Avoid using bitfield in dxbc::ProgramHeader.
It could potentially be read incorrectly on any host depending on the
compiler.
From [C++17's
[class.bit]](https://timsong-cpp.github.io/cppwp/n4659/class.bit#1)
> Bit-fields are packed into some addressable allocation unit. [ Note:
Bit-fields straddle allocation units on some machines and not on others.
Bit-fields are assigned right-to-left on some machines, left-to-right on
others. — end note ]
For #91793
Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class as opposed to an
enum. This patch replaces support::{big,little,native} with
llvm::endianness::{big,little,native}.
PartSize for a part in dx container is only the size of the content of the part, not include size of the PartHeader.
Differential Revision: https://reviews.llvm.org/D141207
DXContainer files have a handful of sections that need to be written.
This adds a pass to write the section data into IR globals, and writes
the shader flag data into a global.
The test cases here verify that the shader flags are correctly written
from the IR into the global and emitted to the DXContainer.
This change also fixes a bug in the MCDXContainerWriter, where the size
of the dxbc::ProgramHeader was not being included in the part offset
calcuations. This is verified to be working by the new testcases where
obj2yaml can properly dump part data for parts after the DXIL part.
Resolves issue #57742 (https://github.com/llvm/llvm-project/issues/57742)
Reviewed By: python3kgae
Differential Revision: https://reviews.llvm.org/D135793
DXContainer files resemble traditional object files in that they are
comprised of parts which resemble sections. Adding DXContainer as an
object file format in the MC layer will allow emitting DXContainer
objects through the normal object emission pipeline.
Differential Revision: https://reviews.llvm.org/D127165
