edc83886d4
Summary: More SPIR-V related patches are being upstreamed. We should add support to detect when a binary file is SPIR-V. This will be used in the future when support for SPIR-V is added to the offloading runtime or more support for bundling. The magic number is described in the official documentation: https://registry.khronos.org/SPIR-V/specs/1.0/SPIRV.html#Magic. Notably, SPIR-V files are streams of 32-bit words. This means that the magic numbers differ depending on the endianness. Here we simply check the strandard and byte-reversed versions.