[SYCL][NFC] Generalize OpenCL C kernel_compiler SPIR-V naming to IL (#23035)
The online OpenCL C path in sycl_ext_oneapi_kernel_compiler asks ocloc
for
SPIR-V, but the SPIR-V-specific naming in this code is incidental: the
bytes
ocloc hands back are just passed through to urProgramCreateWithIL.
Rename the
API and locals to the generic "IL" spelling and hoist the two
SPIR-V-specific
ocloc details (the -spv_only output-selection flag and the .spv output
extension) into named locals at their point of use.
spirv_vec_t -> il_vec_t
OpenCLC_to_SPIRV -> OpenCLC_to_IL
SpirV -> IL
No functional change intended: the flag and extension keep their current
values, so ocloc is invoked identically and the same output is
collected.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>