[SYCL] Rename DoubleGRF to LargeGRF

[sarnex]

This change renames double GRF to large GRF both for users and internally in the compiler. We're doing this because we got direct feedback from customer facing engineers that we should use the large GRF terminology, and it also makes the naming consistent with other compiler work we are doing.

For the user,

set_kernel_properties(kernel_properties::use_double_grf);

still works, it will just throw a deprecated warning and will be removed in a future release.

The new way is

set_kernel_properties(kernel_properties::use_large_grf);

There should be no ABI break because we still check the previous image property name in the program manager, so applications built with an old compiler work using the runtime from a new compiler. I confirmed this with manual testing.

I will update the system test here to test the new flag as well: https://github.com/intel/llvm-test-suite/blob/intel/SYCL/DeviceCodeSplit/double-grf.cpp

Signed-off-by: Sarnie, Nick nick.sarnie@intel.com

[sarnex]

@kbobrovs @asudarsa Hey guys, mind taking a look at this one? Thanks

[asudarsa]

Will check before EOD. Thanks

[steffenlarsen]

Runtime changes LGTM.

[asudarsa]

LGTM. Thanks