libgccjit: Add support for TLS variable [PR95415]

libgccjit: Add support for TLS variable [PR95415]

2021-12-11  Antoni Boucher  <bouanto@zoho.com>

gcc/jit/
	PR target/95415
	* docs/topics/compatibility.rst (LIBGCCJIT_ABI_17): New ABI
	tag.
	* docs/topics/expressions.rst: Add document for the function
	gcc_jit_lvalue_set_tls_model.
	* jit-playback.h: New function (set_tls_model).
	* jit-recording.c: New function (set_tls_model), new
	variables (tls_models and tls_model_enum_strings) and support
	for setting the tls model.
	* jit-recording.h: New function (set_tls_model) and new
	field m_tls_model.
	* libgccjit.c: New function (gcc_jit_lvalue_set_tls_model).
	* libgccjit.h: New function (gcc_jit_lvalue_set_tls_model)
	and new enum (gcc_jit_tls_model).
	* libgccjit.map (LIBGCCJIT_ABI_17): New ABI tag.

gcc/testsuite/
	PR target/95415
	* jit.dg/all-non-failing-tests.h: Add test-tls.c.
	* jit.dg/test-tls.c: New test.