* common/config/i386/i386-common.c (OPTION_MASK_ISA_SGX_UNSET): New.
	(OPTION_MASK_ISA_SGX_SET): New.
	(ix86_handle_option): Handle OPT_msgx.
	* config.gcc: Added sgxintrin.h.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect sgx.
	* config/i386/i386-c.c (ix86_target_macros_internal): Define __SGX__.
	* config/i386/i386.c (ix86_target_string): Add -msgx.
	(PTA_SGX): New.
	(ix86_option_override_internal): Handle new options.
	(ix86_valid_target_attribute_inner_p): Add sgx.
	* config/i386/i386.h (TARGET_SGX, TARGET_SGX_P): New.
	* config/i386/i386.opt: Add msgx.
	* config/i386/sgxintrin.h: New file.
	* config/i386/x86intrin.h: Add sgxintrin.h.

testsuite/ChangeLog:

	* gcc.target/i386/sgx.c New test.
	* gcc.target/i386/sse-12.c: Add -msgx.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-14.c: Ditto.
	* gcc.target/i386/sse-22.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* g++.dg/other/i386-2.C: Ditto.
	* g++.dg/other/i386-3.C: Ditto.


Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>

From-SVN: r244339