* doc/invoke.texi: Document -mrtm option.
	  * common/config/i386/i386-common.c (OPTION_MASK_ISA_RTM_SET):
	  New.
	  (OPTION_MASK_ISA_RTM_UNSET): Ditto.
	  (ix86_handle_option): Handle OPT_mrtm.
	  * config.gcc (i[34567]86-*-*): Add rtmintrin.h and
	  xtestintrin.h.
	  (x86_64-*-*): Ditto.
	  * i386-builtin-types.def (INT_FTYPE_VOID): New.
	  * config/i386/i386-c.c (ix86_target_macros_internal): Define
	  __RTM__ if needed.
	  (ix86_target_string): Define -mrtm option.
	  (PTA_RTM): New.
	  (ix86_option_override_internal): Extend "corei7-avx" with
	  RTM option. Handle new option.
	  (ix86_valid_target_attribute_inner_p): Add OPT_mrtm.
	  (ix86_builtins): Add IX86_BUILTIN_XBEGIN, IX86_BUILTIN_XEND,
	  IX86_BUILTIN_XTEST.
	  (bdesc_special_args): Ditto.
	  (ix86_init_mmx_sse_builtins): Add IX86_BUILTIN_XABORT.
	  (ix86_expand_special_args_builtin): Handle new built-in type.
	  (ix86_expand_builtin): Handle XABORT instruction.
	  * config/i386/i386.h (TARGET_RTM): New.
	  * config/i386/i386.md (UNSPECV_XBEGIN): New.
	  (UNSPECV_XEND): Ditto.
	  (UNSPECV_XABORT): Ditto.
	  (UNSPECV_XTEST): Ditto.
	  (xbegin): Ditto.
	  (xbegin_1): Ditto.
	  (xend): Ditto.
	  (xabort): Ditto
	  (xtest): Ditto.
	  (xtest_1): Ditto.
	  * config/i386/i386.opt (mrtm): New.
	  * config/i386/immintrin.h: Include rtmintrin.h and
	  xtestintrin.h.
	  * config/i386/rtmintrin.h: New header.
	  * config/i386/xtestintrin.h: Ditto.

testsuite/ChangeLog entry:
    * gcc.target/i386/rtm-xabort-1.c: New.
    * gcc.target/i386/rtm-xbegin-1.c: Ditto.
    * gcc.target/i386/rtm-xend-1.c: Ditto.
    * gcc.target/i386/rtm-xtest-1.c: Ditto.
    * gcc.target/i386/sse-12.c: Test RTM intrinsics.
    * 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.

From-SVN: r185218