i386.c (ix86_expand_call): Generate MS->SYSV extra clobbered registers using clobber_reg.

i386.c (ix86_expand_call): Generate MS->SYSV extra clobbered registers using clobber_reg.

	* config/i386/i386.c (ix86_expand_call): Generate MS->SYSV extra
	clobbered registers using clobber_reg.  Remove UNSPEC decoration.
	* config/i386/i386.md (unspec) <UNSPEC_MS_TO_SYSV_CALL>: Remove.
	(*call_rex64_ms_sysv): Remove.
	(*call_value_rex64_ms_sysv): Ditto.
	* config/i386/predicates.md (call_rex64_ms_sysv_operation): Remove.

testsuite/ChangeLog:

	* gcc.target/i386/avx-vzeroupper-16.c (dg-final): Remove check
	for call_value_rex64_ms_sysv.
	* gcc.target/i386/avx-vzeroupper-17.c (dg-final): Ditto.
	* gcc.target/i386/avx-vzeroupper-18.c (dg-final): Remove check
	for call_rex64_ms_sysv.

From-SVN: r215428