re PR target/83488 (ICE on a CET test-case)

re PR target/83488 (ICE on a CET test-case)

	PR target/83488
	* config/i386/i386.c (ix86_target_string): Move -mavx512vbmi2 and
	-mshstk entries from isa_opts2 to isa_opts and -mhle, -mmovbe,
	-mclzero and -mmwaitx entries from isa_opts to isa_opts2.
	(ix86_option_override_internal): Adjust for
	OPTION_MASK_ISA_{HLE,MOVBE,CLZERO,MWAITX} moving to ix86_isa_flags2
	and OPTION_MASK_ISA_SHSTK moving to ix86_isa_flags.
	(BDESC_VERIFYS): Remove SPECIAL_ARGS2 related checks.
	(ix86_init_mmx_sse_builtins): Remove bdesc_special_args2 handling.
	Use def_builtin2 instead of def_builtin for OPTION_MASK_ISA_MWAITX
	and OPTION_MASK_ISA_CLZERO builtins.  Use def_builtin instead of
	def_builtin2 for CET builtins.
	(ix86_expand_builtin): Remove bdesc_special_args2 handling.  Fix
	up formatting in IX86_BUILTIN_RDPID code.
	* config/i386/i386-builtin.def: Move VBMI2 builtins from SPECIAL_ARGS2
	section to SPECIAL_ARGS and from ARGS2 section to ARGS.
	* config/i386/i386.opt (mavx512vbmi2, mshstk): Move from
	ix86_isa_flags2 to ix86_isa_flags.
	(mhle, mmovbe, mclzero, mmwaitx): Move from ix86_isa_flags to
	ix86_isa_flags2.
	* config/i386/i386-c.c (ix86_target_macros_internal): Check for
	OPTION_MASK_ISA_{CLZERO,MWAITX} in isa_flag2 instead of isa_flag.
	Check for OPTION_MASK_ISA_{SHSTK,AVX512VBMI2} in isa_flag instead
	of isa_flag2.
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512VBMI2_SET):
	Or in OPTION_MASK_ISA_AVX512F_SET.
	(OPTION_MASK_ISA_AVX512F_UNSET): Or in
	OPTION_MASK_ISA_AVX512VBMI2_UNSET.
	(ix86_handle_option): Adjust for
	OPTION_MASK_ISA_{SHSTK,AVX512VBMI2}_*SET being in ix86_isa_flags
	and OPTION_MASK_ISA_{MOVBE,MWAITX,CLZERO}_*SET in ix86_isa_flags2.

	* gcc.target/i386/pr83488.c: New test.

From-SVN: r255937