re PR c/11369 (too relaxed checking with -Wstrict-prototypes)

re PR c/11369 (too relaxed checking with -Wstrict-prototypes)

	PR target/11369
	* i386.c (ix86_expand_carry_flag_compare): Validate operand.

	PR target/11031
	* i386.c (const_0_to_3_operand, const_0_to_7_operand,
	const_0_to_15_operand, const_0_to_255_operand): New predicates.
	* i386.h (PREDICATE_CODES): Add these.
	* i386.c (pinsrw and pextrw patterns): Use them.

	PR target/10984
	* i386.c (ix86_expand_binop_builtin): Behave sanely for VOIDmodes.

	PR target/8869
	* expr.c (convert_modes): Deal properly with integer to vector
	constant conversion.

	PR target/8871
	* i386.md (zero_extendsidi2*): Add MMX and SSE alternatives.

From-SVN: r70751