i386.c (ix86_fold_builtin): Handle IX86_BUILTIN_BEXTR{,I}{32,64}...

i386.c (ix86_fold_builtin): Handle IX86_BUILTIN_BEXTR{,I}{32,64}...

	* config/i386/i386.c (ix86_fold_builtin): Handle
	IX86_BUILTIN_BEXTR{,I}{32,64}, IX86_BUILTIN_BZHI{32,64},
	IX86_BUILTIN_PDEP{32,64} and IX86_BUILTIN_PEXT{32,64}.
	(ix86_gimple_fold_builtin): Handle IX86_BUILTIN_BZHI{32,64},
	IX86_BUILTIN_PDEP{32,64} and IX86_BUILTIN_PEXT{32,64}.

	* gcc.target/i386/bmi2-pext-1.c: New test.
	* gcc.target/i386/bmi2-pdep-1.c: New test.
	* gcc.target/i386/bmi2-bzhi-3.c: New test.
	* gcc.target/i386/tbm-bextri-1.c: New test.
	* gcc.target/i386/bmi-bextr-6.c: New test.

From-SVN: r241465