387-3.c, [...]: Use -mtune=generic.

387-3.c, [...]: Use -mtune=generic.

	* gcc.target/i386/387-3.c, gcc.target/i386/387-4.c,
	gcc.target/i386/pr30970.c: Use -mtune=generic.
	* gcc.target/i386/avx2-vpaddb-3.c,
	gcc.target/i386/avx2-vpaddd-3.c, gcc.target/i386/avx2-vpaddq-3.c,
	gcc.target/i386/avx2-vpaddw-3.c, gcc.target/i386/avx2-vpmulld-3.c,
	gcc.target/i386/avx2-vpmullw-3.c, gcc.target/i386/avx2-vpsrad-3.c,
	gcc.target/i386/avx2-vpsraw-3.c, gcc.target/i386/avx2-vpsrld-3.c,
	gcc.target/i386/avx2-vpsrlw-3.c, gcc.target/i386/avx2-vpsubb-3.c,
	gcc.target/i386/avx2-vpsubd-3.c, gcc.target/i386/avx2-vpsubq-3.c,
	gcc.target/i386/avx2-vpsubw-3.c,
	gcc.target/i386/avx256-unaligned-load-1.c,
	gcc.target/i386/avx256-unaligned-load-4.c,
	gcc.target/i386/avx256-unaligned-store-1.c,
	gcc.target/i386/avx256-unaligned-store-2.c,
	gcc.target/i386/avx256-unaligned-store-4.c: Use
	-mno-prefer-avx128.

From-SVN: r209019