mips.h (ISA_HAS_SEQ_SNE): New macro.

	* config/mips/mips.h (ISA_HAS_SEQ_SNE): New macro.
	* config/mips/mips.c (mips_expand_scc): Also expand seq and sne if
	second operand is a reg_imm10_operand.
	* config/mips/mips.md (*seq_<GPR:mode><GPR2:mode>_seq,
	*sne_<GPR:mode><GPR2:mode>_sne): New patterns.
	(*seq_<GPR:mode><GPR2:mode>): Rename to
	*seq_zero_<GPR:mode><GPR2:mode>.  Don't match if
	ISA_HAS_SEQ_SNE.
	(*seq_<GPR:mode><GPR2:mode>_mips16): Rename to
	*seq_zero_<GPR:mode><GPR2:mode>_mip16.  Don't match if
	ISA_HAS_SEQ_SNE.
	(*sne_<GPR:mode><GPR2:mode>): Rename to
	*sne_zero_<GPR:mode><GPR2:mode>.  Don't match if
	ISA_HAS_SEQ_SNE.

testsuite/
	* gcc.target/mips/seq-1.c: New test.
	* gcc.target/mips/octeon-seq-1.c: New test.
	* gcc.target/mips/octeon-seq-2.c: New test.
	* gcc.target/mips/octeon-seq-3.c: New test.
	* gcc.target/mips/octeon-seq-4.c: New test.
	* gcc.target/mips/scc-2.c: Also pass on sltiu.
	* gcc.target/mips/scc-3.c: Likewise.

From-SVN: r140010