gcc/
	* dse.c (find_shift_sequence): Always choose an integer mode for
	new_mode.
	(replace_read): Require both the read and store mode to be
	integer ones.  Remove a then-redundant FLOAT_P check.

gcc/testsuite/
	* gcc.target/mips/dse-1.c: Disable.

From-SVN: r130039