re PR target/89369 (pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 ...

re PR target/89369 (pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203)

	PR target/89369
	* config/s390/s390.md (*r<noxa>sbg_<mode>_srl_bitmask,
	*r<noxa>sbg_<mode>_sll, *r<noxa>sbg_<mode>_srl): Don't construct
	pattern in a temporary buffer.
	(*r<noxa>sbg_sidi_srl): Likewise.  Always use 32 as I3 rather
	than 64-operands[2].

	* gcc.c-torture/execute/pr89369.c: New test.
	* gcc.target/s390/md/rXsbg_mode_sXl.c (rosbg_si_srl,
	rxsbg_si_srl): Expect last 3 operands 32,63,62 rather than
	34,63,62.

From-SVN: r268984