Revert patches.

Revert patches.

2022-03-01   Michael Meissner  <meissner@linux.ibm.com>

gcc/
	Revert patch.
	PR target/103109
	* config/rs6000/rs6000.md (su_int32): New code attribute.
	(<u>mul<mode><dmode>3): Convert into define_insn_and_split.
	(maddld<mode>4): Add generator function.
	(<u>mulditi3_<u>adddi3): New insn.
	(<u>mulditi3_add_const): New insn.
	(addti3): Convert into define_insn_and_split.
	(subti3): Likewise.

2022-02-25   Michael Meissner  <meissner@linux.ibm.com>

gcc/
	Revert patch.
	PR target/104698
	* config/rs6000/vsx.md (mtvsrdd_diti_w1): Delete.
	(extendditi2): Replace with code to deal with both GPR registers
	and with altivec registers.