Complete change to resolve pr90275.

	PR rtl-optimization/90275
	* cse.c (cse_insn): Delete no-op register moves too.

gcc/ChangeLog

+2020-03-12  Richard Sandiford  <richard.sandiford@arm.com>
+
+	PR rtl-optimization/90275
+	* cse.c (cse_insn): Delete no-op register moves too.
+
 2020-03-18  Martin Sebor  <msebor@redhat.com>
 
 	PR ipa/92799

gcc/cse.c

@@ -5329,7 +5329,6 @@ cse_insn (rtx_insn *insn)
 	  else if (n_sets == 1
 		   && !CALL_P (insn)
 		   && (MEM_P (trial) || REG_P (trial))
-		   && MEM_P (dest)
 		   && rtx_equal_p (trial, dest)
 		   && !side_effects_p (dest)
 		   && (cfun->can_delete_dead_exceptions