RLDIMICC $0, R4, $7, R6         // 788601cd
	RLDC $0, R4, $15, R6            // 78860728
	RLDC R3, $32, $12, R4           // 7864030a
	RLDC R3, $8, $32, R4            // 78644028
	RLDCCC R3, $32, $12, R4         // 7864030b
	RLDCCC R3, $8, $32, R4          // 78644029
	RLDCCC $0, R4, $15, R6          // 78860729
	RLDCL $0, R4, $7, R6            // 78860770
	RLDCLCC $0, R4, $15, R6         // 78860721

}

// Merge (RLDICL [encoded] (SRDconst [s] x)) into (RLDICL [new_encoded] x)
// SRDconst on PPC64 is an extended mnemonic of RLDICL. If the input to an
// RLDICL is an SRDconst, and the RLDICL does not rotate its value, the two
// operations can be combined. This functions assumes the two opcodes can
// be merged, and returns an encoded rotate+mask value of the combined RLDICL.