// TEQ
	TEQ	$255, R7             // ff0037e3
	TEQ	$4278190080, R9      // ff0439e3
	TEQ	R9<<30, R7           // 090f37e1
	TEQ	R9>>30, R7           // 290f37e1
	TEQ	R9->30, R7           // 490f37e1
	TEQ	R9@>30, R7           // 690f37e1
	TEQ	R9<<R8, R7           // 190837e1
	TEQ	R9>>R8, R7           // 390837e1
	TEQ	R9->R8, R7           // 590837e1
	TEQ	R9@>R8, R7           // 790837e1

(TST x (SRL y z)) => (TSTshiftRLreg x y z)
(TST x (SRA y z)) => (TSTshiftRAreg x y z)
(TEQ x (SLLconst [c] y)) => (TEQshiftLL x y [c])
(TEQ x (SRLconst [c] y)) => (TEQshiftRL x y [c])
(TEQ x (SRAconst [c] y)) => (TEQshiftRA x y [c])
(TEQ x (SLL y z)) => (TEQshiftLLreg x y z)
(TEQ x (SRL y z)) => (TEQshiftRLreg x y z)
(TEQ x (SRA y z)) => (TEQshiftRAreg x y z)
(CMN x (SLLconst [c] y)) => (CMNshiftLL x y [c])

		// remove the NOTUSETMP flag in optab.
		o1 = OP_SRR(c.opirr(-ASLLV), 0, p.From.Reg, p.To.Reg)
		o2 = OP_SRR(c.opirr(-ASRLV), 0, p.To.Reg, p.To.Reg)

	case 15: /* teq $c r,r */
		r := p.Reg
		if r == obj.REG_NONE {
			r = REGZERO
		}
		v := c.regoff(&p.From)
		/* only use 10 bits of trap code */
		o1 = OP_IRR(c.opirr(p.As), (uint32(v)&0x3FF)<<6, r, p.To.Reg)

		o2 = OP_16IRR(c.opirr(-ASRLV), uint32(32)&0x3f, uint32(p.To.Reg), uint32(p.To.Reg))

	case 15: // teq $c r,r
		v := c.regoff(&p.From)
		r := int(p.Reg)
		if r == 0 {
			r = REGZERO
		}
		/*
			teq c, r1, r2
			fallthrough
			==>
			bne r1, r2, 2
			break c
			fallthrough
		*/
		if p.As == ATEQ {

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