for i, s := range x86.Anames {
		if obj.As(i) >= obj.A_ARCHSPECIFIC {
			instructions[s] = obj.As(i) + obj.ABaseAMD64
		}
	}
	// Annoying aliases.
	instructions["JA"] = x86.AJHI   /* alternate */
	instructions["JAE"] = x86.AJCC  /* alternate */
	instructions["JB"] = x86.AJCS   /* alternate */
	instructions["JBE"] = x86.AJLS  /* alternate */
	instructions["JC"] = x86.AJCS   /* alternate */

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