}
		}
		if !ok {
			t.Errorf("%s: have encoding %s, want %s", p, codeHex, hexes)
		}
	}

	if len(hexByLine) > 0 {
		var missing []string
		for key := range hexByLine {
			missing = append(missing, key)
		}
		sort.Strings(missing)
		for _, line := range missing {
			t.Errorf("%s: did not find instruction encoding", line)
		}
	}

}

func isHexes(s string) bool {
	if s == "" {

	BFXU	$40, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$-40, $4, R2       // ERROR "wrong width or LSB"
	BFX	$-2, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$4, R2, R5, R2     // ERROR "missing or wrong LSB"
	BFXU	$4, R2, R5         // ERROR "missing or wrong LSB"
	BFC	$12, $8, R2, R3    // ERROR "illegal combination"
	MOVB	R0>>8, R2          // ERROR "illegal shift"
	MOVH	R0<<16, R2         // ERROR "illegal shift"

	TLBI	ALLE3OS, ZR                                      // ERROR "extraneous register at operand 2"
	TLBI	VAE1IS                                           // ERROR "missing register at operand 2"
	TLBI	RVALE3                                           // ERROR "missing register at operand 2"
	DC	PLDL1KEEP                                        // ERROR "illegal argument"
	DC	VMALLE1IS                                        // ERROR "illegal argument"

	// Bizarre syntax: $frameSize-argSize is two words, not subtraction.
	// Both frameSize and argSize must be simple integers; only frameSize
	// can be negative.
	// The "-argSize" may be missing; if so, set it to objabi.ArgsSizeUnknown.
	// Parse left to right.
	op := operands[next]
	if len(op) < 2 || op[0].ScanToken != '$' {
		p.errorf("TEXT %s: frame size must be an immediate constant", name)
		return
	}