nobackwardtail:
	BC	4, 5, LR		// blelr cr1, return if DWORDS == 0
	SRDCC	$2,DWORDS,QWORDS	// Compute number of 32B blocks and compare to 0
	BNE	backward32setup		// If QWORDS != 0, start the 32B copy loop.

backward24:
	// DWORDS is a value between 1-3.
	CMP	DWORDS, $2

	MOVD 	-8(SRC), TMP
	MOVD 	TMP, -8(TGT)
	BC	12, 0, LR		// bltlr, return if DWORDS == 1

	MOVD 	-16(SRC), TMP
	MOVD 	TMP, -16(TGT)

Russ Cox <******@****.***> 1648990796 -0400

    }

    private String makeName(String... words) {
        int expectedLength = 0;
        for (String word : words) {
            if (word != null) {
                expectedLength += word.length();
            }
        }
        StringBuilder builder = new StringBuilder(expectedLength);
        for (String word : words) {
            if (word == null || word.length() == 0) {
                continue;

        toWords("") == ""
        toWords("word") == "word"
        toWords("twoWords") == "two words"
        toWords("TwoWords") == "two words"
        toWords("two words") == "two words"
        toWords("Two Words") == "two words"
        toWords(" Two  \t words\n") == "two words"
        toWords("two_words") == "two words"
        toWords("two.words") == "two words"
        toWords("two,words") == "two words"

    private final boolean terminal;
    private final Trie[] transitions;

    public static Trie from(String... words) {
        return from(Arrays.asList(words));
    }

    public static Trie from(Iterable<String> words) {
        Builder builder = new Builder();
        for (String word : words) {
            builder.addWord(word);
        }
        return builder.build();
    }

    public static Builder builder() {

        result.add(sb.toString());
        // lines
        for (String line : lines) {
            sb.setLength(0);
            String[] words = S_FILTER.split(line);
            for (String word : words) {
                if (sb.length() >= remainder - word.length() - (sb.length() > 0 ? 1 : 0)) {
                    repeat(sb, ' ', remainder - sb.length());
                    result.add(BOX_CHAR + " " + sb + " " + BOX_CHAR);

    .386
    .model    flat

PUBLIC    _sum
_TEXT     SEGMENT
_sum    PROC
    mov    eax, DWORD PTR 4[esp]
    add    eax, DWORD PTR 8[esp]
    ret    0
_sum    ENDP
_TEXT   ENDS

        "nut",
        "store",
        "finger"
    ]

    private final Map<String, String> mappingCache = [:].withDefault {
        def size = mappingCache.size()
        size >WORDS.size() ? "word${size}" : WORDS[size]
    }

    /**
     * Converts an operation dumped as JSON into code which can be used to
     * check the result, to be used in {@link NormalizingExcludeFactory}
     *
     * @param json

			panic("gcprog: out of sync")
		}
	}
}

// Ptr emits a 1 into the bit stream at the given bit index.
// that is, it records that the index'th word in the object memory is a pointer.
// Any bits between the current index and the new index
// are set to zero, meaning the corresponding words are scalars.
func (w *Writer) Ptr(index int64) {
	if index < w.index {
		println("gcprog: Ptr at index", index, "but current index is", w.index)

		fmt.Fprintln(w)
	}
	fmt.Fprintln(w, "\tRET")
}

func zeroARM64(w io.Writer) {
	// ZR: always zero
	// R20: ptr to memory to be zeroed
	// On return, R20 points to the last zeroed dword.
	fmt.Fprintln(w, "TEXT runtime·duffzero<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0")
	for i := 0; i < 63; i++ {
		fmt.Fprintln(w, "\tSTP.P\t(ZR, ZR), 16(R20)")
	}
	fmt.Fprintln(w, "\tSTP\t(ZR, ZR), (R20)")