bwburnsides

Exception in thread "main" java.nio.BufferOverflowException at java.nio.DirectByteBuffer.put(Unknown Source) at org.iq80.leveldb.util.Zlib$ByteBufferBackedOutputStream.write(Zlib.java:91) at org.iq80.leveldb.util.Zlib$ZLibSPI.copy(Zlib.java:108) at org.iq80.leveldb.util.Zlib$ZLibSPI.uncompress(Zlib.java:118) at org.iq80.leveldb.util.Zlib.uncompress(Zlib.java:181) at org.iq80.leveldb.table.MMapTable.readBlock(MMapTable.java:121) at org.iq80.leveldb.table.Table.openBlock(Table.java:79) at org.iq80.leveldb.util.TableIterator.getNextBlock(TableIterator.java:102) at org.iq80.leveldb.util.TableIterator.getNextElement(TableIterator.java:79) at org.iq80.leveldb.util.AbstractSeekingIterator.hasNext(AbstractSeekingIterator.java:48) at org.iq80.leveldb.util.InternalTableIterator.getNextElement(InternalTableIterator.java:51) at org.iq80.leveldb.util.AbstractSeekingIterator.hasNext(AbstractSeekingIterator.java:48)...

Replace scratch register with XOR swap

2

I'm getting up to snuff on compiler backend details for a personal project and the `regalloc2` overview and the [follow on article](https://cfallin.org/blog/2022/06/09/cranelift-regalloc2/) have been great. I'm not going to pretend...