jpountz commented on a change in pull request #973: LUCENE-9027: Use SIMD
instructions to decode postings.
URL: https://github.com/apache/lucene-solr/pull/973#discussion_r345840144
##########
File path:
lucene/core/src/java/org/apache/lucene/store/ByteBufferIndexInput.java
##########
@@ -107,6 +122,24 @@ public final void readBytes(byte[] b, int offset, int
len) throws IOException {
}
}
+ @Override
+ public void readLongs(ByteOrder byteOrder, long[] dst, int offset, int
length) throws IOException {
+ try {
+ final int position = curBuf.position();
+ guard.getLongs(curLongBufferViews[position & 0x07].position(position >>>
3), dst, offset, length);
+ if (byteOrder != ByteOrder.nativeOrder()) {
+ for (int i = offset, end = offset + length; i < end; ++i) {
+ dst[i] = Long.reverseBytes(dst[i]);
+ }
+ }
+ curBuf.position(position + (length << 3));
+ } catch (BufferUnderflowException e) {
+ super.readLongs(byteOrder, dst, offset, length);
Review comment:
This is correct.
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