- Based on feedback from callgrind and perf add hint about most likely branch in frequently called code.

- Inline small frequent methods.

1 files changed, 1 insertions, 1 deletions

diff --git a/vespalib/src/vespa/vespalib/util/compress.h b/vespalib/src/vespa/vespalib/util/compress.h
index f4190c999c3..2bab2083b34 100644
--- a/vespalib/src/vespa/vespalib/util/compress.h
+++ b/vespalib/src/vespa/vespalib/util/compress.h
@@ -42,7 +42,7 @@ public:
         const uint8_t * src = static_cast<const uint8_t *>(srcv);
         const uint8_t c = src[0];
         size_t numbytes;
-        if (c & 0x40) {
+        if (__builtin_expect(c & 0x40, false)) {
            if (c & 0x20) {
                n = ((c & 0x1f) << 24) + (src[1] << 16) + (src[2] << 8) + src[3];
                numbytes = 4;