Jordan Rose 6ac4ba23fd Micro-optimization: don't shift an entire bitcode record over to get the code.
Previously, BitstreamCursor read an abbreviated record by splatting the
whole thing into a data vector, then extracting and removing the /first/
element. Now, it reads the first element--the record code--separately from
the actual field values.

No (intended) functionality change.

llvm-svn: 181639
2013-05-10 22:17:10 +00:00
..