Optimize field space usage in CompoundStmt, LabelStmt, Expr, and CastExpr.
There's probably still significant padding waste on x86-64 UNIXen, but
the difference in 32-bit compiles should be significant.

There are a lot of Expr nodes left that could lose a word this way.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117359 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed