Make clever use of padding to shrink IntegerLiterals.

Inheritance allows us to use padding across classes.
40 -> 32 bytes on x86_64.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151499 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed