Extend the builder interface to use the new instruction positioning code.

This adds support for instruction iterators, as well as rewriting the
builder code to use these new functions. This lets us eliminate the C
bindings for moving around the builder.

Patch by Erick Tryzelaar!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48774 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed