move GetPointerBaseWithConstantOffset out of GVN into ValueTracking.h

llvm-svn: 120476
3 files changed
tree: fb337cf64332ffa1be89e243cda962fd8838d129
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. lldb/
  6. llvm/