add a minor missed dag combine that is blocking mid-level optimization
improvements, that will lead to fixing PR6627.

llvm-svn: 129504
1 file changed
tree: 736c55db4609330f2ddb8061269441ec14c18de4
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. lldb/
  6. llvm/