This makes catchret look more like a branch, and less like a weird use of BlockAddress. It also lets us get away from llvm.x86.seh.restoreframe, which relies on the old parentfpoffset label arithmetic. llvm-svn: 247936
WinEHPrepare's new coloring algorithm really expects to see cleanupendpads now, so Clang will start emitting them soon. llvm-svn: 247341