[SystemZ]  Handle BRCTH branches correctly in SystemZLongBranch.cpp.

BRCTH is capable of a long branch which needs to be recognized during branch
relaxation. This is done by checking for ExtraRelaxSize == 0.

Review: Ulrich Weigand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322688 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed