[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
llvm-svn: 322688

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Target/SystemZ/SystemZLongBranch.cpp b/llvm/lib/Target/SystemZ/SystemZLongBranch.cpp
index 791f0334e0f..ef8b9806f89 100644
--- a/llvm/lib/Target/SystemZ/SystemZLongBranch.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZLongBranch.cpp
@@ -312,7 +312,7 @@ uint64_t SystemZLongBranch::initMBBInfo() {
 // relaxed if it were placed at address Address.
 bool SystemZLongBranch::mustRelaxBranch(const TerminatorInfo &Terminator,
                                         uint64_t Address) {
-  if (!Terminator.Branch)
+  if (!Terminator.Branch || Terminator.ExtraRelaxSize == 0)
     return false;
 
   const MBBInfo &Target = MBBs[Terminator.TargetBlock];