diff --git a/lib/Target/PowerPC/PPCBranchSelector.cpp b/lib/Target/PowerPC/PPCBranchSelector.cpp
index 78932a9a766..08c39311fed 100644
--- a/lib/Target/PowerPC/PPCBranchSelector.cpp
+++ b/lib/Target/PowerPC/PPCBranchSelector.cpp
@@ -133,6 +133,7 @@ bool PPCBSel::runOnMachineFunction(MachineFunction &Fn) {
         if (Displacement >= -32768 && Displacement <= 32767) {
           BuildMI(*MBB, MBBJ, Opcode, 2).addReg(CRReg).addMBB(trueMBB);
         } else {
+          // Long branch, skip next branch instruction (i.e. $PC+8).
           BuildMI(*MBB, MBBJ, Inverted, 2).addReg(CRReg).addImm(2);
           BuildMI(*MBB, MBBJ, PPC::B, 1).addMBB(trueMBB);
         }