Remove isReg, isImm, and isMBB, and change all their users to use 
isRegister, isImmediate, and isMachineBasicBlock, which are equivalent,
and more popular.

llvm-svn: 41958
diff --git a/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp b/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp
index 4286f01..5220c64 100644
--- a/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp
+++ b/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp
@@ -129,7 +129,7 @@
       unsigned MBBStartOffset = 0;
       for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
            I != E; ++I) {
-        if (I->getOpcode() != PPC::BCC || I->getOperand(2).isImm()) {
+        if (I->getOpcode() != PPC::BCC || I->getOperand(2).isImmediate()) {
           MBBStartOffset += getNumBytesForInstruction(I);
           continue;
         }