[PowerPC] fix trivial typos in comment, NFC

llvm-svn: 334583
diff --git a/llvm/lib/Target/PowerPC/PPCReduceCRLogicals.cpp b/llvm/lib/Target/PowerPC/PPCReduceCRLogicals.cpp
index d6d948e..9c2350f 100644
--- a/llvm/lib/Target/PowerPC/PPCReduceCRLogicals.cpp
+++ b/llvm/lib/Target/PowerPC/PPCReduceCRLogicals.cpp
@@ -91,7 +91,7 @@
                                     MachineBasicBlock *NewMBB,
                                     MachineRegisterInfo *MRI) {
   assert(OrigMBB->isSuccessor(NewMBB) &&
-         "NewMBB must be a sucessor of OrigMBB");
+         "NewMBB must be a successor of OrigMBB");
   for (auto &MI : Successor->instrs()) {
     if (!MI.isPHI())
       continue;
@@ -501,7 +501,7 @@
   return Ret;
 }
 
-/// Looks trhough a COPY instruction to the actual definition of the CR-bit
+/// Looks through a COPY instruction to the actual definition of the CR-bit
 /// register and returns the instruction that defines it.
 /// FIXME: This currently handles what is by-far the most common case:
 /// an instruction that defines a CR field followed by a single copy of a bit
@@ -699,7 +699,7 @@
   }
 }
 
-} // end annonymous namespace
+} // end anonymous namespace
 
 INITIALIZE_PASS_BEGIN(PPCReduceCRLogicals, DEBUG_TYPE,
                       "PowerPC Reduce CR logical Operation", false, false)