Fix typos in comments

llvm-svn: 215777
diff --git a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
index 0c37c45..5c40069 100644
--- a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
+++ b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
@@ -105,7 +105,7 @@
           ? Monotonic
           : LI->getOrdering();
 
-  // The only 64-bit load guaranteed to be single-copy atomic by the ARM ARM is
+  // The only 64-bit load guaranteed to be single-copy atomic by the ARM is
   // an ldrexd (A3.5.3).
   IRBuilder<> Builder(LI);
   Value *Val = TM->getSubtargetImpl()->getTargetLowering()->emitLoadLinked(
diff --git a/llvm/lib/Target/AArch64/AArch64AddressTypePromotion.cpp b/llvm/lib/Target/AArch64/AArch64AddressTypePromotion.cpp
index ab2c4b7..287989f 100644
--- a/llvm/lib/Target/AArch64/AArch64AddressTypePromotion.cpp
+++ b/llvm/lib/Target/AArch64/AArch64AddressTypePromotion.cpp
@@ -19,7 +19,7 @@
 // a = add nsw i64 f, 3
 // e = getelementptr ..., i64 a
 //
-// This is legal to do so if the computations are markers with either nsw or nuw
+// This is legal to do if the computations are marked with either nsw or nuw
 // markers.
 // Moreover, the current heuristic is simple: it does not create new sext
 // operations, i.e., it gives up when a sext would have forked (e.g., if
@@ -223,7 +223,7 @@
 }
 
 // Input:
-// - SExtInsts contains all the sext instructions that are use direclty in
+// - SExtInsts contains all the sext instructions that are used directly in
 //   GetElementPtrInst, i.e., access to memory.
 // Algorithm:
 // - For each sext operation in SExtInsts:
@@ -353,7 +353,7 @@
 
     // If the use is already of the right type, connect its uses to its argument
     // and delete it.
-    // This can happen for an Instruction which all uses are sign extended.
+    // This can happen for an Instruction all uses of which are sign extended.
     if (!ToRemove.count(SExt) &&
         SExt->getType() == SExt->getOperand(0)->getType()) {
       DEBUG(dbgs() << "Sign extension is useless, attach its use to "
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index fa38332..0bb304a 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -743,7 +743,7 @@
     // On v8, we have particularly efficient implementations of atomic fences
     // if they can be combined with nearby atomic loads and stores.
     if (!Subtarget->hasV8Ops()) {
-      // Automatically insert fences (dmb ist) around ATOMIC_SWAP etc.
+      // Automatically insert fences (dmb ish) around ATOMIC_SWAP etc.
       setInsertFencesForAtomic(true);
     }
   } else {
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 065d5d6..1263e8b 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -439,7 +439,7 @@
   // enableAtomicExpandLoadLinked - True if we need to expand our atomics.
   bool enableAtomicExpandLoadLinked() const override;
 
-  /// getInstrItins - Return the instruction itineraies based on subtarget
+  /// getInstrItins - Return the instruction itineraries based on subtarget
   /// selection.
   const InstrItineraryData *getInstrItineraryData() const {
     return &InstrItins;
diff --git a/llvm/lib/Target/Hexagon/HexagonSubtarget.h b/llvm/lib/Target/Hexagon/HexagonSubtarget.h
index 26ff23b..e7cbf1b 100644
--- a/llvm/lib/Target/Hexagon/HexagonSubtarget.h
+++ b/llvm/lib/Target/Hexagon/HexagonSubtarget.h
@@ -56,7 +56,7 @@
   HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
                    const TargetMachine &TM);
 
-  /// getInstrItins - Return the instruction itineraies based on subtarget
+  /// getInstrItins - Return the instruction itineraries based on subtarget
   /// selection.
   const InstrItineraryData *getInstrItineraryData() const {
     return &InstrItins;