Fix some comment typos.

[oota-llvm.git] / lib / CodeGen / RegisterCoalescer.cpp

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index c911b9b47ea2c9c7a2998a3691e8646b6cbd7675..292e836c495a9e656f49f2cf10c49a65a6cc2504 100644 (file)
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -1822,7 +1822,7 @@ public:
 
   /// Removes subranges starting at copies that get removed. This sometimes
   /// happens when undefined subranges are copied around. These ranges contain
-  /// no usefull information and can be removed.
+  /// no useful information and can be removed.
   void pruneSubRegValues(LiveInterval &LI, unsigned &ShrinkMask);
 
   /// Erase any machine instructions that have been coalesced away.
@@ -2410,7 +2410,7 @@ void JoinVals::pruneSubRegValues(LiveInterval &LI, unsigned &ShrinkMask)
         continue;
       }
       // If a subrange ends at the copy, then a value was copied but only
-      // partially used later. Shrink the subregister range apropriately.
+      // partially used later. Shrink the subregister range appropriately.
       if (Q.valueIn() != nullptr && Q.valueOut() == nullptr) {
         DEBUG(dbgs() << "\t\tDead uses at sublane "
                      << format("%04X", S.LaneMask) << " at " << Def << "\n");
@@ -2799,7 +2799,7 @@ bool RegisterCoalescer::applyTerminalRule(const MachineInstr &Copy) const {
       !isTerminalReg(DstReg, Copy, MRI))
     return false;
 
-  // DstReg is a terminal node. Check if it inteferes with any other
+  // DstReg is a terminal node. Check if it interferes with any other
   // copy involving SrcReg.
   const MachineBasicBlock *OrigBB = Copy.getParent();
   const LiveInterval &DstLI = LIS->getInterval(DstReg);