Fix typos in comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48297 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index 63d5b87..6f82cfb 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -58,7 +58,7 @@
     /// at.
     IndexedMap<int, VirtReg2IndexFunctor> Virt2StackSlotMap;
 
-    /// Virt2StackSlotMap - This is virtual register to rematerialization id
+    /// Virt2ReMatIdMap - This is virtual register to rematerialization id
     /// mapping. Each spilled virtual register that should be remat'd has an
     /// entry in it which corresponds to the remat id.
     IndexedMap<int, VirtReg2IndexFunctor> Virt2ReMatIdMap;
@@ -173,7 +173,7 @@
       return Virt2SplitMap[virtReg];
     }
 
-    /// @brief returns true is the specified virtual register is not
+    /// @brief returns true if the specified virtual register is not
     /// mapped to a stack slot or rematerialized.
     bool isAssignedReg(unsigned virtReg) const {
       if (getStackSlot(virtReg) == NO_STACK_SLOT &&