Fix typos (30 of 30)

include/swift/SIL/SILCloner.h

@@ -366,7 +366,7 @@ SILCloner<ImplClass>::visitSILBasicBlock(SILBasicBlock* BB) {
   // Iterate over successors to do the depth-first search.
   for (auto &Succ : BB->getSuccessors()) {
     auto BBI = BBMap.find(Succ);
-    // Only visit a successor that has not already been visisted.
+    // Only visit a successor that has not already been visited.
     if (BBI == BBMap.end()) {
       // Map the successor to a new BB.
       auto MappedBB = new (F.getModule()) SILBasicBlock(&F);

include/swift/SIL/SILFunction.h

@@ -108,7 +108,7 @@ class SILFunction
   /// functions into the thunk.
   unsigned Thunk : 2;
 
-  /// The visiblity of the parent class, if this is a method which is contained
+  /// The visibility of the parent class, if this is a method which is contained
   /// in the vtable of that class.
   unsigned ClassVisibility : 2;
 
@@ -300,7 +300,7 @@ class SILFunction
 
   /// Get's the effective linkage which is used to derive the llvm linkage.
   /// Usually this is the same as getLinkage(), except in one case: if this
-  /// function is a method in a class which has higher visiblity than the
+  /// function is a method in a class which has higher visibility than the
   /// method itself, the function can be referenced from vtables of derived
   /// classes in other compilation units.
   SILLinkage getEffectiveSymbolLinkage() const {

lib/SILGen/LValue.h

@@ -53,7 +53,7 @@ struct LValueTypeData {
   /// On physical path components, projection yields an address of
   /// this type.  On logical path components, materialize yields an
   /// address of this type, set expects a value of this type, and
-  /// get yields a vlaue of this type.
+  /// get yields a value of this type.
   SILType TypeOfRValue;
 
   LValueTypeData() = default;

lib/SILOptimizer/IPO/DeadFunctionElimination.cpp

@@ -197,7 +197,7 @@ class FunctionLivenessComputation {
     }
   }
 
-  /// Retrieve the visiblity information from the AST.
+  /// Retrieve the visibility information from the AST.
   bool isVisibleExternally(ValueDecl *decl) {
     Accessibility accessibility = decl->getEffectiveAccess();
     SILLinkage linkage;

lib/Sema/CSApply.cpp

@@ -4098,7 +4098,7 @@ Expr *ExprRewriter::coerceCallArguments(Expr *arg, Type paramType,
   };
 
   // Local function to extract the ith argument label, which papers over some
-  // of the weirdndess with tuples vs. parentheses.
+  // of the weirdness with tuples vs. parentheses.
   auto getArgLabel = [&](unsigned i) -> Identifier {
     if (argTuple)
       return argTuple->getElementName(i);

test/SILOptimizer/performance_inliner.sil

@@ -599,7 +599,7 @@ entry:
 }
 
 // Visiblity Tests
-// These tests stem from a time where visiblity had an influence
+// These tests stem from a time where visibility had an influence
 // on the inlining. This is no longer the case so we just check
 // if everything can be inlined, regardless of visibility.