llvm::StringRef compare_lower -> compare_insensitive

The `compare_lower` API was replaced with `compare_insensitive` in llvm
commit 2e4a2b8.

git clang-format ran.

Author: etcwilde

lib/AST/ASTContext.cpp

@@ -2028,7 +2028,7 @@ void ASTContext::getVisibleTopLevelModuleNames(
 
   // Sort and unique.
   std::sort(names.begin(), names.end(), [](Identifier LHS, Identifier RHS) {
-    return LHS.str().compare_lower(RHS.str()) < 0;
+    return LHS.str().compare_insensitive(RHS.str()) < 0;
   });
   names.erase(std::unique(names.begin(), names.end()), names.end());
 }

lib/IDE/CodeCompletion.cpp

@@ -1502,13 +1502,13 @@ void CodeCompletionContext::sortCompletionResults(
   // Sort nameCache, and then transform Results to return the pointers in order.
   std::sort(nameCache.begin(), nameCache.end(),
             [](const ResultAndName &LHS, const ResultAndName &RHS) {
-    int Result = StringRef(LHS.name).compare_lower(RHS.name);
-    // If the case insensitive comparison is equal, then secondary sort order
-    // should be case sensitive.
-    if (Result == 0)
-      Result = LHS.name.compare(RHS.name);
-    return Result < 0;
-  });
+              int Result = StringRef(LHS.name).compare_insensitive(RHS.name);
+              // If the case insensitive comparison is equal, then secondary
+              // sort order should be case sensitive.
+              if (Result == 0)
+                Result = LHS.name.compare(RHS.name);
+              return Result < 0;
+            });
 
   llvm::transform(nameCache, Results.begin(),
                   [](const ResultAndName &entry) { return entry.result; });

lib/IDE/ModuleInterfacePrinting.cpp

@@ -207,8 +207,9 @@ void swift::ide::collectModuleGroups(ModuleDecl *M,
   for (auto File : M->getFiles()) {
     File->collectAllGroups(Into);
   }
-  std::sort(Into.begin(), Into.end(),
-            [](StringRef L, StringRef R) { return L.compare_lower(R) < 0; });
+  std::sort(Into.begin(), Into.end(), [](StringRef L, StringRef R) {
+    return L.compare_insensitive(R) < 0;
+  });
 }
 
 /// Determine whether the given extension has a Clang node that

lib/Markup/AST.cpp

@@ -341,9 +341,9 @@ swift::markup::MarkupASTNode *swift::markup::createSimpleField(
   if (false) {
 
   }
-#define MARKUP_SIMPLE_FIELD(Id, Keyword, XMLKind) \
-  else if (Tag.compare_lower(#Keyword) == 0) { \
-    return Id::create(MC, Children); \
+#define MARKUP_SIMPLE_FIELD(Id, Keyword, XMLKind)                              \
+  else if (Tag.compare_insensitive(#Keyword) == 0) {                           \
+    return Id::create(MC, Children);                                           \
   }
 #include "swift/Markup/SimpleFields.def"
   llvm_unreachable("Given tag not for any simple markup field");
@@ -353,9 +353,9 @@ bool swift::markup::isAFieldTag(StringRef Tag) {
   if (false) {
 
   }
-#define MARKUP_SIMPLE_FIELD(Id, Keyword, XMLKind) \
-  else if (Tag.compare_lower(#Keyword) == 0) { \
-    return true; \
+#define MARKUP_SIMPLE_FIELD(Id, Keyword, XMLKind)                              \
+  else if (Tag.compare_insensitive(#Keyword) == 0) {                           \
+    return true;                                                               \
   }
 #include "swift/Markup/SimpleFields.def"
   return false;

tools/SourceKit/lib/SwiftLang/CodeCompletionOrganizer.cpp

@@ -624,7 +624,7 @@ static double combinedScore(const Options &options, double matchScore,
 
 static int compareResultName(Item &a, Item &b) {
   // Sort first by filter name (case-insensitive).
-  if (int primary = StringRef(a.name).compare_lower(b.name))
+  if (int primary = StringRef(a.name).compare_insensitive(b.name))
     return primary;
 
   // Next, sort by full description text.

tools/driver/swift_api_digester_main.cpp

@@ -196,13 +196,15 @@ class RemovedAddedNodeMatcher : public NodeMatcher, public MatchedNodeListener {
   bool detectFuncToProperty(SDKNode *R, SDKNode *A) {
     if (R->getKind() == SDKNodeKind::DeclFunction) {
       if (A->getKind() == SDKNodeKind::DeclVar) {
-        if (A->getName().compare_lower(R->getName()) == 0) {
+        if (A->getName().compare_insensitive(R->getName()) == 0) {
           R->annotate(NodeAnnotation::GetterToProperty);
         } else if (R->getName().startswith("get") &&
-                   R->getName().substr(3).compare_lower(A->getName()) == 0) {
+                   R->getName().substr(3).compare_insensitive(A->getName()) ==
+                       0) {
           R->annotate(NodeAnnotation::GetterToProperty);
         } else if (R->getName().startswith("set") &&
-                   R->getName().substr(3).compare_lower(A->getName()) == 0) {
+                   R->getName().substr(3).compare_insensitive(A->getName()) ==
+                       0) {
           R->annotate(NodeAnnotation::SetterToProperty);
         } else {
           return false;