2 files changed, 12 insertions, 12 deletions

diff --git a/llvm/include/llvm/ADT/Triple.h b/llvm/include/llvm/ADT/Triple.h
index 6173cd2bd91..2e02045f157 100644
--- a/llvm/include/llvm/ADT/Triple.h
+++ b/llvm/include/llvm/ADT/Triple.h
@@ -691,7 +691,7 @@ public:
   /// @{
 
   /// getArchTypeName - Get the canonical name for the \p Kind architecture.
-  static const char *getArchTypeName(ArchType Kind);
+  static StringRef getArchTypeName(ArchType Kind);
 
   /// getArchTypePrefix - Get the "prefix" canonical name for the \p Kind
   /// architecture. This is the prefix used by the architecture specific
@@ -699,17 +699,17 @@ public:
   /// Intrinsic::getIntrinsicForGCCBuiltin().
   ///
   /// \return - The architecture prefix, or 0 if none is defined.
-  static const char *getArchTypePrefix(ArchType Kind);
+  static StringRef getArchTypePrefix(ArchType Kind);
 
   /// getVendorTypeName - Get the canonical name for the \p Kind vendor.
-  static const char *getVendorTypeName(VendorType Kind);
+  static StringRef getVendorTypeName(VendorType Kind);
 
   /// getOSTypeName - Get the canonical name for the \p Kind operating system.
-  static const char *getOSTypeName(OSType Kind);
+  static StringRef getOSTypeName(OSType Kind);
 
   /// getEnvironmentTypeName - Get the canonical name for the \p Kind
   /// environment.
-  static const char *getEnvironmentTypeName(EnvironmentType Kind);
+  static StringRef getEnvironmentTypeName(EnvironmentType Kind);
 
   /// @}
   /// @name Static helpers for converting alternate architecture names.
diff --git a/llvm/lib/Support/Triple.cpp b/llvm/lib/Support/Triple.cpp
index 179e9d2790f..bc12203d817 100644
--- a/llvm/lib/Support/Triple.cpp
+++ b/llvm/lib/Support/Triple.cpp
@@ -17,7 +17,7 @@
 #include <cstring>
 using namespace llvm;
 
-const char *Triple::getArchTypeName(ArchType Kind) {
+StringRef Triple::getArchTypeName(ArchType Kind) {
   switch (Kind) {
   case UnknownArch:    return "unknown";
 
@@ -71,10 +71,10 @@ const char *Triple::getArchTypeName(ArchType Kind) {
   llvm_unreachable("Invalid ArchType!");
 }
 
-const char *Triple::getArchTypePrefix(ArchType Kind) {
+StringRef Triple::getArchTypePrefix(ArchType Kind) {
   switch (Kind) {
   default:
-    return nullptr;
+    return StringRef();
 
   case aarch64:
   case aarch64_be:  return "aarch64";
@@ -137,7 +137,7 @@ const char *Triple::getArchTypePrefix(ArchType Kind) {
   }
 }
 
-const char *Triple::getVendorTypeName(VendorType Kind) {
+StringRef Triple::getVendorTypeName(VendorType Kind) {
   switch (Kind) {
   case UnknownVendor: return "unknown";
 
@@ -160,7 +160,7 @@ const char *Triple::getVendorTypeName(VendorType Kind) {
   llvm_unreachable("Invalid VendorType!");
 }
 
-const char *Triple::getOSTypeName(OSType Kind) {
+StringRef Triple::getOSTypeName(OSType Kind) {
   switch (Kind) {
   case UnknownOS: return "unknown";
 
@@ -197,7 +197,7 @@ const char *Triple::getOSTypeName(OSType Kind) {
   llvm_unreachable("Invalid OSType");
 }
 
-const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
+StringRef Triple::getEnvironmentTypeName(EnvironmentType Kind) {
   switch (Kind) {
   case UnknownEnvironment: return "unknown";
   case GNU: return "gnu";
@@ -557,7 +557,7 @@ static Triple::SubArchType parseSubArch(StringRef SubArchName) {
   }
 }
 
-static const char *getObjectFormatTypeName(Triple::ObjectFormatType Kind) {
+static StringRef getObjectFormatTypeName(Triple::ObjectFormatType Kind) {
   switch (Kind) {
   case Triple::UnknownObjectFormat: return "";
   case Triple::COFF: return "coff";