-const char *getCPUAttr(unsigned ArchKind);
-const char *getSubArch(unsigned ArchKind);
-const char *getArchExtName(unsigned ArchExtKind);
-const char *getHWDivName(unsigned HWDivKind);
-const char *getDefaultCPU(StringRef Arch);
+StringRef getCPUAttr(unsigned ArchKind);
+StringRef getSubArch(unsigned ArchKind);
+StringRef getArchExtName(unsigned ArchExtKind);
+StringRef getHWDivName(unsigned HWDivKind);
+StringRef getDefaultCPU(StringRef Arch);