Upgrade some instances of std::sort to llvm::sort. NFC.
diff --git a/clang/utils/TableGen/SveEmitter.cpp b/clang/utils/TableGen/SveEmitter.cpp
index e02e94d..a792530 100644
--- a/clang/utils/TableGen/SveEmitter.cpp
+++ b/clang/utils/TableGen/SveEmitter.cpp
@@ -604,7 +604,7 @@
   }
 
   // Remove duplicate type specs.
-  std::sort(TypeSpecs.begin(), TypeSpecs.end());
+  llvm::sort(TypeSpecs);
   TypeSpecs.erase(std::unique(TypeSpecs.begin(), TypeSpecs.end()),
                   TypeSpecs.end());