From 53ab564ecfc93984ded8cce26d210af9f828a49c Mon Sep 17 00:00:00 2001
From: Roman Lebedev <lebedev.ri@gmail.com>
Date: Thu, 5 Jan 2023 21:20:32 +0300
Subject: [PATCH] [NFC][YAMLTraits] Use `SmallString<>`+SSO when yamlizing
 non-strings

This gets rid of basically all temporary allocations
during YAML serialization of llvm-exegesis snippets,
we go from ~1.8M temporary allocations to 13k.
---
 llvm/include/llvm/Support/YAMLTraits.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/include/llvm/Support/YAMLTraits.h b/llvm/include/llvm/Support/YAMLTraits.h
index e46442d..ef74f38 100644
--- a/llvm/include/llvm/Support/YAMLTraits.h
+++ b/llvm/include/llvm/Support/YAMLTraits.h
@@ -1000,8 +1000,8 @@ template <typename T>
 std::enable_if_t<has_ScalarTraits<T>::value, void> yamlize(IO &io, T &Val, bool,
                                                            EmptyContext &Ctx) {
   if ( io.outputting() ) {
-    std::string Storage;
-    raw_string_ostream Buffer(Storage);
+    SmallString<128> Storage;
+    raw_svector_ostream Buffer(Storage);
     ScalarTraits<T>::output(Val, io.getContext(), Buffer);
     StringRef Str = Buffer.str();
     io.scalarString(Str, ScalarTraits<T>::mustQuote(Str));
-- 
2.7.4