From c784d321d90a3609caeacfb525b7ccadd41a5195 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu@google.com>
Date: Tue, 12 Nov 2024 10:09:28 -0800
Subject: [ThinLTO] Use heterogenous lookups with std::map (NFC) (#115812)

Heterogenous lookups allow us to call find with StringRef, avoiding a
temporary heap allocation of std::string.
---
 llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 3e82aa7..91b1917 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -7959,7 +7959,8 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
       break;
 
     case bitc::FS_CFI_FUNCTION_DEFS: {
-      std::set<std::string> &CfiFunctionDefs = TheIndex.cfiFunctionDefs();
+      std::set<std::string, std::less<>> &CfiFunctionDefs =
+          TheIndex.cfiFunctionDefs();
       for (unsigned I = 0; I != Record.size(); I += 2)
         CfiFunctionDefs.insert(
             {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])});
@@ -7967,7 +7968,8 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
     }
 
     case bitc::FS_CFI_FUNCTION_DECLS: {
-      std::set<std::string> &CfiFunctionDecls = TheIndex.cfiFunctionDecls();
+      std::set<std::string, std::less<>> &CfiFunctionDecls =
+          TheIndex.cfiFunctionDecls();
       for (unsigned I = 0; I != Record.size(); I += 2)
         CfiFunctionDecls.insert(
             {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])});
-- 
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