From: Anton Afanasyev <anton.a.afanasyev@gmail.com>
Date: Tue, 16 Apr 2019 19:43:18 +0000 (+0000)
Subject: [Support][JSON] Add reserve() to json Array
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=981f0db5c18ed1adce25c05429431df8df5e7adc;p=llvm

[Support][JSON] Add reserve() to json Array

Summary:
Space reservation increases json lib performance for the arrays with large number of entries.
Here is the example and discussion: https://reviews.llvm.org/D60609#1468941

Reviewers: lebedev.ri, sammccall

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60788

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358520 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Support/JSON.h b/include/llvm/Support/JSON.h
index e3cb9506632..b2aaf68724d 100644
--- a/include/llvm/Support/JSON.h
+++ b/include/llvm/Support/JSON.h
@@ -179,6 +179,7 @@ public:
 
   bool empty() const { return V.empty(); }
   size_t size() const { return V.size(); }
+  void reserve(size_t S) { V.reserve(S); }
 
   void clear() { V.clear(); }
   void push_back(const Value &E) { V.push_back(E); }