From: Aditya Nandakumar <aditya_nandakumar@apple.com>
Date: Fri, 8 Feb 2019 03:32:46 +0000 (+0000)
Subject: [GISel]: While constructing the GISelWorklist make sure we reserve at least the requi... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c8b5bafa375ae393776d9fc3f874afd6851b83e1;p=llvm

[GISel]: While constructing the GISelWorklist make sure we reserve at least the required size to the underlying dense map.

https://reviews.llvm.org/D57931

This should save some unnecessary growing of the DenseMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353498 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/CodeGen/GlobalISel/GISelWorkList.h b/include/llvm/CodeGen/GlobalISel/GISelWorkList.h
index 227b0a2486e..626a66620fa 100644
--- a/include/llvm/CodeGen/GlobalISel/GISelWorkList.h
+++ b/include/llvm/CodeGen/GlobalISel/GISelWorkList.h
@@ -33,7 +33,7 @@ class GISelWorkList {
   DenseMap<MachineInstr *, unsigned> WorklistMap;
 
 public:
-  GISelWorkList() {}
+  GISelWorkList() : WorklistMap(N) {}
 
   bool empty() const { return WorklistMap.empty(); }