[llvm] r353498 - [GISel]: While constructing the GISelWorklist make sure we reserve at least the required size to the underlying dense map.

[Aditya Nandakumar via llvm-commits]

Author: aditya_nandakumar
Date: Thu Feb  7 19:32:46 2019
New Revision: 353498

URL: http://llvm.org/viewvc/llvm-project?rev=353498&view=rev
Log:
[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.

Modified:
    llvm/trunk/include/llvm/CodeGen/GlobalISel/GISelWorkList.h

Modified: llvm/trunk/include/llvm/CodeGen/GlobalISel/GISelWorkList.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/GlobalISel/GISelWorkList.h?rev=353498&r1=353497&r2=353498&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/GlobalISel/GISelWorkList.h (original)
+++ llvm/trunk/include/llvm/CodeGen/GlobalISel/GISelWorkList.h Thu Feb  7 19:32:46 2019
@@ -33,7 +33,7 @@ class GISelWorkList {
   DenseMap<MachineInstr *, unsigned> WorklistMap;
 
 public:
-  GISelWorkList() {}
+  GISelWorkList() : WorklistMap(N) {}
 
   bool empty() const { return WorklistMap.empty(); }