From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 11 Apr 2015 18:00:28 +0000 (+0000)
Subject: Make OnDiskChainedHashTableGenerator's Bucket type a POD type and reorder fields... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=38ebdeea7a53f0468b6973a79ed88a9397b7b769;p=llvm

Make OnDiskChainedHashTableGenerator's Bucket type a POD type and reorder fields to optimize padding

For the common case of offset_type=unsigned this brings Bucket from 24 to 16
bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234692 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Support/OnDiskHashTable.h b/include/llvm/Support/OnDiskHashTable.h
index 52f133ccff6..0f097f28728 100644
--- a/include/llvm/Support/OnDiskHashTable.h
+++ b/include/llvm/Support/OnDiskHashTable.h
@@ -75,13 +75,10 @@ template <typename Info> class OnDiskChainedHashTableGenerator {
   llvm::SpecificBumpPtrAllocator<Item> BA;
 
   /// \brief A linked list of values in a particular hash bucket.
-  class Bucket {
-  public:
+  struct Bucket {
     offset_type Off;
-    Item *Head;
     unsigned Length;
-
-    Bucket() {}
+    Item *Head;
   };
 
   Bucket *Buckets;