From: Cameron Zwarich <zwarich@apple.com>
Date: Thu, 17 Feb 2011 06:52:07 +0000 (+0000)
Subject: Switch to SmallVector in SimpleRegisterCoalescing for a 3.5% speedup on 403.gcc.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2598b1f4ac3d8242bb3821414f86e388b24c6046;p=oota-llvm.git

Switch to SmallVector in SimpleRegisterCoalescing for a 3.5% speedup on 403.gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125728 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index b56dd81a3c8..2843c1a5b6d 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -1425,9 +1425,9 @@ void SimpleRegisterCoalescing::CopyCoalesceInMBB(MachineBasicBlock *MBB,
                                                std::vector<CopyRec> &TryAgain) {
   DEBUG(dbgs() << MBB->getName() << ":\n");
 
-  std::vector<CopyRec> VirtCopies;
-  std::vector<CopyRec> PhysCopies;
-  std::vector<CopyRec> ImpDefCopies;
+  SmallVector<CopyRec, 8> VirtCopies;
+  SmallVector<CopyRec, 8> PhysCopies;
+  SmallVector<CopyRec, 8> ImpDefCopies;
   for (MachineBasicBlock::iterator MII = MBB->begin(), E = MBB->end();
        MII != E;) {
     MachineInstr *Inst = MII++;