From 97c383bc368b780c1f684438c6538eb836133725 Mon Sep 17 00:00:00 2001
From: Gerolf Hoflehner <ghoflehner@apple.com>
Date: Thu, 7 Aug 2014 21:40:58 +0000
Subject: MachineCombiner Pass for selecting faster instruction sequence on
 AArch64

Re-commit of r214832,r21469 with a work-around that
avoids the previous problem with gcc build compilers

The work-around is to use SmallVector instead of ArrayRef
of basic blocks in preservesResourceLen()/MachineCombiner.cpp

llvm-svn: 215151
---
 llvm/lib/CodeGen/MachineCombiner.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/CodeGen')

diff --git a/llvm/lib/CodeGen/MachineCombiner.cpp b/llvm/lib/CodeGen/MachineCombiner.cpp
index 7cf3506c0a5..032b4ee5cbb 100644
--- a/llvm/lib/CodeGen/MachineCombiner.cpp
+++ b/llvm/lib/CodeGen/MachineCombiner.cpp
@@ -273,7 +273,9 @@ bool MachineCombiner::preservesResourceLen(
 
   // Compute current resource length
 
-  ArrayRef<const MachineBasicBlock *> MBBarr(MBB);
+  //ArrayRef<const MachineBasicBlock *> MBBarr(MBB);
+  SmallVector <const MachineBasicBlock *, 1> MBBarr;
+  MBBarr.push_back(MBB);
   unsigned ResLenBeforeCombine = BlockTrace.getResourceLength(MBBarr);
 
   // Deal with SC rather than Instructions.
-- 
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