From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Sun, 21 Oct 2012 19:05:03 +0000 (+0000)
Subject: Don't crash when the Assignments vector is empty.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=56acf63e35440068935bca999d19a81f76e876d6;p=oota-llvm.git

Don't crash when the Assignments vector is empty.

Reported by Vincent Lejeune using an out-of-tree target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166398 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index ba6b4569a8f..2ca67d63257 100644
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -1302,7 +1302,7 @@ public:
                    SmallVectorImpl<unsigned> &ShrinkRegs);
 
   /// Get the value assignments suitable for passing to LiveInterval::join.
-  const int *getAssignments() const { return &Assignments[0]; }
+  const int *getAssignments() const { return Assignments.data(); }
 };
 } // end anonymous namespace