From 8e36a5c960e07555d80fb98d71c692c20f3ea6c4 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Mon, 29 Mar 2010 21:27:30 +0000 Subject: Fix PR4975. Avoid referencing empty vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99840 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp') diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index faefe2932e..7a0daf69c8 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -6051,8 +6051,10 @@ void SelectionDAGISel::LowerArguments(BasicBlock *LLVMBB) { } if (!I->use_empty()) { - SDValue Res = DAG.getMergeValues(&ArgValues[0], NumValues, - SDB->getCurDebugLoc()); + SDValue Res; + if (!ArgValues.empty()) + Res = DAG.getMergeValues(&ArgValues[0], NumValues, + SDB->getCurDebugLoc()); SDB->setValue(I, Res); // If this argument is live outside of the entry block, insert a copy from -- cgit v1.2.3-18-g5258