Handle Values with no value in getCopyFromRegs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109415 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 723e0f0a91483e3c873efd8b6ea53a73342dbbd5..1c8f22a2a2519577aeae71d8087fda7986b11cc9 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -530,6 +530,10 @@ SDValue RegsForValue::getCopyFromRegs(SelectionDAG &DAG,
                                       FunctionLoweringInfo &FuncInfo,
                                       DebugLoc dl,
                                       SDValue &Chain, SDValue *Flag) const {
+  // A Value with type {} or [0 x %t] needs no registers.
+  if (ValueVTs.empty())
+    return SDValue();
+
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
 
   // Assemble the legal parts into the final values.