Debug info: Fix PR16736 and rdar://problem/14990587.
A DBG_VALUE is register-indirect iff the first operand is a register
_and_ the second operand is an immediate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190821 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index b4ac948f..b25e031 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -688,6 +688,7 @@
         .addFPImm(CF).addImm(DI->getOffset())
         .addMetadata(DI->getVariable());
     } else if (unsigned Reg = lookUpRegForValue(V)) {
+      // FIXME: This does not handle register-indirect values at offset 0.
       bool IsIndirect = DI->getOffset() != 0;
       BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, IsIndirect,
               Reg, DI->getOffset(), DI->getVariable());