Fix issue 2295.

Closes #2295. When creating shadow variables, copy the lvDontPromote flag
from the shadowed variable.

diff --git a/src/jit/gschecks.cpp b/src/jit/gschecks.cpp
index 9f85b55..915273f 100644 (file)
--- a/src/jit/gschecks.cpp
+++ b/src/jit/gschecks.cpp
@@ -474,6 +474,9 @@ void Compiler::gsParamsToShadows()
             dst = gtNewOperNode(GT_ADDR, TYP_BYREF, dst);
 
             opAssign = gtNewCpObjNode(dst, src, clsHnd, false);
+#if FEATURE_MULTIREG_STRUCTS
+            lvaTable[shadowVar].lvDontPromote = lvaTable[lclNum].lvDontPromote;
+#endif // FEATURE_MULTIREG_STRUCTS
         }
         else
         {