castDecomp.patch

diff --git a/src/jit/decomposelongs.cpp b/src/jit/decomposelongs.cpp
index 15198e3..35dea9d 100644
--- a/src/jit/decomposelongs.cpp
+++ b/src/jit/decomposelongs.cpp
@@ -409,7 +409,7 @@ GenTree* DecomposeLongs::DecomposeStoreLclVar(LIR::Use& use)
     // itself should not have any. The lo and hi rhs parts could, at least
     // in theory, have different side effects so we can't simply copy the
     // original store's side effecs to both parts.
-    unsigned flags   = tree->gtFlags & ~GTF_ALL_EFFECT;
+    unsigned flags   = (tree->gtFlags & ~GTF_ALL_EFFECT) | GTF_ASG;
     unsigned loFlags = flags | (loRhs->gtFlags & GTF_ALL_EFFECT);
     unsigned hiFlags = flags | (hiRhs->gtFlags & GTF_ALL_EFFECT);

@@ -525,6 +525,7 @@ GenTree* DecomposeLongs::DecomposeCast(LIR::Use& use)
         {
             loResult = cast->gtGetOp1();
             hiResult = m_compiler->gtNewZeroConNode(TYP_INT);
+            m_compiler->gtPrepareCost(hiResult);

             BlockRange().Remove(cast);
             BlockRange().InsertAfter(loResult, hiResult);
@@ -544,6 +545,7 @@ GenTree* DecomposeLongs::DecomposeCast(LIR::Use& use)
                 loResult->gtType               = TYP_INT;

                 hiResult = m_compiler->gtNewZeroConNode(TYP_INT);
+                m_compiler->gtPrepareCost(hiResult);

                 BlockRange().InsertAfter(loResult, hiResult);
             }
@@ -559,7 +561,7 @@ GenTree* DecomposeLongs::DecomposeCast(LIR::Use& use)
                 hiResult         = m_compiler->gtNewOperNode(GT_RSH, TYP_INT, loCopy, shiftBy);

                 BlockRange().Remove(cast);
-                BlockRange().InsertAfter(loResult, loCopy, shiftBy, hiResult);
+                BlockRange().InsertAfter(loResult, LIR::SeqTree(m_compiler, hiResult));
                 m_compiler->lvaIncRefCnts(loCopy);
             }
         }