From: Sergey Andreenko <seandree@microsoft.com>
Date: Mon, 11 Dec 2017 21:48:55 +0000 (-0800)
Subject: [RyuJit][x86] another forgotten case with unused flag in decomposition.
X-Git-Tag: accepted/tizen/base/20180629.140029~362
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c903f7bffdf606b728cab45e4fe14530d82d2ac8;p=platform%2Fupstream%2Fcoreclr.git

[RyuJit][x86] another forgotten case with unused flag in decomposition.

rotate nodes are rare, so it why we did not see it.
---

diff --git a/src/jit/decomposelongs.cpp b/src/jit/decomposelongs.cpp
index de5c089..7654c13 100644
--- a/src/jit/decomposelongs.cpp
+++ b/src/jit/decomposelongs.cpp
@@ -1553,6 +1553,11 @@ GenTree* DecomposeLongs::DecomposeRotate(LIR::Use& use)
         gtLong->gtOp.gtOp1 = loResult;
         gtLong->gtOp.gtOp2 = hiResult;
 
+        if (tree->IsUnusedValue())
+        {
+            gtLong->SetUnusedValue();
+        }
+
         GenTree* next = tree->gtNext;
         // Remove tree and don't do anything else.
         Range().Remove(tree);