From cd133f77eedeca8c507ead6e49d53fed7791354b Mon Sep 17 00:00:00 2001
From: Justin Viiret <justin.viiret@intel.com>
Date: Mon, 8 Feb 2016 10:21:17 +1100
Subject: [PATCH] DEDUPE instr: generate only when necessary

---
 src/rose/rose_build_bytecode.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/rose/rose_build_bytecode.cpp b/src/rose/rose_build_bytecode.cpp
index c067b6a3..81b28197 100644
--- a/src/rose/rose_build_bytecode.cpp
+++ b/src/rose/rose_build_bytecode.cpp
@@ -3084,7 +3084,11 @@ void makeReport(RoseBuildImpl &build, const ReportID id, const bool has_som,
     switch (report.type) {
     case EXTERNAL_CALLBACK:
         if (!has_som) {
-            makeDedupe(id, report_block);
+            // Dedupe is only necessary if this report has a dkey, or if there
+            // are SOM reports to catch up.
+            if (build.rm.getDkey(report) != ~0U || build.hasSom) {
+                makeDedupe(id, report_block);
+            }
             if (report.ekey == INVALID_EKEY) {
                 report_block.emplace_back(ROSE_INSTR_REPORT);
                 report_block.back().u.report.report = id;