From 41ba5f649f361bfa6965a7c8f2e2ffa084317c45 Mon Sep 17 00:00:00 2001
From: Eike Rathke <erack@redhat.com>
Date: Thu, 1 Jun 2017 19:46:27 +0200
Subject: Perf: do not calculate a null-operation with the result matrix,
 tdf#58874

Change-Id: I6fe115ff7ec7960900863ddaf1cd1dc48975fd74
---
 sc/source/core/inc/interpre.hxx  |  2 +-
 sc/source/core/tool/interpr1.cxx | 18 ++++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/sc/source/core/inc/interpre.hxx b/sc/source/core/inc/interpre.hxx
index 53190038bd9b..9b36afec2e05 100644
--- a/sc/source/core/inc/interpre.hxx
+++ b/sc/source/core/inc/interpre.hxx
@@ -575,7 +575,7 @@ size_t GetRefListArrayMaxSize( short nParamCount );
 /** Switch to array reference list if current TOS is one and create/init or
     update matrix and return true. Else return false. */
 bool SwitchToArrayRefList( ScMatrixRef& xResMat, SCSIZE nMatRows, double fCurrent,
-        const std::function<void( SCSIZE i, double fCurrent )>& MatOpFunc );
+        const std::function<void( SCSIZE i, double fCurrent )>& MatOpFunc, bool bDoMatOp );
 void IterateParameters( ScIterFunc, bool bTextAsZero = false );
 void ScSumSQ();
 void ScSum();
diff --git a/sc/source/core/tool/interpr1.cxx b/sc/source/core/tool/interpr1.cxx
index 845be4b5e523..0d75c3f79834 100644
--- a/sc/source/core/tool/interpr1.cxx
+++ b/sc/source/core/tool/interpr1.cxx
@@ -3457,7 +3457,7 @@ void ScInterpreter::ScUnichar()
 }
 
 bool ScInterpreter::SwitchToArrayRefList( ScMatrixRef& xResMat, SCSIZE nMatRows, double fCurrent,
-        const std::function<void( SCSIZE i, double fCurrent )>& MatOpFunc )
+        const std::function<void( SCSIZE i, double fCurrent )>& MatOpFunc, bool bDoMatOp )
 {
     const ScRefListToken* p = dynamic_cast<const ScRefListToken*>(pStack[sp-1]);
     if (!p || !p->IsArrayResult())
@@ -3470,7 +3470,7 @@ bool ScInterpreter::SwitchToArrayRefList( ScMatrixRef& xResMat, SCSIZE nMatRows,
         xResMat = GetNewMat( 1, nMatRows, true);
         xResMat->FillDouble( fCurrent, 0,0, 0,nMatRows-1);
     }
-    else
+    else if (bDoMatOp)
     {
         // Current value and values from vector are operands
         // for each vector position.
@@ -3533,8 +3533,13 @@ void ScInterpreter::ScMin( bool bTextAsZero )
             break;
             case svRefList :
             {
-                if (SwitchToArrayRefList( xResMat, nMatRows, nMin, MatOpFunc))
+                // bDoMatOp only for non-array value when switching to
+                // ArrayRefList.
+                if (SwitchToArrayRefList( xResMat, nMatRows, nMin, MatOpFunc,
+                            nRefArrayPos == std::numeric_limits<size_t>::max()))
+                {
                     nRefArrayPos = nRefInList;
+                }
             }
             SAL_FALLTHROUGH;
             case svDoubleRef :
@@ -3683,8 +3688,13 @@ void ScInterpreter::ScMax( bool bTextAsZero )
             break;
             case svRefList :
             {
-                if (SwitchToArrayRefList( xResMat, nMatRows, nMax, MatOpFunc))
+                // bDoMatOp only for non-array value when switching to
+                // ArrayRefList.
+                if (SwitchToArrayRefList( xResMat, nMatRows, nMax, MatOpFunc,
+                            nRefArrayPos == std::numeric_limits<size_t>::max()))
+                {
                     nRefArrayPos = nRefInList;
+                }
             }
             SAL_FALLTHROUGH;
             case svDoubleRef :
-- 
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