restore incorrectly removed code

149a4d7566 removed NeedParallelReduction() even though the code should
be there. I'm not sure about GenSlidingWindowFunction(), since the base
class is a template, but better revert that one too.
Also revert that part of 73e6a7975b that removed the subsequently
no longer used functions.

Change-Id: I932ffd58f9528ec840c4575078f8356640eb5420
Reviewed-on: https://gerrit.libreoffice.org/64249
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>
(cherry picked from commit 27f27e107730cc2242df578fd3e6dbb1a7117066)
Reviewed-on: https://gerrit.libreoffice.org/64468

1 files changed, 17 insertions, 0 deletions

diff --git a/sc/source/core/opencl/formulagroupcl.cxx b/sc/source/core/opencl/formulagroupcl.cxx
index 4449b0f1e0e1..04c95a8de21f 100644
--- a/sc/source/core/opencl/formulagroupcl.cxx
+++ b/sc/source/core/opencl/formulagroupcl.cxx
@@ -971,6 +971,17 @@ public:
         bIsEndFixed = mpDVR->IsEndFixed();
     }
 
+    // Should only be called by SumIfs. Yikes!
+    virtual bool NeedParallelReduction() const
+    {
+        assert(dynamic_cast<OpSumIfs*>(mpCodeGen.get()));
+        return GetWindowSize() > 100 &&
+               ((GetStartFixed() && GetEndFixed()) ||
+            (!GetStartFixed() && !GetEndFixed()));
+    }
+
+    virtual void GenSlidingWindowFunction( std::stringstream& ) { }
+
     std::string GenSlidingWindowDeclRef( bool nested = false ) const
     {
         size_t nArrayLength = mpDVR->GetArrayLength();
@@ -1112,6 +1123,12 @@ public:
 
     size_t GetArrayLength() const { return mpDVR->GetArrayLength(); }
 
+    size_t GetWindowSize() const { return mpDVR->GetRefRowSize(); }
+
+    size_t GetStartFixed() const { return bIsStartFixed; }
+
+    size_t GetEndFixed() const { return bIsEndFixed; }
+
 protected:
     bool bIsStartFixed, bIsEndFixed;
     const formula::DoubleVectorRefToken* mpDVR;