sc: Implement ScVectorRefMatrix.

This is a ScMatrix implementation that operates directly on
formula::DoubleVectorRefToken, saving tremendous amount of copying data back
and forth.

Change-Id: I027e6cb668ef40eb474773a0ce8d0eeefc1ab71c

sc/source/core/inc/arraysumfunctor.hxx

@@ -11,6 +11,7 @@
 #ifndef INCLUDED_SC_SOURCE_CORE_INC_ARRAYSUMFUNCTOR_HXX
 #define INCLUDED_SC_SOURCE_CORE_INC_ARRAYSUMFUNCTOR_HXX
 
+#include <cstdint>
 #include <tools/cpuid.hxx>
 
 #if defined(LO_SSE2_AVAILABLE)

sc/source/core/tool/formulagroup.cxx

@@ -369,14 +369,23 @@ bool FormulaGroupInterpreterSoftware::interpret(ScDocument& rDoc, const ScAddres
                 case formula::svDoubleVectorRef:
                 {
                     const formula::DoubleVectorRefToken* p2 = static_cast<const formula::DoubleVectorRefToken*>(p);
-                    const std::vector<formula::VectorRefArray>& rArrays = p2->GetArrays();
-                    size_t nColSize = rArrays.size();
                     size_t nRowStart = p2->IsStartFixed() ? 0 : i;
                     size_t nRowEnd = p2->GetRefRowSize() - 1;
                     if (!p2->IsEndFixed())
                         nRowEnd += i;
+
+                    ScMatrixRef pMat;
+                    if (getenv("SC_ALLOW_SOFTWARE_INTERPRETER") != nullptr)
+                    {
+                        assert(nRowStart <= nRowEnd);
+                        pMat.reset(new ScVectorRefMatrix(p2, nRowStart, nRowEnd - nRowStart + 1));
+                    }
+                    else
+                    {
+                        const std::vector<formula::VectorRefArray>& rArrays = p2->GetArrays();
+                        size_t nColSize = rArrays.size();
                         size_t nRowSize = nRowEnd - nRowStart + 1;
-                    ScMatrixRef pMat(new ScFullMatrix(nColSize, nRowSize));
+                        pMat.reset(new ScFullMatrix(nColSize, nRowSize));
 
                         size_t nDataRowEnd = p2->GetArrayLength() - 1;
                         if (nRowStart > nDataRowEnd)
@@ -416,6 +425,7 @@ bool FormulaGroupInterpreterSoftware::interpret(ScDocument& rDoc, const ScAddres
                                 fillMatrix(*pMat, nCol, pNums, nRowSize);
                             }
                         }
+                    }
 
                     if (p2->IsStartFixed() && p2->IsEndFixed())
                     {