Hey, finally the copyCoeff stuff is not only used to implement swap anymore :)

Add an internal pseudo expression allowing to optimize operators like +=, *= using
the copyCoeff stuff.
This allows to easily enforce aligned load for the destination matrix everywhere.

1 files changed, 56 insertions, 0 deletions

diff --git a/test/unalignedcount.cpp b/test/unalignedcount.cpp
new file mode 100644
index 000000000..feff870e5
--- /dev/null
+++ b/test/unalignedcount.cpp
@@ -0,0 +1,56 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+static int nb_load;
+static int nb_loadu;
+static int nb_store;
+static int nb_storeu;
+
+#define EIGEN_DEBUG_ALIGNED_LOAD    { nb_load++;    }
+#define EIGEN_DEBUG_UNALIGNED_LOAD  { nb_loadu++;   }
+#define EIGEN_DEBUG_ALIGNED_STORE   { nb_store++;   }
+#define EIGEN_DEBUG_UNALIGNED_STORE { nb_storeu++;  }
+
+#define VERIFY_ALIGNED_UNALIGNED_COUNT(XPR,AL,UL,AS,US) {\
+    nb_load = nb_loadu = nb_store = nb_storeu = 0; \
+    XPR; \
+    if(!(nb_load==AL && nb_loadu==UL && nb_store==AS && nb_storeu==US)) \
+      std::cerr << " >> " << nb_load << ", " << nb_loadu << ", " << nb_store << ", " << nb_storeu << "\n"; \
+    VERIFY( (#XPR) && nb_load==AL && nb_loadu==UL && nb_store==AS && nb_storeu==US ); \
+  }
+
+
+#include "main.h"
+
+void test_unalignedcount()
+{
+  #ifdef EIGEN_VECTORIZE_SSE
+  VectorXf a(40), b(40);
+  VERIFY_ALIGNED_UNALIGNED_COUNT(a += b, 20, 0, 10, 0);
+  VERIFY_ALIGNED_UNALIGNED_COUNT(a.segment(0,40) += b.segment(0,40), 10, 10, 10, 0);
+  VERIFY_ALIGNED_UNALIGNED_COUNT(a.segment(0,40) -= b.segment(0,40), 10, 10, 10, 0);
+  VERIFY_ALIGNED_UNALIGNED_COUNT(a.segment(0,40) *= 3.5, 10, 0, 10, 0);
+  VERIFY_ALIGNED_UNALIGNED_COUNT(a.segment(0,40) /= 3.5, 10, 0, 10, 0);
+  #endif
+}