Upgrade eigen to 3.4.0

Steps:
 * Removed common files between Android copy and the matching upstream copy
 * Obtained latest upstream tarball (see README.version)
 * Extracted over the directory

Bug: 148287349
Test: presubmit
Change-Id: Iee2744719075fdf000b315e973645923da766111

1 files changed, 12 insertions, 0 deletions

diff --git a/bench/perf_monitoring/gemvt.cpp b/bench/perf_monitoring/gemvt.cpp
new file mode 100644
index 000000000..fe945767e
--- /dev/null
+++ b/bench/perf_monitoring/gemvt.cpp
@@ -0,0 +1,12 @@
+#include "gemv_common.h"
+
+EIGEN_DONT_INLINE
+void gemv(const Mat &A, Vec &B, const Vec &C)
+{
+  B.noalias() += A.transpose() * C;
+}
+
+int main(int argc, char **argv)
+{
+  return main_gemv(argc, argv, gemv);
+}