GCC 4.8 arm EIGEN_OPTIMIZATION_BARRIER fix (#2315).

GCC 4.8 doesn't seem to like the `g` register constraint, failing to
compile with "error: 'asm' operand requires impossible reload".

Tested `r` instead, and that seems to work, even with latest compilers.

Also fixed some minor macro issues to eliminate warnings on armv7.

Fixes #2315.
2 files changed
tree: 3f36a7065c3890286ed5ab4a4f3dabce940139ba
  1. .gitlab/
  2. bench/
  3. blas/
  4. ci/
  5. cmake/
  6. debug/
  7. demos/
  8. doc/
  9. Eigen/
  10. failtest/
  11. lapack/
  12. scripts/
  13. test/
  14. unsupported/
  15. .gitignore
  16. .gitlab-ci.yml
  17. .hgeol
  18. CMakeLists.txt
  19. COPYING.APACHE
  20. COPYING.BSD
  21. COPYING.GPL
  22. COPYING.LGPL
  23. COPYING.MINPACK
  24. COPYING.MPL2
  25. COPYING.README
  26. CTestConfig.cmake
  27. CTestCustom.cmake.in
  28. eigen3.pc.in
  29. INSTALL
  30. README.md
  31. signature_of_eigen3_matrix_library
README.md

Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.

For more information go to http://eigen.tuxfamily.org/.

For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.