Summary
Environment
- Operating System : Windows/Linux
 - Architecture : x64/Arm64/PowerPC ...
 - Eigen Version : 3.3.9
 - Compiler Version : Gcc7.0
 - Compile Flags : -O3 -march=native
 - Vector Extension : SSE/AVX/NEON ...
 
Minimal Example
//show your code here
Steps to reproduce
- first step
 - second step
 - ...
 
What is the current bug behavior?
What is the expected correct behavior?
Relevant logs
Warning Messages
Benchmark scripts and results
Anything else that might help
- [ ] Have a plan to fix this issue.