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Hi Folks,
I recently upgraded an existing project to VS2019 v16.1.4 and Eigen 3.3.7. The debug compilation time is about a minute and 40 seconds, but the release build with /O2 and /Ob2 switches is taking more than an hour and a half. The release build on the previous environment with VS2017 v15.7 and Eigen 3.3.5 was about 3 or 4 minutes. I ran the compilation with /d2cgsummary https://devblogs.microsoft.com/cppblog/visual-studio-2017-throughput-improvements-and-advice/ switch to find out which part of the code is taking most of the compilation time, here is a section of the output de-mangled:
I was wondering if anyone faced the same problem. Any thoughts? Thanks |
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