RFR: 8365053: Refresh hotspot precompiled.hpp with headers based on current frequency [v11]

[Francesco Andreuzzi]

On Thu, 14 Aug 2025 09:27:24 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> If I recall correctly the original approach was even simpler: I counted the number of #includes in the C++ source files, not in the dependency files of a particular build. Crude but effective, and left out discussions about differences between platforms and feature configurations. And then I had to do some adjustments for Windows where my approach of excluding inline files did not hold and caused a regression.

That was also the initial approach in this PR, I got the suggestion from the first comments I got here.

> But then again, this is basically an optimization problem (even if it is not about running code in the JVM, but about optimizing build speed) so there is no way around the mantra of measure, measure and measure again.

Yeah I see, I'll give it another shot next week.

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PR Comment: https://git.openjdk.org/jdk/pull/26681#issuecomment-3191518492