RFR: 8365053: Refresh hotspot precompiled.hpp with headers based on current frequency [v3]

[Francesco Andreuzzi]

On Fri, 8 Aug 2025 12:42:40 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Note that precompiled.hpp has an include count of 2456. There's 1 .d file that
depends on everything - BUILD_LIBJVM.d. That probably ought to be excluded
from counting, although I guess it should just add one to every file.

Apparently `BUILD_LIBJVM.d` mentions all files multiple times:

% grep "utilities/waitBarrier.hpp" build/clang/hotspot/variant-server/libjvm/objs/BUILD_LIBJVM.d | wc -l
1231


It's definitely reasonable to exclude it, I did it in the latest revision of the script.

Now, the numbers seem more reasonable:

% ls build/clang/hotspot/variant-server/libjvm/objs/*.d | grep -v BUILD | wc -l
1232
% grep "code/codeCache.hpp" build/clang/hotspot/variant-server/libjvm/objs/*.d | \
            grep -v BUILD | sort | uniq | wc -l
1230
% grep "code/codeCache.hpp" inclusions_count.txt
code/codeCache.hpp=1230


Updated [inclusions_count.txt](https://github.com/user-attachments/files/21685761/inclusions_count.txt)

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PR Review Comment: https://git.openjdk.org/jdk/pull/26681#discussion_r2263090433