On Thu, 6 Feb 2025 13:52:49 GMT, Matthias Baesken <mbaes...@openjdk.org> wrote:

> The splashscreen lib is currently built with LOW optimization.
> This might be fine because it is not very performance critical  (and LOW is 
> not really low when looking at the opt-flags used).
> But building it with SIZE optimization makes it 10-20 % smaller on some 
> platforms which helps to reduce image size.
> 
> current settings (LOW optimization) :
> ---------------------------------------------------
> 2.5M /aix_ppc64/jdk-opt/images/jdk/lib/libsplashscreen.so  (not split 
> debuginfo file on AIX currently)
> 
> 468K /macosaarch64/jdk-opt/images/jdk/lib/libsplashscreen.dylib
> 1.6M /macosaarch64/jdk-opt/images/jdk/lib/libsplashscreen.dylib.dSYM
> 388K /macosintel64/jdk-opt/images/jdk/lib/libsplashscreen.dylib
> 1.5M /macosintel64/jdk-opt/images/jdk/lib/libsplashscreen.dylib.dSYM
> 
> 368K /linux_aarch64/jdk-opt/images/jdk/lib/libsplashscreen.so
> 1.7M /linux_aarch64/jdk-opt/images/jdk/lib/libsplashscreen.debuginfo
> 376K /linux_alpine_x86_64/jdk-opt/images/jdk/lib/libsplashscreen.so
> 1.8M /linux_alpine_x86_64/jdk-opt/images/jdk/lib/libsplashscreen.debuginfo
> 500K /linux_ppc64le/jdk-opt/images/jdk/lib/libsplashscreen.so
> 1.7M /linux_ppc64le/jdk-opt/images/jdk/lib/libsplashscreen.debuginfo
> 364K /linux_x86_64/jdk-opt/images/jdk/lib/libsplashscreen.so
> 1.7M /linux_x86_64/jdk-opt/images/jdk/lib/libsplashscreen.debuginfo
> 
> 
> new settings (SIZE optimization) :
> --------------------------------------------------
> 2.1M /aix_ppc64/jdk-dev-opt/images/jdk/lib/libsplashscreen.so    (not split 
> debuginfo file on AIX currently)
> 
> 404K /macosaarch64/jdk-dev-opt/images/jdk/lib/libsplashscreen.dylib
> 1.5M /macosaarch64/jdk-dev-opt/images/jdk/lib/libsplashscreen.dylib.dSYM
> 316K /macosintel64/jdk-dev-opt/images/jdk/lib/libsplashscreen.dylib
> 1.4M /macosintel64/jdk-dev-opt/images/jdk/lib/libsplashscreen.dylib.dSYM
> 
> 372K /linux_aarch64/jdk-dev-opt/images/jdk/lib/libsplashscreen.so
> 1.5M /linux_aarch64/jdk-dev-opt/images/jdk/lib/libsplashscreen.debuginfo
> 304K /linux_alpine_x86_64/jdk-dev-opt/images/jdk/lib/libsplashscreen.so
> 1.5M /linux_alpine_x86_64/jdk-dev-opt/images/jdk/lib/libsplashscreen.debuginfo
> 376K /linux_ppc64le/jdk-dev-opt/images/jdk/lib/libsplashscreen.so
> 1.4M /linux_ppc64le/jdk-dev-opt/images/jdk/lib/libsplashscreen.debuginfo
> 304K /linux_x86_64/jdk-dev-opt/images/jdk/lib/libsplashscreen.so
> 1.4M /linux_x86_64/jdk-dev-opt/images/jdk/lib/libsplashscreen.debuginfo
> 
> On Linux aarch64 only the debuginfo shrinks but the lib stays about the same 
> in size. Maybe -Os does not work as well on this platform.
> Other UNIX pl...

This pull request has now been integrated.

Changeset: c2fc9478
Author:    Matthias Baesken <mbaes...@openjdk.org>
URL:       
https://git.openjdk.org/jdk/commit/c2fc94782669ae1645014ee3bfeba957dbff4669
Stats:     1 line in 1 file changed: 0 ins; 0 del; 1 mod

8349378: Build splashscreen lib with SIZE optimization

Reviewed-by: erikj, prr, honkar

-------------

PR: https://git.openjdk.org/jdk/pull/23493

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