If possible please provide dev-java/openjdk-bin:8 also for x86. https://bugs.gentoo.org/924945#c5 mentions https://www.azul.com/downloads/?version=java-8-lts&os=linux&architecture=x86-32-bit&package=jdk#zulu as source. Having openjdk-bin:8 for x86 would help to last rite old icedtea-bin.
Thanks for creating this bug. Azul seem to be the only vendor providing portable x86-32 8u binaries. Having an up-to-date 8u binary on x86-32 would be preferable for building both the dev-java/openjdk and dev-java/icedtea packages.
obsolete since openjdk:8 has got an x86 bootstrap tarball.