bootcycle build on ix86-linux-gnu broken since jdk-13+18

[Matthias Klose]

My last successful bootcycle build on i686-linux-gnu was jdk-13+18. After that I
tried jdk-13+22, which didn't build anymore, with no change to the most recent
jdk-13+25, and also seen in jdk-14+1.

All builds fail with

Compiling 12 properties into resource bundles for jdk.jdeps
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 2155274940 bytes for
AllocateHeap
# An error report file with more information is saved as:

It looks like the normal build instead of the bootcycle build succeeds.  Does
anybody else is doing regular ix86 builds and could help narrowing down when
this started to fail?

Thanks, Matthias