#3948 Ascon tests fail for stm8 with --max-allocs-per-node 100

[Philipp Klaus Krause]

The regression tests support/regression/asconaead128.c.in and support/regression/asconhash256.c.in fail for make test-stm8 when using --max-allocs-per-node 100:

   Failure: asconaead128_op_decrypt_impl_ref
   Failure: asconaead128_op_encrypt_impl_ref
   Failure: asconhash256_impl_ref

[Philipp Klaus Krause]

For asconhash256_impl_ref, the bug can be reproduced on my Debian GNU/Linux testing on amd64 system using --max-allocs-per-node 904, but not --max-allocs-per-node 905.

For asconaead128_op_encrypt_impl_ref it happens between 1754 and 1755, for asconaead128_op_decrypt_impl_ref somewhere between 1700 and 1740.

For all this Ascon stuff, however I still see a huge diff in the generated asm, due to the excessive use of inlining.