[Bug rtl-optimization/64081] [5/6/7 Regression] r217827 prevents RTL loop unroll

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64081

--- Comment #51 from David Edelsohn <dje at gcc dot gnu.org> ---
If you use /scratch for source, build and TMPDIR, as well as

SHELL=/usr/bin/bash CONFIG_SHELL=/usr/bin/bash

it should build faster on AIX.