[Bug target/58901] vax bootstrap fails on subreg reload

[coypu at sdf dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58901

coypu <coypu at sdf dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |coypu at sdf dot org

--- Comment #7 from coypu <coypu at sdf dot org> ---
Created attachment 46884
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46884&action=edit
matt's changes, synced by other matt, against trunk.

Confirming as still occurring in gcc-trunk as of:
xgcc (GCC) 10.0.0 20190907 (experimental)

NetBSD has a local diff to avoid this crash.
I attached it (updated for trunk) for reference.

The commit message for it (by Matt Thomas):
https://github.com/NetBSD/src/commit/e437e96750193b86d0464965661f616e011056fa

"Fix a problem with reloading the inner reg of a subreg when it's a mode
dependent address."