[Bug target/55212] [SH] Switch from IRA to LRA

[hp at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212

--- Comment #33 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #32)
> Patch for SH untyped_call
> config/sh/sh.md (untyped_call): Clobber function value registers before
> call.

(Sorry for butting in; I'm CC'ed with the purpose of observing issues likely to
pop up for my own ports.)

Will clobbering function-value registers before the call not cause problems on
SH5, where function-value registers and parameters registers overlap (IIUC)?

For reference, i386.md emits a blockage (i.e. *using* and clobbering all
registers).