[PATCH] Fix df_get_entry_block_def_set for struct_value REGNOs (PR rtl-optimization/32636)

[Paolo Bonzini]

> but this justification doesn't hold for struct_value_rtx if it is
> a call used REG.  Because then the epilogue_completed code won't mark
> it, even when it is needed.  Fixed by the patch below, by moving marking
> of struct_value_rtx outside of the else.  Dave Anglin kindly bootstrapped/
> regtested this hppa2.0w-hp-hpux11.11 and hppa-linux
> and I have bootstrapped/regtested this on {i686,x86_64,ppc,ppc64}-linux.
> No testcase included, as we have one already in libstdc++ testsuite
> for this.
> 
> Ok for trunk?

Yes.

Paolo