On Wed, May 5, 2021 at 12:19 AM Gary Oblock via Gcc <gcc@gcc.gnu.org> wrote:
>
> My jaws hit the floor when I saw this bug:
>
> psimplex.c: In function ‘master.constprop’:
> psimplex.c:124:6: error: non-trivial conversion in ‘constructor’
> 124 | void master(network_t *net, int num_threads)
> | ^
> struct _modif_basket *[4061]
> struct _modif_basket *[4061]
> struct _modif_basket *[4061]
> struct _modif_basket *[4061]
> # .MEM_111 = VDEF <.MEM_103>
> perm ={v} {CLOBBER};
> during GIMPLE pass: fixup_cfg
> psimplex.c:124:6: internal compiler error: verify_gimple failed
> 0x12da3a4 verify_gimple_in_cfg(function*, bool)
> ../../sources/gcc/tree-cfg.c:5482
> 0x10e69f8 execute_function_todo
> ../../sources/gcc/passes.c:1992
> 0x10e598b do_per_function
> ../../sources/gcc/passes.c:1640
> 0x10e6be8 execute_todo
> ../../sources/gcc/passes.c:2046
>
> I've included a bit too much stuff but the bit that
> confused the heck out of me was the
>
> struct _modif_basket *[4061]
> struct _modif_basket *[4061]
>
> associated with the clobber.
>
> I've been banging away for few days
> trying to make the types associated with
> the left and right hand sides of this clobber
> agree and now it's complaining about that
> too?!
>
> The type of perm has changed so what
> should right hand type be now?
The same type? ;) Try dumping with -uid which
will get you type and decl UIDs printed. Maybe
you have multple instances of 'struct _modif_basket'.
> When
> dumping out other instances of clobber,
> the instances all matched so why should
> this need to be different?
>
> Thanks,
>
> Gary
>
>
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