[PATCH] Fix PR 109919: ICE in emit_move_insn with some bit tests

[Jeff Law]

On 5/20/23 21:05, Andrew Pinski wrote:
> On Sat, May 20, 2023 at 6:26 PM Jeff Law via Gcc-patches
> <gcc-patches@gcc.gnu.org> wrote:
>>
>>
>>
>> On 5/20/23 19:09, Andrew Pinski via Gcc-patches wrote:
>>> The problem is I used expand_expr with the target but
>>> we don't want to use the target here as it is the wrong
>>> mode for the original expression. The testcase would ICE
>>> deap down while trying to do a move to use the target.
>>> Anyways just calling expand_expr with NULL_EXPR fixes
>>> the issue.
>>>
>>> Committed as obvious after a bootstrap/test on x86_64-linux-gnu.
>>>
>>>        PR middle-end/109919
>>>
>>> gcc/ChangeLog:
>>>
>>>        * expr.cc (expand_single_bit_test): Don't use the
>>>        target for expand_expr.
>>>
>>> gcc/testsuite/ChangeLog:
>>>
>>>        * gcc.c-torture/compile/pr109919-1.c: New test.
>> Thanks.  I'll respin the targets that failed.  If you don't hear from
>> me, assume everything is happy again after this fix.
> 
> Oh, I am going to test on aarch64-linux-gnu too just in case.
> Expand is definitely something which I am not used to working on so I
> figured I had made a mistake somewhere. I suspect I still made a
> similar mistake later on too.
I'm seeing some execution failures.  Building H8 bits now to debug as 
it's the target I'm most familiar with.   More info as it's available.

jeff