Issue during combine.

[Henri Cloetens]

Hello Richard, all,

Well, I guess there is the confusion.
- For me, this is a constant int.
- For gcc, apparently not.
Anyway, I changed the mode, and now it works.

Many thanks, Best Regards,

Henri.


On 10/20/2020 03:19 PM, Richard Earnshaw wrote:
> On 19/10/2020 13:53, Henri Cloetens wrote:
>> Hello all,
>>
>> I am building a gcc 9.2.0 custom compiler, and I am running in an issue
>> during step 263, combine.
>>
>> Before combine:
>>
>> /(insn 2354 2352 1743 175 (set (reg/v:SI 197 [ dig ])//
>> //        (if_then_else (eq (subreg:QI (reg:SI 632) 1)//
> Your problem is likely here, on the input.  The SET_SRC (the
> if_then_else) of the pattern should have the same mode as the SET_DEST,
> unless the SET_SRC is a CONST_INT.
>
>