Re: [PATCH] regcprop: Return early in maybe_mode_change for unorder modes [PR124649]

[Jeffrey Law]

On 3/26/2026 8:06 PM, Andrew Pinski wrote:
> Like r16-727-g2ec5082dd24cef but the call to partial_subreg_p happens
> in a later place, maybe_mode_change.
> For this example we have VNx4QImode and DImode which are not ordered.
>
> Bootstrapped and tested on aarch64-linux-gnu.
>
>       PR rtl-optimization/124649
>
> gcc/ChangeLog:
>
>       * regcprop.cc (maybe_mode_change): Return early
>       for unordered modes.
>
> gcc/testsuite/ChangeLog:
>
>       * gcc.dg/torture/pr124649-1.c: New test.
OK.
jeff