Re: [PATCH] x86: Also check non-local variable for argument-linked memory

On Sat, Aug 1, 2026 at 5:12 AM H.J. Lu <[email protected]> wrote:
>
> When checking if a register argument is used as local variable, also
> return true if non-local variable is the source of the argument-linked
> memory store.
>
> gcc/
>
> PR target/126529
> * config/i386/i386.cc (ix86_spill_register_argument_p): Also
> check non-local variable source for the argument-linked memory
> store.
>
> gcc/testsuite/
>
> PR target/126529
> * gcc.target/i386/pr126529.c: New test.

This is the third patch in the same area, so it IMO points to a more
systematic issue. Please find someone else that is able to thoroughly
review the patch (and the core issue that lies behind these problems)
from the generic middle-end side of the compiler.

Uros.