[Bug target/71153] aarch64 LSE __atomic_fetch_and() generates inversion for constants

[dhowells at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71153

--- Comment #8 from dhowells at redhat dot com <dhowells at redhat dot com> ---
(In reply to Andrew Pinski from comment #7)
> Created attachment 38509 [details]
> Full fix which needs full testing

This is looking good:

0000000000000058 <foo_clear_bit_unlock>:
  58:   12001403        and     w3, w0, #0x3f
  5c:   9346fc02        asr     x2, x0, #6
  60:   d2800020        mov     x0, #0x1                        // #1
  64:   8b020c21        add     x1, x1, x2, lsl #3
  68:   9ac32000        lsl     x0, x0, x3
  6c:   f8601020        ldclrl  x0, x0, [x1]
  70:   d65f03c0        ret

0000000000000074 <bar_clear_bit_unlock>:
  74:   d2a00801        mov     x1, #0x400000                   // #4194304
  78:   f8611001        ldclrl  x1, x1, [x0]
  7c:   d65f03c0        ret