[Bug target/82303] Better PIE/PIC code generation for kernel code (x86_64 & arm64)

[thgarnie at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82303

--- Comment #16 from Thomas Garnier <thgarnie at google dot com> ---
Yes, I think you can't just default to the non-PIE mode.

Clang does it well though:

0000000000000000 <phy_modes>:
   0:   83 ff 16                cmp    $0x16,%edi
   3:   77 0f                   ja     14 <phy_modes+0x14>
   5:   48 63 c7                movslq %edi,%rax
   8:   48 8d 0d 00 00 00 00    lea    0x0(%rip),%rcx        # f
<phy_modes+0xf>
                        b: R_X86_64_PC32        .data.rel.ro-0x4
   f:   48 8b 04 c1             mov    (%rcx,%rax,8),%rax
  13:   c3                      retq   
  14:   48 8d 05 00 00 00 00    lea    0x0(%rip),%rax        # 1b
<phy_modes+0x1b>
                        17: R_X86_64_PC32       .L.str.23-0x4
  1b:   c3                      retq