[Bug target/90513] asm thunks do not work on PowerPC64/VxWorks (kernel mode)

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90513

--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed.  We have for the thunk

        .set    .LTHUNK0,_ZN12Intermediate1vEv


        .align 2
        .p2align 4,,15
        .globl _ZThn8_N12Intermediate1vEv
        .type   _ZThn8_N12Intermediate1vEv, @function
_ZThn8_N12Intermediate1vEv:
.LFB27:
        .cfi_startproc
.LCF2:
0:      addis 2,12,.TOC.-.LCF2@ha
        addi 2,2,.TOC.-.LCF2@l
        .localentry     _ZThn8_N12Intermediate1vEv,.-_ZThn8_N12Intermediate1vEv
        addi 3,3,-8
        b .LTHUNK0
        .cfi_endproc
.LFE27:
        .size   _ZThn8_N12Intermediate1vEv,.-_ZThn8_N12Intermediate1vEv


so this will not work unless the jump is optimised by the loader to jump to the
local entry point.  The compiler should not require the loader to do this.