[lld][LoongArch] Relax TLSDESC code sequence (#123677)
Relax TLSDESC code sequence.
Original code sequence:
* pcalau12i $a0, %desc_pc_hi20(sym_desc)
* addi.d $a0, $a0, %desc_pc_lo12(sym_desc)
* ld.d $ra, $a0, %desc_ld(sym_desc)
* jirl $ra, $ra, %desc_call(sym_desc)
Cannot convert to LE/IE, but relax:
* pcaddi $a0, %desc_pcrel_20(sym_desc)
* ld.d $ra, $a0, %desc_ld(sym_desc)
* jirl $ra, $ra, %desc_call(sym_desc)
TODO: The transition from TLSDESC GD/LD to IE/LE will implement in a
future patch.
0ec94983c4