As far as I known, for temp labels, only MCAsmStreamer will use name on
temp labels, other MCStreamers will emit an unnamed temp symbol for temp
label.
In RISCV, because of some dwarf sections need to use temp label (like
section's begin label) to compute section length, these temp labels will be
placed in the object file's symbol table. For example:
```
$ readelf --syms hello.o
Symbol table '.symtab' contains 24 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000000000 0 FILE LOCAL DEFAULT ABS hello.c
2: 0000000000000002 0 NOTYPE LOCAL DEFAULT 2
3: 0000000000000002 0 NOTYPE LOCAL DEFAULT 2
4: 0000000000000002 0 NOTYPE LOCAL DEFAULT 2
5: 0000000000000004 0 NOTYPE LOCAL DEFAULT 2
6: 0000000000000008 0 NOTYPE LOCAL DEFAULT 2
7: 0000000000000008 0 NOTYPE LOCAL DEFAULT 2
8: 000000000000000a 0 NOTYPE LOCAL DEFAULT 2
```
The second symbol to 8th symbol are unnamed symbols.
However, llvm's JITLink only allow named symbols.
How can I solve that ?
Make RISCVELFStreamer using name on temp labels? Or change JITLink ?
Or other ways ?
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