llvm-project

11a92a93 - [SystemZ] Add indirect reference bit XATTR REFERENCE(INDIRECT) for indirect symbol handling support (#183441)

[SystemZ] Add indirect reference bit XATTR REFERENCE(INDIRECT) for indirect symbol handling support (#183441) This is the first of three patches aimed to support indirect symbol handling for the SystemZ backend. This PR introduces a `GOFF:ERAttr` to represent indirect references, handles indirect symbols within `setSymbolAttribute()` by setting the indirect reference bit, and also updates the HLASM streamer to emit `XATTR REFERENCE(INDIRECT)` and various other combinations.