Add function not backed by file / Unexpected operation LLIL_SET_REG_SPLIT

[bloombit-dev]

Version and Platform (required):

• Binary Ninja Version: 5.4.10303-dev
• Edition: Ultimate
• OS: MacOS
• OS Version: 26.5.2
• CPU Architecture: M4 Max
• File: topaz forge strikes quietly

Bug Description:
...
Analysis phase 2.2 starts
...
[Analysis] Attempting to add function not backed by file: 0xff51c0f0
^ handful of these logs
...
[Binary Ninja.LowLevelIl.Expression] Got unexpected operation LLIL_SET_REG_SPLIT in value expr at 0x6977dc
[Binary Ninja.LowLevelIl.Expression] Got unexpected operation LLIL_SET_REG_SPLIT in value expr at 0x6977dc
[Binary Ninja.LowLevelIl.Expression] Got unexpected operation LLIL_SET_REG_SPLIT in value expr at 0x6977dc
[Binary Ninja.LowLevelIl.Expression] Got unexpected operation LLIL_SET_REG_SPLIT in value expr at 0x6977dc
...

Steps To Reproduce:

1. Load file with Default settings or load file with intermediate analysis mode with function size and time limit disabled.

Expected Behavior:
Reporting in case logs are of interest. Using this file in my unit testing.

Binary:
topaz forge strikes quietly