Jeremy Morse 9f8544713a [DebugInfo] Store instr-ref mode of MachineFunction in member ...

Add a flag state (and a MIR key) to MachineFunctions indicating whether they
contain instruction referencing debug-info or not. Whether DBG_VALUEs or
DBG_INSTR_REFs are used needs to be determined by LiveDebugValues at least, and
using the current optimisation level as a proxy is proving unreliable.

Test updates are purely adding the flag to tests, in a couple of cases it
involves separating out VarLocBasedLDV/InstrRefBasedLDV tests into separate
files, as they can no longer share the same input.

Differential Revision: https://reviews.llvm.org/D141387

2023-01-20 14:47:11 +00:00

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