LLVM: LiveDebugValues::VLocTracker Class Reference (original) (raw)

Collection of DBG_VALUEs observed when traversing a block.

Records each variable and the value the DBG_VALUE refers to. Requires the machine value location dataflow algorithm to have run already, so that values can be identified.

Definition at line 1039 of file InstrRefBasedImpl.h.

Map DebugVariable to the latest Value it's defined to have.

Needs to be a MapVector because we determine order-in-the-input-MIR from the order in this container. (FIXME: likely no longer true as the ordering is now provided by DebugVariableMap). We only retain the last DbgValue in each block for each variable, to determine the blocks live-out variable value. The Vars container forms the transfer function for this block, as part of the dataflow analysis. The movement of values between locations inside of a block is handled at a much later stage, in the TransferTracker class.

Definition at line 1052 of file InstrRefBasedImpl.h.

Referenced by clear(), considerOverlaps(), and defVar().