Public Member Functions | |
| int | delay (self) |
| Object | fan_in (self) |
| Object | fan_out (self) |
| List[DebugPoint] | history (self) |
| str | root (self) |
| str | to_flamegraph (self) |
Protected Member Functions | |
| str | _build_hierarchy_string (self, Object obj, str prefix="") |
Static Protected Attributes | |
| _LongestPathDataflowPath | _path |
Detailed Description
Represents a complete dataflow path from fan-out to fan-in.
A dataflow path captures the complete timing path through a circuit,
from an output point (fan-out) back to an input point (fan-in), including
all intermediate debug points and the total delay.
Attributes:
fan_out: The output signal/object where this path ends
path: The OpenPath containing the detailed path information
root: The root module name for this analysis
Member Function Documentation
◆ _build_hierarchy_string()
|
protected |
Build a hierarchical string representation of an Object for FlameGraph format.
This method constructs a semicolon-separated hierarchy string that represents
the full path from the top-level module down to the specific signal. This
format is compatible with FlameGraph visualization tools.
Args:
obj: Object to represent in the hierarchy
prefix: Top-level prefix (typically "top:module_name")
Returns:
Hierarchical string in format: "top:root;module1:inst1;module2:inst2;signal[bit]"
Definition at line 202 of file aig.py.
Referenced by aig.DataflowPath.to_flamegraph().
◆ delay()
| int aig.DataflowPath.delay | ( | self | ) |
Get the total delay of this path in timing units.
Definition at line 132 of file aig.py.
References aig.DataflowPath._path.
Referenced by aig.DataflowPath.to_flamegraph().
◆ fan_in()
| Object aig.DataflowPath.fan_in | ( | self | ) |
Get the input signal/object where this path begins.
Definition at line 137 of file aig.py.
References aig.DataflowPath._path.
Referenced by aig.DataflowPath.to_flamegraph().
◆ fan_out()
| Object aig.DataflowPath.fan_out | ( | self | ) |
Get the output signal/object where this path ends.
Definition at line 142 of file aig.py.
References aig.DataflowPath._path.
Referenced by aig.DataflowPath.to_flamegraph().
◆ history()
| List[DebugPoint] aig.DataflowPath.history | ( | self | ) |
Get the history of debug points along this path.
Definition at line 147 of file aig.py.
References aig.DataflowPath._path.
Referenced by aig.LongestPathHistory.__iter__(), and aig.DataflowPath.to_flamegraph().
◆ root()
| str aig.DataflowPath.root | ( | self | ) |
Get the root module name for this analysis.
Definition at line 152 of file aig.py.
References aig.DataflowPath._path.
Referenced by circt::aig::DataflowPath.prependPaths(), circt::aig::DataflowPath.print(), and circt::aig::DataflowPath.printFanOut().
◆ to_flamegraph()
| str aig.DataflowPath.to_flamegraph | ( | self | ) |
Convert this path to FlameGraph format for visualization.
FlameGraphs are a visualization technique that shows call stacks or
in this case, timing paths through the circuit hierarchy. Each line
represents a segment of the path with its associated delay.
The format is: "hierarchy_path delay_increment"
where hierarchy_path uses semicolons to separate hierarchy levels.
Returns:
String in FlameGraph format showing the timing path progression
Definition at line 160 of file aig.py.
References aig.DataflowPath._build_hierarchy_string(), circt::aig::DebugPoint.delay, circt::aig::OpenPath.delay, circt::datapath::CompressorBit.delay, aig.DebugPoint.delay, aig.DataflowPath.delay(), DriveOperands.delay, Interval.delay, TechLibraryPattern.delay, aig.DataflowPath.fan_in(), aig.DataflowPath.fan_out(), circt::aig::OpenPath.history, aig.DataflowPath.history(), and aig.LongestPathHistory.history.
Member Data Documentation
◆ _path
|
staticprotected |
Definition at line 129 of file aig.py.
Referenced by aig.DataflowPath.delay(), aig.DataflowPath.fan_in(), aig.DataflowPath.fan_out(), aig.DataflowPath.history(), and aig.DataflowPath.root().
The documentation for this class was generated from the following file:
- /home/runner/work/circt-www/circt-www/circt_src/lib/Bindings/Python/dialects/aig.py
