JuliaDebug/Cthulhu.jl

Display of CFGs and DomTrees

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#26 opened on Feb 28, 2019

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enhancementgood first issuehelp wanted

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Description

Would be fabolous to add some pretty printing for the CFG and dominator trees.

Keno apparently uses this snippet for DomTrees. We could use dot for the CFG like opt does it.

using AbstractTrees
using Core.Compiler: DomTree

AbstractTrees.treekind(d::DomTree) = AbstractTrees.IndexedTree()
AbstractTrees.childindices(d::DomTree, i::Int) = d[i].children
AbstractTrees.childindices(::DomTree, ::DomTree) = (1,)
AbstractTrees.parentlinks(::DomTree) = AbstractTrees.StoredParents()
AbstractTrees.printnode(io::IO, i::Int, d::DomTree) = print(io, i)
Base.getindex(d::DomTree, i) = d.nodes[i]
Base.show(io::IO, d::DomTree) = print_tree(io, 1; roottree = d)

Contributor guide

Research direction
Implement pretty printing for CFG and dominator trees. Use AbstractTrees for the DomTree and dot for the CFG. Refer to the provided snippet for DomTree, and look at how `opt` uses `dot` for CFG visualization.
Tech stack
julia
Domain
developer experiencetooling
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JuliaAbstractTreesGraphviz
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65