fix bugs (Run ID: openSVM_lessvm_issue_4_d999e602)

[agentfarmx]

agent_instance: openSVM_lessvm_issue_4_d999e602 Tries to fix: #4

🛠️ Fixed bugs in LessVM implementation

• Fixed: SIMD implementation in vector_add() function by correctly loading two different vectors instead of adding a vector to itself
• Improved: Memory management with increased default memory size to 8KB and more efficient memory growth strategy (50% growth instead of doubling)
• Implemented: Missing opcodes for Graph, OHLCV, and Hypergraph operations along with proper DataStructureStore management

These changes make LessVM more robust and capable of handling complex applications while addressing all issues identified in the analysis report. Please review these fixes that enhance the core VM functionality.

Summary by Sourcery

Fixes bugs and implements missing opcodes for Graph, OHLCV, and Hypergraph operations, enhancing the core VM functionality. Also improves memory management with increased default memory size and a more efficient memory growth strategy.

New Features:

• Implements missing opcodes for Graph, OHLCV, and Hypergraph operations along with proper DataStructureStore management.

Bug Fixes:

• Fixes a bug in the SIMD implementation of the vector_add() function by correctly loading two different vectors instead of adding a vector to itself.
• Fixes memory management with increased default memory size to 8KB and a more efficient memory growth strategy (50% growth instead of doubling).

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request fixes bugs and enhances the LessVM implementation by correcting the SIMD implementation in vector_add(), improving memory management, and implementing missing opcodes for Graph, OHLCV, and Hypergraph operations. It also introduces proper DataStructureStore management.

Sequence diagram for vector_add operation

sequenceDiagram
    participant VM
    VM->>VM: _mm256_loadu_si256(stack[top] to values2)
    VM->>VM: stack.pop() x 4
    VM->>VM: _mm256_loadu_si256(stack[top] to values1)
    VM->>VM: result = _mm256_add_epi64(values1, values2)
    VM->>VM: stack.push(result) x 4

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Sequence diagram for GraphAddEdge operation

sequenceDiagram
    participant VM
    participant DataStructureStore
    participant GraphDS
    VM->>VM: Pop weight, to, from, and id from stack
    VM->>DataStructureStore: Access graph with id
    alt Graph exists
        DataStructureStore->>GraphDS: add_edge(from, to, weight)
        GraphDS-->>DataStructureStore: Result
    else Graph does not exist
        DataStructureStore-->>VM: Error: InvalidDataStructureOperation
    end

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Sequence diagram for OhlcvAddBar operation

sequenceDiagram
    participant VM
    participant DataStructureStore
    participant OHLCVDS
    VM->>VM: Pop timestamp, open, high, low, close, volume, and id from stack
    VM->>DataStructureStore: Access ohlcv with id
    alt OHLCV exists
        DataStructureStore->>OHLCVDS: add_entry(timestamp, open, high, low, close, volume)
        OHLCVDS-->>DataStructureStore: Result
    else OHLCV does not exist
        DataStructureStore-->>VM: Error: InvalidDataStructureOperation
    end

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Sequence diagram for HyperAddNodeToEdge operation

sequenceDiagram
    participant VM
    participant DataStructureStore
    participant HypergraphDS
    VM->>VM: Pop node_id, edge_id, and id from stack
    VM->>DataStructureStore: Access hypergraph with id
    alt Hypergraph exists
        DataStructureStore->>HypergraphDS: add_node_to_edge(edge_id, node_id)
        HypergraphDS-->>DataStructureStore: Result
    else Hypergraph does not exist
        DataStructureStore-->>VM: Error: InvalidDataStructureOperation
    end

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Updated class diagram for DataStructureStore

classDiagram
    class DataStructureStore {
        btrees: Vec<Option<BTreeMapDS>>
        tries: Vec<Option<TrieDS>>
        graphs: Vec<Option<GraphDS>>
        ohlcvs: Vec<Option<OHLCVDS>>
        hypergraphs: Vec<Option<HypergraphDS>>
        +new() DataStructureStore
        +ensure_capacity(ds_type: DataStructureType, id: usize) void
    }
    note for DataStructureStore "Stores different types of data structures."

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File-Level Changes

Change	Details	Files
Corrected the SIMD implementation in the vector_add() function to load two different vectors instead of adding a vector to itself.	Modified the vector_add function to load values2 before popping the first four stack values. Ensured that values1 is loaded after popping the initial four values from the stack.	lessvm-solana/src/vm/core.rs
Improved memory management by increasing the default memory size and implementing a more efficient memory growth strategy.	Modified the ensure_capacity function to grow the memory by 50% instead of doubling. Increased the initial memory allocation size.	lessvm-solana/src/vm/memory.rs
Implemented missing opcodes for Graph, OHLCV, and Hypergraph operations, along with proper DataStructureStore management.	Added opcodes for GetBalance, GetOwner, IsWritable, IsSigner, and Revert. Implemented opcodes for graph operations: GraphAddEdge, GraphGetNode, GraphSetNode, GraphGetNeighbors, GraphBfs, and GraphClear. Implemented opcodes for OHLCV operations: OhlcvAddBar, OhlcvGetBar, and OhlcvSma. Implemented opcodes for hypergraph operations: HyperAddNode, HyperAddEdge, and HyperAddNodeToEdge. Added a DataStructureStore struct to manage BTreeMaps, Tries, Graphs, OHLCVs and Hypergraphs. Implemented ensure_capacity for the DataStructureStore to resize the vectors that store the data structures. Added a constant MAX_DATA_STRUCTURES to define the maximum number of data structures that can be created.	lessvm-solana/src/vm/core.rs lessvm-solana/src/vm/data_structures.rs

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[sourcery-ai]

We have skipped reviewing this pull request. It seems to have been created by a bot (hey, agentfarmx[bot]!). We assume it knows what it's doing!

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[0xrinegade]

add tests, docs and diagrams from #5 (comment)

[agentfarmx]

🧪 Added tests and documentation for LessVM improvements

This PR adds comprehensive test coverage and detailed documentation for the recent SIMD vector addition fix, improved memory growth strategy, and new opcode implementations:

• Tests: Added test modules for vector_add, data structure store operations, complex opcodes, and memory management
• Documentation: Created implementation_details.md with Mermaid diagrams explaining the internal workings and flow
• Organization: Updated module declarations for proper test integration

These additions ensure the codebase is well-tested and properly documented for future development. Please review the test coverage and documentation accuracy.