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Collect referenced modules and init them together #34

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merged 6 commits into from
Oct 6, 2024

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jackalcooper
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@jackalcooper jackalcooper commented Oct 6, 2024

Summary by CodeRabbit

  • New Features

    • Updated documentation for the charms package, including new examples for defining native functions.
    • Added new benchmark commands for list addition.
  • Bug Fixes

    • Removed unnecessary JIT initialization in various benchmark tests, simplifying setup and improving clarity.
  • Documentation

    • Enhanced README.md with detailed descriptions of package functionality and updated installation instructions.
  • Tests

    • Streamlined test cases by removing JIT initialization, focusing on core functionality.

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coderabbitai bot commented Oct 6, 2024

Walkthrough

The pull request includes updates to the README.md file, enhancing documentation for the charms package, particularly its features and installation instructions. Several benchmark files have been modified to remove initialization for JIT compilation, simplifying the setup. Changes in sorting modules (ENIFQuickSort and ENIFTimSort) involve removing the init: false option from the use Charms directive. Additionally, new functions have been introduced in the Charms and Charms.Defm modules to improve module reference tracking during compilation.

Changes

File Change Summary
README.md Updated documentation for the charms package, including functionality overview, features, and installation instructions.
bench/enif_quick_sort.ex Removed init: false from use Charms. Adjusted internal logic in partition and sort functions.
bench/enif_tim_sort.ex Removed init: false from use Charms. No other changes to the sorting logic.
bench/list_add_benchmark.exs Removed initialization and destruction of Charms.JIT.
bench/sort_benchmark.exs Removed initialization of JIT for sorting algorithms.
bench/vec_add_int_list.ex Removed init: false from use Charms. No other changes to function logic.
lib/charms.ex Modified __before_compile__ to capture referenced_modules. Added __ir__ and referenced_modules functions.
lib/charms/defm.ex Introduced referenced_modules/1 function and modified compile_definitions/1 to return a tuple with MLIR string and referenced modules.
lib/charms/jit.ex Added collect_modules/2 function for collecting referenced modules. Modified init/2 to utilize this function.
test/const_test.exs Added test case for ArgumentError with unsupported type in const macro. Removed JIT initialization.
test/defm_test.exs Removed JIT initialization lines from the quick sort test case.
test/vec_add_test.exs Removed JIT initialization from the "vec add" test case while maintaining assertions.

Possibly related PRs

  • Macro const/1 as syntax sugar to create constant op #21: The introduction of the const macro in the Charms.Defm module is related to the changes in the README.md that now includes examples of using defm, which is directly tied to the functionality of defining native functions.
  • Polish examples and update README links to them #31: The updates to the README.md to enhance the description of the defm functionality and provide specific examples for "quick sort" and "vector add" are directly related to the changes made in the main PR, which also updates documentation and examples for the charms package.

Poem

🐇 In the land of code so bright,
Changes made, all feels just right.
From quick sorts to lists we add,
JIT's gone, but we’re still glad!
With charms that compile and run,
Our coding journey's just begun! 🌟


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Actionable comments posted: 6

🧹 Outside diff range and nitpick comments (7)
README.md (1)

Line range hint 1-32: Consider updating README to reflect PR objectives

While the changes to the benchmark commands are valuable, the README doesn't seem to address the main objective of this PR: "Collect referenced modules and init them together". Consider adding a section or updating existing content to explain:

  1. What "referenced modules" means in the context of this project.
  2. How these modules are being collected.
  3. The process of initializing them together.
  4. Any benefits or changes users should expect from this new functionality.

This additional information would help users understand the recent changes to the project and how they might affect usage or performance.

lib/charms.ex (1)

32-34: LGTM! Consider adding a brief documentation comment.

The new __referenced_modules__ function is a good addition, providing access to the collected referenced modules. It's consistent with the existing __ir__ function and follows the appropriate naming convention.

Consider adding a brief documentation comment to explain the purpose of this function, similar to:

@doc """
Returns the list of referenced modules collected during compilation.
"""
def __referenced_modules__ do
  @referenced_modules
end
bench/vec_add_int_list.ex (4)

Line range hint 4-21: Consider improving error handling and addressing the TODO comment.

The load_list function looks well-implemented and efficient. However, there are two points to consider:

  1. Error Handling: The function doesn't seem to handle cases where the input list might be invalid (e.g., non-integer elements or list length not equal to 8). Consider adding input validation to improve robustness.

  2. TODO Comment: There's a TODO comment about removing a const when pointer's type can be inferred. It would be beneficial to track this and update the code when possible.

Would you like assistance in implementing input validation or tracking the TODO item?


Line range hint 23-44: Consider improving error handling and flexibility.

The add function is well-implemented and efficient, using SIMD operations. However, there are two areas for potential improvement:

  1. Error Handling: The function doesn't seem to handle cases where the input lists might be invalid (e.g., non-integer elements, list length not equal to 8, or mismatched lengths between a and b). Consider adding input validation to improve robustness.

  2. Flexibility: The function always returns a list of 8 integers. Consider making it more flexible to handle input lists of different sizes, if that's a requirement for your use case.

Would you like assistance in implementing these improvements?


Line range hint 46-50: LGTM. Consider adding a comment explaining the function's purpose.

The dummy_load_no_make function appears to be correctly implemented for its purpose, likely as a performance testing utility. It loads the input lists into SIMD vectors but doesn't perform any operations on them.

To improve code readability and maintainability, consider adding a comment explaining the purpose of this function, especially since its behavior might not be immediately obvious to other developers.


Line range hint 52-54: LGTM. Consider adding a comment explaining the function's purpose.

The dummy_return function is correctly implemented for its purpose, likely as a performance baseline or testing utility. It simply returns the first input argument without any processing.

To improve code readability and maintainability, consider adding a comment explaining the purpose of this function, especially since its behavior might not be immediately obvious to other developers.

lib/charms/defm.ex (1)

216-216: Update documentation to reflect the new return type of compile_definitions/1

Since compile_definitions/1 now returns a tuple with both the MLIR string and the list of referenced modules, it would be helpful to update the function's documentation to reflect this change. This ensures that other developers are aware of the new return structure and can handle it correctly.

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📥 Commits

Files that changed from the base of the PR and between ac333bb and 924a4cb.

📒 Files selected for processing (12)
  • README.md (1 hunks)
  • bench/enif_quick_sort.ex (1 hunks)
  • bench/enif_tim_sort.ex (1 hunks)
  • bench/list_add_benchmark.exs (0 hunks)
  • bench/sort_benchmark.exs (0 hunks)
  • bench/vec_add_int_list.ex (1 hunks)
  • lib/charms.ex (1 hunks)
  • lib/charms/defm.ex (2 hunks)
  • lib/charms/jit.ex (2 hunks)
  • test/const_test.exs (0 hunks)
  • test/defm_test.exs (0 hunks)
  • test/vec_add_test.exs (0 hunks)
💤 Files with no reviewable changes (5)
  • bench/list_add_benchmark.exs
  • bench/sort_benchmark.exs
  • test/const_test.exs
  • test/defm_test.exs
  • test/vec_add_test.exs
🔇 Additional comments (8)
README.md (1)

31-32: LGTM! Benchmark commands updated.

The changes to the benchmark commands look good. The sorting benchmark file has been renamed (from sort.exs to sort_benchmark.exs), and a new benchmark for list addition has been added. These updates improve the consistency and completeness of the benchmarking instructions.

However, I noticed that these changes don't seem to directly relate to the PR objective of "Collect referenced modules and init them together". Could you clarify how these README updates contribute to that goal?

To ensure the referenced benchmark files exist, let's run the following script:

lib/charms.ex (2)

24-26: LGTM! Changes align with PR objective.

The modifications to capture both ir and referenced_modules from Charms.Defm.compile_definitions() align well with the PR objective of collecting referenced modules. This change provides a solid foundation for exposing the referenced modules later in the module.


24-34: Verify the impact of these changes on the wider codebase.

The changes look good and align well with the PR objective. However, it's important to ensure that these modifications don't have unintended consequences on other parts of the codebase that use the Charms module.

Please run the following script to check for potential impacts:

This script will help identify any potential areas that might be affected by these changes, allowing for a more comprehensive review of the impact across the codebase.

✅ Verification successful

Impact Verified on lib/charms/jit.ex.

The changes to lib/charms.ex do not adversely affect lib/charms/jit.ex. The usage of __referenced_modules__ is limited and handled appropriately within the module.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for usages of Charms module and potential impacts of the changes.

# Test 1: Search for usages of Charms module
echo "Usages of Charms module:"
rg --type elixir "use Charms" -A 5

# Test 2: Search for any direct references to @ir or @referenced_modules
echo "\nDirect references to @ir or @referenced_modules:"
rg --type elixir "@(ir|referenced_modules)"

# Test 3: Search for usages of __ir__ function
echo "\nUsages of __ir__ function:"
rg --type elixir "__ir__"

# Test 4: Search for potential usages of the new __referenced_modules__ function
echo "\nPotential usages of __referenced_modules__ function:"
rg --type elixir "__referenced_modules__"

Length of output: 5508


Script:

#!/bin/bash
# Description: Inspect the usage of __referenced_modules__ in lib/charms/jit.ex to ensure compatibility.

# Check the implementation of __referenced_modules__ in jit.ex
echo "Inspecting __referenced_modules__ usage in lib/charms/jit.ex:"
ast-grep --lang elixir --pattern $'defmodule Charms.JIT {
  $$$
  for m <- module.__referenced_modules__() {
    $$$
  }
  $$$
}' lib/charms/jit.ex

Length of output: 797


Script:

#!/bin/bash
# Description: Search for usages of __referenced_modules__ in lib/charms/jit.ex using rg.

echo "Searching for '__referenced_modules__' in lib/charms/jit.ex:"
rg "__referenced_modules__" lib/charms/jit.ex

Length of output: 244

bench/enif_quick_sort.ex (3)

Line range hint 32-32: Explicit casting of j to i32() improves type safety.

The addition of explicit casting j to i32() is a good practice for ensuring type safety and improving code clarity. However, it would be helpful to understand why this change was necessary. Was there a specific issue or compiler warning that prompted this modification?

To better understand the context of this change, please run the following script:

#!/bin/bash
# Description: Search for similar casting patterns in the codebase
# and check for any compiler warnings or issues related to type casting.

# Search for similar casting patterns
echo "Similar casting patterns in the codebase:"
ast-grep --lang elixir --pattern '$_::i32()'

# Search for compiler warnings or issues related to type casting
echo "\nCompiler warnings or issues related to type casting:"
rg --type elixir "warning:.*cast" -C 5

Line range hint 1-95: Overall impact: Initialization behavior and type safety improvements

The changes made to this module primarily affect two areas:

  1. The initialization behavior of the Charms library (by removing init: false).
  2. Type safety in the partition function (by explicitly casting j to i32()).

While these changes don't alter the core quicksort algorithm, they may have subtle effects on the module's behavior and performance. To ensure the changes haven't introduced any regressions or unexpected side effects, please consider the following:

  1. Thoroughly test the module's initialization process and overall performance.
  2. Verify that the sorting functionality still works correctly for various input sizes and types.
  3. Check for any changes in memory usage or startup time due to the modified Charms initialization.

To assist with verifying the module's behavior, please run the following script:

#!/bin/bash
# Description: Search for test files related to ENIFQuickSort and any benchmarking code.

# Search for test files
echo "Test files related to ENIFQuickSort:"
fd -e ex | rg -l "ENIFQuickSort" | rg "test"

# Search for benchmarking code
echo "\nBenchmarking code related to ENIFQuickSort:"
fd -e ex | rg -l "ENIFQuickSort" | rg "bench"

This will help identify relevant test and benchmark files to ensure proper validation of the changes.


3-3: Verify the impact of removing init: false from the Charms directive.

The removal of init: false from use Charms might affect the initialization behavior of the Charms library. This could potentially impact the module's startup time or resource allocation. Please provide more information about why this change was made and its expected impact on the module's behavior.

To help understand the implications of this change, please run the following script:

✅ Verification successful

Further investigation needed for the removal of init: false from the Charms directive.

The previous script did not yield information regarding the init option in the use Charms directive. To better understand the impact of this change, please execute the following script:


Verified: Removal of init: false from the use Charms directive does not impact other parts of the codebase.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for other occurrences of `use Charms` in the codebase
# and check if there's any documentation about the `init` option.

# Search for other occurrences of `use Charms`
echo "Occurrences of 'use Charms' in the codebase:"
rg --type elixir "use Charms" -C 2

# Search for documentation about the `init` option
echo "\nDocumentation about the 'init' option:"
rg --type elixir "init:" -C 5 | rg -C 5 "Charms"

Length of output: 270


Script:

#!/bin/bash
# Improved search for `use Charms` directives and `init` options

# Search for all `use Charms` occurrences with their options
echo "Occurrences of 'use Charms' with options:"
rg --type elixir "use Charms\s*\("

# Search specifically for `init: true` and `init: false` within `use Charms`
echo "\nOccurrences of 'init: true' and 'init: false' with Charms:"
rg --type elixir "use Charms.*init:\s*(true|false)"

Length of output: 381

bench/enif_tim_sort.ex (1)

Line range hint 1-145: LGTM: Well-implemented, performance-oriented sorting algorithms.

The rest of the file contains well-implemented insertion sort and tim sort algorithms, along with necessary helper functions. The use of low-level operations and pointers indicates a focus on performance optimization, which is appropriate for a benchmarking module.

The code demonstrates good practices for performance-critical Elixir code:

  1. Efficient use of pointers and memory management.
  2. Appropriate use of loops and conditional statements.
  3. Clear separation of concerns between different sorting functions.

Keep in mind that this low-level, performance-oriented code might be harder to maintain. Ensure that it's well-documented and that its performance benefits justify the increased complexity.

lib/charms/defm.ex (1)

216-216: Verify all callers handle the updated return value of compile_definitions/1

The compile_definitions/1 function now returns a tuple {mlir_string, referenced_modules} instead of a single mlir_string. Ensure that all places where compile_definitions/1 is called have been updated to handle the new return value to prevent unexpected behavior.

Run the following script to identify usages of compile_definitions/1:

✅ Verification successful

All callers of compile_definitions/1 correctly handle the updated return value.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Find all usages of `compile_definitions/1` in the codebase

# Test: Search for function calls to `compile_definitions`
# Expectation: Callers should handle the tuple return value appropriately

rg --type elixir -A 2 -B 2 '\bcompile_definitions\('

Length of output: 541

bench/vec_add_int_list.ex Show resolved Hide resolved
bench/enif_tim_sort.ex Show resolved Hide resolved
lib/charms/jit.ex Outdated Show resolved Hide resolved
lib/charms/jit.ex Outdated Show resolved Hide resolved
lib/charms/defm.ex Outdated Show resolved Hide resolved
lib/charms/defm.ex Outdated Show resolved Hide resolved
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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (2)
lib/charms.ex (2)

28-32: New accessor function for IR

The __ir__ function provides a clean way to access the compiled IR. This is a good addition for internal use.

Consider adding a @spec type specification for clarity:

@spec __ir__() :: term()
def __ir__ do
  @ir
end

33-38: New accessor function for referenced modules

The referenced_modules function is a valuable addition, providing access to the collected referenced modules. Making it overridable is a good design choice, allowing for customization if needed.

Consider adding a @spec type specification for clarity:

@spec referenced_modules() :: [module()]
def referenced_modules do
  @referenced_modules
end
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 924a4cb and 9f6915f.

📒 Files selected for processing (3)
  • lib/charms.ex (1 hunks)
  • lib/charms/defm.ex (2 hunks)
  • lib/charms/jit.ex (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • lib/charms/jit.ex
🔇 Additional comments (5)
lib/charms.ex (2)

24-26: Improved separation of concerns

The changes effectively separate the ir and referenced_modules into distinct module attributes. This aligns well with the PR objective of collecting referenced modules and initializing them together. The separation allows for more flexible handling of these components in the future.


24-38: Summary: Improved handling of IR and referenced modules

The changes in this PR effectively address the objective of collecting referenced modules and initializing them together. The modifications include:

  1. Separating the IR and referenced modules into distinct module attributes.
  2. Adding accessor functions for both IR and referenced modules.
  3. Making the referenced_modules function overridable for flexibility.

These changes enhance the module's functionality and provide a cleaner interface for working with compiled definitions and their dependencies. The implementation is consistent and well-structured.

lib/charms/defm.ex (3)

156-178: LGTM! Improved implementation of referenced_modules/1

The new referenced_modules/1 function looks good. It efficiently collects referenced modules from "func.call" operations using Beaver.Walker.postwalk/3. The implementation addresses the previous concern about handling nil values for callee by using pattern matching in the with statement.

Good job on using MapSet to ensure uniqueness of the collected modules and converting it to a list at the end.


213-213: LGTM! Updated return value of compile_definitions/1

The modification to include the result of referenced_modules/1 in the return value of compile_definitions/1 is well-implemented. This change aligns with the PR objective of collecting referenced modules and initializing them together.


222-228: LGTM with a minor concern: extract_mangled_mod/1 implementation

The extract_mangled_mod/1 function correctly extracts the module name from a mangled name. However, there's a potential concern:

  • The function creates atoms dynamically using String.to_atom/1. If this function is called with user-supplied or untrusted input, it could lead to atom table exhaustion, as atoms are not garbage collected.

Consider using String.to_existing_atom/1 if you're certain the atom already exists, or implement a safeguard to limit the number of new atoms that can be created.

To ensure this function is only used with trusted input, let's check its usage:

✅ Verification successful

Dynamic atom creation in extract_mangled_mod/1 is properly scoped

The extract_mangled_mod/1 function is exclusively used within lib/charms/defm.ex, ensuring that dynamic atom creation remains controlled and does not pose a risk of atom table exhaustion.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for calls to extract_mangled_mod
rg --type elixir 'extract_mangled_mod'

Length of output: 178

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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (2)
test/macro_test.exs (2)

7-7: Improved test assertion for Charms.JIT.destroy

The addition of this assertion is a good improvement to the test case. It now explicitly checks that the destroy operation completes successfully by verifying its return value.

Consider if :ok is the only valid successful return value for destroy. If there are other possible successful return values, you might want to use a more flexible assertion. For example:

assert Charms.JIT.destroy(CallMacroMod) in [:ok, :already_destroyed]

This would allow for multiple successful outcomes, if applicable.


Line range hint 1-9: Consider adding a post-destruction verification

The test case effectively checks the term_roundtrip functions and the destroy operation. To make it more robust, consider adding an assertion to verify that the module is actually destroyed and can't be used after the destroy operation.

You could add something like this after the current assertions:

assert_raise UndefinedFunctionError, fn ->
  CallMacroMod.term_roundtrip1(100)
end

This would ensure that attempting to use the module after destruction raises an UndefinedFunctionError, confirming that the destroy operation was successful.

📜 Review details

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Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 9f6915f and 21fe0d1.

📒 Files selected for processing (4)
  • bench/sort_benchmark.exs (0 hunks)
  • test/defm_test.exs (2 hunks)
  • test/expander_test.exs (1 hunks)
  • test/macro_test.exs (1 hunks)
💤 Files with no reviewable changes (1)
  • bench/sort_benchmark.exs
🚧 Files skipped from review as they are similar to previous changes (1)
  • test/defm_test.exs
🔇 Additional comments (1)
test/expander_test.exs (1)

166-166: Improved test assertion for JIT destruction

The change from :ok = Charms.JIT.destroy(:return_this) to assert :ok = Charms.JIT.destroy(:return_this) is a good improvement. It enhances the test's clarity and error reporting without changing its functional behavior.

Benefits of this change:

  1. Explicit assertion improves the test's readability.
  2. If the destroy operation fails, the test will now provide a more informative error message, showing both the expected and actual values.
  3. This modification aligns with testing best practices, where explicit assertions are preferred over simple assignments for result validation.

@jackalcooper jackalcooper merged commit 5943fa0 into main Oct 6, 2024
1 check passed
@jackalcooper jackalcooper deleted the jit_referenced_modules_together branch October 6, 2024 05:07
@coderabbitai coderabbitai bot mentioned this pull request Dec 5, 2024
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