WebAssembly / WebAssembly/binaryen
List of missing peephole optimizations
Open
Nobody has claimed this yet.
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- WebAssembly
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Description
Is it possible doing some trivial logical simplifications for now? Or better wait souper with z3 solver for that?
like simplify from:
(func $test (export "test") (type $t0) (param $p0 i32) (result i32)
get_local $p0
i32.const 10
i32.gt_s
get_local $p0
i32.const 10
i32.eq
i32.or)
to:
(func $test (export "test") (type $t0) (param $p0 i32) (result i32)
get_local $p0
i32.const 9
i32.gt_s)
or:
(func $test (export "test") (type $t0) (param $p0 i32) (result i32)
get_local $p0
i32.const 10
i32.ge_s)
DONE:
from:
get_global $i
i32.const 0
i32.le_s
i32.eqz
if
to:
get_global $i
i32.const 0
i32.gt_s
if
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source file, test, or entry point is named. Start by reviewing the issue discussion and the existing optimization code to identify where these WAT patterns are handled, then define the supported simplifications and verify that the shown input produces the requested output.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- wasm
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100