via-ir causes abicoder v1 results mismatch

[2xic]

Description

I have a use case where I need to be able to handle both abicoder v1 and abicoder v2 inputs. Preferably I'm also able to have via-ir enabled, but that seems to cause issues.

Created a minimal reproducible and seems just enabling via-ir with abicoder is enough for it to fail. When running the attached code without via-ir it works, but once it's enabled the code reverts. See sections on how to reproduce.

standard_json_builds.zip

Environment

• Compiler version: Version: 0.8.28+commit.7893614a.Darwin.appleclang
• Target EVM version (as per compiler settings): default
• Framework/IDE (e.g. Truffle or Remix): none
• EVM execution environment / backend / blockchain client: mainnet
• Operating system: osx

Steps to Reproduce

Source code used in steps below, standard_json_builds.zip.

First verify that it works without via-ir

1. Compile the attached standard_json_no_via_ir.json.

6080604052348015600e575f5ffd5b50600436106026575f3560e01c8063c0f8940c14602a575b5f5ffd5b60408051808201825260208082525f199181019190915281516fffffffffffffffffffffffffffffffff81529151918290030190f3fea26469706673582212201116ca6874acbe2a3c87b31bf1d75b23ceede323e55407692d8d977c1c75861364736f6c634300081c0033

2. Run it an call the code method (link to playground ) and you see 00000000000000000000000000000000ffffffffffffffffffffffffffffffff will be returned

3. Now we compile it with via-ir (standard_json_with_via_ir.json)

60806004361015600d575f80fd5b5f3560e01c63c0f8940c14601f575f80fd5b346068575f3660031901126068576040810181811067ffffffffffffffff82111760545760405260208082525f199101525f80fd5b634e487b7160e01b5f52604160045260245ffd5b5f80fdfea2646970667358221220256379ce8332b74ed80d9770e158c2012529aa222388614085f1572b384b2e5f64736f6c634300081c0033

2. Run it (playground) Then it reverts :'(

[2xic]

I guess this might be related to #15142 ?

Though, I thought the cleaning of the bits was something that would happen when forcing the abiencoder v1.