LLVM16: Stub code not inserted into contracts

[ericpassmore]

After upgrading to LLVM16, cdt and related tools compile; however tests do not pass. Was able to a token transfer to compile by adding EOSIO_DISPATCH macro. See transfer example.

Therefore it seems likely that CDT is not inserting the C stub code with the apply function before compiling the contract to WASM.

[ericpassmore]

steps-5.0.txt

[ericpassmore]

llvm/lib/Transforms/EosioApply/EosioApply.cpp is not getting called for any functions. Need to correctly incorporate this transform.

Everything seems ok, from reading Doc on creating LLVM passes with Legacy Pass Manager, https://releases.llvm.org/16.0.0/docs/WritingAnLLVMPass.html

Looking at options from included steps-5.0.txt can see that clang-tool and clang-16 are calling -load. This seems correct.

"-load" "/local/eosnetworkfoundation/repos/antelope/cdt/build/bin/LLVMEosioApply.so"

[ericpassmore]

Notes on writing passes with New Pass Manager
https://sh4dy.com/2024/06/29/learning_llvm_01/
https://releases.llvm.org/16.0.0/docs/NewPassManager.html
https://stackoverflow.com/questions/54447985/how-to-automatically-register-and-load-modern-pass-in-clang/75999804#75999804

[ericpassmore]

New Pass Manager helped. Now passing 19 of 21 tests. Toolchain tests are failing.
tool_chain_tests.log

[ericpassmore]

Resolved by moving to New Pass manager library (mixin class), and explicitly adding llvmGetPassPluginInfo to EosioApply.exports and EosioSoftfloat.exports