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Support new memory instructions and native alignment #102

Merged
merged 2 commits into from
Jan 3, 2024
Merged

Support new memory instructions and native alignment #102

merged 2 commits into from
Jan 3, 2024

Commits on Dec 28, 2023

  1. Remove unused passes 

    Signed-off-by: Mikhail Sherstennikov <[email protected]>
    @shermike
    shermike committed Dec 28, 2023
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  2. Support new memory instructions and native alignment 

    All frontend fixes related to 256-bit alignment were removed.

The main components affected by the new aligment:
- Lowering: several nodes require custom lowering due to operands with unsuitable
  types(not i256).
- Stack allocation: it still uses 256-bits slots for spill/fills, but memory for
  the local data could not be aligned in 256-bits. Thus, it should be taken into
  account and properly handled by EVMStackAllocation and EVMConvertRegToStack.
- MC and Linker: now we can't treat all integers as 256-bits, therefore the MC
  emitter produces object files with more detailed description of data. Linker
  in turn supports this new description and support init data, which is not
  256-bit aligned now.

Also added ability to use `evmone` as a VM for testing. But it has a drawback:
it doesn't support precompiled contracts, so test for __evm_builtin_modpow is
disabled for a while.

Also, due to proper data size and alignment, `memset` function is working
correctly now. So it's test was enabled.

Signed-off-by: Mikhail Sherstennikov <[email protected]>
    @shermike
    shermike committed Dec 28, 2023
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