New Wasmi bytecode (take 2)

[Robbepop]

A new take of #1148.

Advantages

• Resolve a ton of technical dept and duplicate code/logic.
• Easily change the way Wasmi instructions are dispatched and thus also allow for tail call based dispatch.
• Simplify integration of new features such as:
  • Display impl for Instruction
  • Profiling stats for Instruction during execution

Precursors

These precursor PRs simplify the final integration of the new wasmi_ir crate.

• Simplify integration of the new wasmi_ir crate into the wasmi crate:
  • Implement re-designed call_indirect instructions in the old Wasmi translator & executor.
    • PR: Implement re-designed Wasmi call_indirect instructions #1156
  • Implement re-designed select instructions in the old Wasmi translator & executor.
    • PR: Implement re-designed Wasmi select instructions #1157
  • Implement re-designed br_table instructions in the old Wasmi translator & executor.
    • PR: Implement re-designed Wasmi br_table instructions #1158
• Rename Register[Span[Iter]] to Reg[Span[Iter]].
  • PR: rename Register[Span[Iter]] to Reg[Span[Iter]] #1160
• Remove Reg::{from_i16, to_i16} methods.
  • PR: Remove Reg::{from_i16, to_i16} methods #1161
• Prepare wasmi crate for new Instruction enum usage.
  • PR: Use named fields for some Instruction variants #1162
  • PR: Use named fields for Wasmi load instructions #1163
  • PR: Use named field for Wasmi store instructions #1164
  • PR: Use named fields for Wasmi compare instructions #1165
  • PR: Use named fields for Wasmi binary instructions #1166
  • PR: Use named fields for Wasmi unary instructions #1167
  • PR: Use named fields for instruction parameters + renamings #1171
  • PR: Use named fields for {Elem,Data}Drop instructions #1182
• Prepare wasmi crate engine sub-module structurally.
  • PR: Remove Const32<u32> usage #1168
  • PR: Move InstructionPtr into the executor sub-module #1169
  • PR: Move provider module into the translator module #1170
  • PR: Rename Wasmi bytecode index types #1172
  • PR: Refactor Wasmi translator register visitation #1178
  • PR: Refactor relink_result implementation #1179
  • PR: New reg span types & replace RegSpanIter with BoundedRegSpan #1180
  • PR: Add extension traits for wasmi_ir related types #1181
  • PR: Create index submodule in bytecode module #1183

[codecov]

Codecov Report

Attention: Patch coverage is 12.38779% with 488 lines in your changes missing coverage. Please review.

Project coverage is 78.20%. Comparing base (339566c) to head (6b52b1a).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/ir/src/immeditate.rs	0.00%	184 Missing ⚠️
crates/ir/src/primitive.rs	0.00%	105 Missing ⚠️
crates/ir/src/span.rs	30.18%	74 Missing ⚠️
crates/ir/src/sequence.rs	0.00%	51 Missing ⚠️
crates/ir/src/enum.rs	9.67%	28 Missing ⚠️
crates/ir/src/visit_regs.rs	0.00%	23 Missing ⚠️
crates/ir/src/index.rs	29.16%	17 Missing ⚠️
crates/ir/src/error.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1152      +/-   ##
==========================================
- Coverage   79.66%   78.20%   -1.47%     
==========================================
  Files         298      307       +9     
  Lines       25295    25852     +557     
==========================================
+ Hits        20151    20217      +66     
- Misses       5144     5635     +491     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Robbepop]

PR to integrate wasmi_ir into the wasmi crate is done and all tests pass locally so we are (finally) ready to merge this PR.