perf(evm): bypass virtual stack and cache InterpreterExecContext for …#419
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zoowii merged 2 commits intoDTVMStack:mainfrom Apr 2, 2026
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…interpreter mode Interpreter mode manages call depth via InterpreterExecContext::FrameStack and never emits native code, so it does not need the virtual stack's mprotect/setjmp/longjmp round-trip that was designed for JIT stack guard pages. Skip it entirely when Mode == InterpMode. Additionally, cache the InterpreterExecContext in a thread-local for top-level calls (depth == 0) to avoid re-allocating the ~33 KB EVMFrame on every callEVMInInterpMode invocation. Nested calls (CALL/CREATE re-entering via Host->call()) still create a fresh context for safety. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
⚡ Performance Regression Check Results✅ Performance Check Passed (interpreter)Performance Benchmark Results (threshold: 25%)
Summary: 194 benchmarks, 0 regressions ✅ Performance Check Passed (multipass)Performance Benchmark Results (threshold: 25%)
Summary: 194 benchmarks, 0 regressions |
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Pull request overview
This PR optimizes EVM execution in interpreter mode by removing virtual-stack overhead and reusing interpreter execution context for top-level calls to reduce per-call allocations.
Changes:
- Cache
evm::InterpreterExecContextin thread-local storage for top-level interpreter calls to avoid repeated allocation of the largeEVMFrame. - Bypass
ZEN_ENABLE_VIRTUAL_STACKhandling whenRunMode::InterpModeis active, executing directly on the physical stack. - Add explanatory comments and performance rationale for interpreter-mode behavior.
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…ization - Use RAII guard for TLCtxInUse flag to ensure exception safety - Replace raw pointer with std::unique_ptr for thread-local context - Fix misleading comment about FrameStack depth management Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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…interpreter mode
Interpreter mode manages call depth via InterpreterExecContext::FrameStack and never emits native code, so it does not need the virtual stack's mprotect/setjmp/longjmp round-trip that was designed for JIT stack guard pages. Skip it entirely when Mode == InterpMode.
Additionally, cache the InterpreterExecContext in a thread-local for top-level calls (depth == 0) to avoid re-allocating the ~33 KB EVMFrame on every callEVMInInterpMode invocation. Nested calls (CALL/CREATE re-entering via Host->call()) still create a fresh context for safety.
1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):
2. What is the scope of this PR (e.g. component or file name):
3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):
4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):
5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:
6. Release note