LATX, opt: Skip low-value AOT generation - #422
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Track recovered and dynamically translated TB counts on serialized translation paths. In automatic mode, generate AOT on exit or before a TB flush only when dynamic TBs account for at least five percent of all observed TBs. Use plain counters to avoid unnecessary atomic operations. Count only saveable TBs, remove a TB from the counters when it is invalidated, and keep the runtime count marker out of AOT files. Add LATX_AOT_GENERATE to force generation on or off when automatic policy is not appropriate. Signed-off-by: Wenqiang Wei <weiwenqiang@mail.ustc.edu.cn>
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Motivation
Avoid spending AOT generation time and cache space on translation blocks that are unlikely to provide useful reuse.
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Validation
ninja -C build32 latx-i386ninja -C build64 latx-x86_64upstream/masterplus this commit.Scope
This PR contains one optimization commit and no local build output or test artifacts.