GlobalStructInference: Run the safe parts in open world#8020
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tlively
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Nov 4, 2025
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| ;; Non-type-based optimizations in --gsi | ||
| ;; RUN: foreach %s %t wasm-opt --gsi -all -S -o - | filecheck %s | ||
| ;; RUN: foreach %s %t wasm-opt --gsi --closed-world -all -S -o - | filecheck %s --check-prefix=CLOSD |
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Is all the output the same? If so, we don't need a new prefix here.
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Oh right, thanks. Removed.
mkustermann
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Nov 4, 2025
| } | ||
| addIfNoDWARFIssues("gsi"); | ||
| } | ||
| addIfNoDWARFIssues("gsi"); |
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dbc: Will this also be enabled in -Os (from the options.optimizeLevel >= 2) condition on line 749 it seems this is for -O2 and -O3)?
At least the part of gsi that will preform this global.get + struct.get optimization will lead to lower code size and would therefore make sense to run in -Os.
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Yes, this runs in -Os. -Os is equivalent to -O2 plus setting the shrink level to 1,
binaryen/src/tools/optimization-options.h
Line 46 in f23ae35
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We cannot infer a struct is only created in a global, but we can see
global.gets and optimize them, at least, in a non-type-based way,
even in open world.
Fixes #8016