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Ran 17 Feb 2025 08:30AM UTC

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Committed 17 Feb 2025 06:24AM UTC coverage: 20.248% (-5.6%) from 25.839%

Job # #38011.1

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push

local

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web-flow

Commit Message

bpart: Track whether any binding replacement has happened in image modules (#57433)

This implements the optimization proposed in #57426 by keeping track of
whether any bindings were replaced in image modules (excluding `Main` as
facilitated by #57426). In addition, we augment serialization to keep
track of whether a method body contains any GlobalRefs that point to a
loaded (system or package) image. If both of these flags are true, we
can skip scanning the body of the method, since we know that we neither
need to add any additional backedges nor were any of the referenced
bindings invalidated. The performance impact on end-to-end load time is
small, but measurable. Overall `@time using ModelingToolkit`
consistently improves about 5% using this PR. However, I should note
that using time is still about 40% slower than 1.11. This is not
necessarily an Apples-to-Apples comparison as there were substantial
other changes on 1.12 (as well as current load-time-tunings targeting
older versions), but I wanted to put the number context.

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