Meghana Gupta fd98ce10c7 Update PassManager's function worklist for newly added SILFunctions ...

The PassManager should transform all functions in bottom up order.
This is necessary because when optimizations like inlining looks at the
callee function bodies to compute profitability, the callee functions
should have already undergone optimizations to get better profitability
estimates.

The PassManager builds its function worklist based on bottom up order
on initialization. However, newly created SILFunctions due to
specialization etc, are simply appended to the function worklist. This
can cause us to make bad inlining decisions due to inaccurate
profitability estimates. This change now updates the function worklist such
that, all the callees of the newly added SILFunction are proccessed
before it by the PassManager.

Fixes rdar://52202680

2020-05-11 19:43:22 -07:00

2.6 KiB

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