Don't track current field of state machines #2979
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I tried this on my repro case and now the compilation finishes in reasonable time. Thanks! |
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Port of dotnet/linker#2979 Fixes #73048. Co-authored-by: Michal Strehovský <MichalStrehovsky@users.noreply.github.com>
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There was a performance problem where we were tracking all possible returned values throughout the method, since we were treating them the same as hoisted locals. I'm sure it's still possible to come up with testcases that show bad performance (for example assigning many arrays to a hoisted local in the same iterator), but this should at least fix the immediate issue encountered in runtime. Commit migrated from dotnet/linker@bc1f05f
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Fixes the performance issue tested in #2977.
The problem was that we were tracking all possible returned values throughout the method, since we were treating them the same as hoisted locals. I'm sure it's still possible to come up with testcases that show bad performance (for example assigning many arrays to a hoisted local in the same iterator), but this should at least fix the immediate issue encountered in runtime.