Reset assignedInterval during verifyFinalAllocation #49286
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Fix failures exposed by EHWriteThru: https://dev.azure.com/dnceng/public/_build/results?buildId=1021926&view=ms.vss-test-web.build-test-results-tab&runId=31791570&resultId=180705&paneView=dotnet-dnceng.dnceng-build-release-tasks.helix-test-information-tab https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-47307-head-ad03bd78ebf7456dbe/System.Memory.Tests/console.387c2cf0.log?sv=2019-07-07&se=2021-03-24T01%3A36%3A31Z&sr=c&sp=rl&sig=hPD%2B625ykQtQRVKnl3pCZzTEiI5hXzrqZtIPgo6Wc74%3D
Fixes errors like this: https://dev.azure.com/dnceng/public/_build/results?buildId=1024357&view=ms.vss-test-web.build-test-results-tab&runId=31848698&resultId=181011&paneView=dotnet-dnceng.dnceng-build-release-tasks.helix-test-information-tab https://helixre8s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-47307-head-2f177492e7644d448d/System.Management.Tests/console.5337e574.log?sv=2019-07-07&se=2021-03-25T09%3A27%3A01Z&sr=c&sp=rl&sig=aBfB4tstmjMyucEadkhaFxtWdog3teT32PvzPAS4Vv4%3D
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AndyAyersMS
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Mar 8, 2021
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My latest changes to EH Var for single defs exposed 2 more issues where we were not resetting the
assignedIntervalof a assigned reg:RefTypeDef, if an interval doesn't get assigned to a new register, then reset theassignedIntervalof theregRecordthat is currently assigned to that interval.RefTypeDef, if an interval got assigned to a different register than the originalassignRegof that interval and if that refposition is spilled immediately, then reset theassignedIntervalof suchregRecord.Both of the above scenarios were exposed because they were EH Vars. In
verifyFinalAllocation(), there are multiple places where we check forRefTypeDefand take action and I looked into consolidating all the logic at single place, but I was not sure if it will regress in the way we print the "Final allocation table". Hence, to honor the time, I went ahead and did the spot fixing of these 2 scenarios, but in future, will try to refactor various scenarios.Fixes errors: