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JIT: clear lvMustInit from dependent locals - #64877
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Their initialization is handled by the parent local. CLosesdotnet#64808.
ghost
commented
Feb 6, 2022
Tagging subscribers to this area: @JulieLeeMSFT Issue DetailsTheir initialization is handled by the parent local. Closes #64808.
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AndyAyersMS
commented
Feb 6, 2022
MemberAuthor
cc @dotnet/jit-contrib Cleared |
EgorBo
approved these changes
Feb 6, 2022
MemberAuthor
Runtime failures look like the current set of usual suspects. This change caused a handful of diffs which is a little surprising; I want to understand these better before merging. |
AndyAyersMS
commented
Feb 7, 2022
MemberAuthor
Looks like we were indeed double-initializing in some cases (eg linux, x64) ; Assembly listing for method BenchmarkDotNet.Parameters.ParameterExtractor:GetParameter(System.Collections.Generic.IEnumerable`1[ValueTuple`2],int):System.ValueTuple`2[__Canon,CompareOptions]...xoreax,eaxmov qword ptr [rbp-38H],raxmov qword ptr [rbp-30H],raxmov qword ptr [rbp-38H],raxmov dword ptr [rbp-30H],eax |
AndyAyersMS
commented
Feb 7, 2022
MemberAuthor
Spot checked and all the diffs are like this. |
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Their initialization is handled by the parent local.
Closes#64808.