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It is unnecessary (this causes no diffs). And theoretically if it did cause diffs, the morphed tree would then not match the tree being hoisted, meaning CSE wouldn't "find" it and consider it a CSE.

It is unnecessary (this causes no diffs). And theoretically if it
did cause diffs, the morphed tree would then not match the tree
being hoisted, meaning CSE wouldn't "find" it and consider it a CSE.
@ghost ghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label May 18, 2023
@ghost ghost assigned BruceForstall May 18, 2023
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ghost commented May 18, 2023

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Issue Details

It is unnecessary (this causes no diffs). And theoretically if it did cause diffs, the morphed tree would then not match the tree being hoisted, meaning CSE wouldn't "find" it and consider it a CSE.

Author: BruceForstall
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area-CodeGen-coreclr

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@BruceForstall BruceForstall requested a review from AndyAyersMS May 18, 2023 16:45
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@AndyAyersMS PTAL
cc @dotnet/jit-contrib

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No diffs on win-x64, but a couple elsewhere where we get an additional CSE. TP is a nice (small) win.

@BruceForstall BruceForstall merged commit 7a532a7 into dotnet:main May 18, 2023
@BruceForstall BruceForstall deleted the RemoveMorphFromHoisting branch May 18, 2023 19:06
@ghost ghost locked as resolved and limited conversation to collaborators Jun 18, 2023
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