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Fold TYP_STRUCT indirect access to promoted locals #71584

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merged 1 commit into from
Aug 23, 2022

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@SingleAccretion SingleAccretion commented Jul 2, 2022

These are mostly OBJ(ADDR(LCL_VAR)) constructions, but can also be local fields.

Broadly positive diffs with some regression due to how new forward substitutions affect various transformations. In particular, there is a regression on x86 due to more aggressive CSE that is replicated across many generated methods.

Also a nice TP win across the board.

@ghost ghost added the community-contribution Indicates that the PR has been added by a community member label Jul 2, 2022
@dotnet-issue-labeler dotnet-issue-labeler bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jul 2, 2022
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ghost commented Jul 2, 2022

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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These are mostly OBJ(ADDR(LCL_VAR)) constructions, but can also be local fields.

We're expecting broadly positive diffs with some regression due to how new forward substitutions affect various transformations.

Author: SingleAccretion
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area-CodeGen-coreclr, community-contribution

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@SingleAccretion SingleAccretion marked this pull request as ready for review July 20, 2022 13:32
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@jakobbotsch jakobbotsch added this to the 8.0.0 milestone Jul 29, 2022
@jakobbotsch jakobbotsch merged commit 2a2ebf9 into dotnet:main Aug 23, 2022
@SingleAccretion SingleAccretion deleted the LclMorph-Promotion-Structs branch August 23, 2022 13:19
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