This issue collects a set of CLR CodeGen (JIT) inner-loop infrastructure improvements we are planning for .NET 9.

Planned for .NET 9

SuperPMI-related features

• superpmi: automated TechEmpower collection superpmi: automated TechEmpower collection #47545
• SuperPMI: Investigate MISSING data for Linux/arm collection SuperPMI: Investigate MISSING data for Linux/arm collection #80162
• SuperPMI: Improve superpmi-diffs pipeline parallelism SuperPMI: Improve superpmi-diffs pipeline parallelism #93137
• SPMI collections need to use release System.Private.Corelib SPMI collections need to use release System.Private.Corelib #60947
• Investigate including the SPMI collector as part of the core runtime Investigate including the SPMI collector as part of the core runtime #85537

Other related work that is not planned

SuperPMI-related features

• SuperPMI: add JIT memory diff measurements in per-PR pipeline runs SuperPMI: add JIT memory diff measurements in per-PR pipeline runs #95767
• Enable post back of JIT test pipeline results to triggering GitHub PR Enable post back of JIT test pipeline results to triggering GitHub PR #93138
• SPMI: Give specific context examples for tpdiff SPMI: Give specific context examples for tpdiff #85755
• SPMI: Enable replay filter by attribute or metric SPMI: Enable replay filter by attribute or metric #93140
• Add a SPMI collection for pre-AVX512 hardware Add a SPMI collection for pre-AVX512 hardware #87145

Related

.NET 7 work was tracked with #64832.
.NET 8 work was tracked with #79018.