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[JitDiff X64] [Copilot] Fix BOL anchor not writing back updated position in ... #1805

Description

@MihuBot

Job completed in 16 minutes 23 seconds (remote runner delay: 1 minute 24 seconds).
dotnet/runtime#125280
Using arguments: commands like "benchmark regex" and "regexdiff" and such. I don't see anything for that. @MihaZupan ?
Main commit: dotnet/runtime@703be08
PR commit: dotnet/runtime@96de71a

Diffs

Found 85 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 45407946
Total bytes of diff: 45408010
Total bytes of delta: 64 (0.00 % of base)
Total relative delta: 0.02
    diff is a regression.
    relative diff is a regression.


Top file regressions (bytes):
          64 : System.Text.RegularExpressions.dasm (0.01 % of base)

1 total files with Code Size differences (0 improved, 1 regressed), 259 unchanged.

Top method regressions (bytes):
          64 (2.06 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexCompiler:<EmitTryFindNextPossibleStartingPosition>g__EmitAnchors|326_0(byref):bool:this (FullOpts)

Top method regressions (percentages):
          64 (2.06 % of base) : System.Text.RegularExpressions.dasm - System.Text.RegularExpressions.RegexCompiler:<EmitTryFindNextPossibleStartingPosition>g__EmitAnchors|326_0(byref):bool:this (FullOpts)

1 total methods with Code Size differences (0 improved, 1 regressed), 284460 unchanged.

--------------------------------------------------------------------------------

Artifacts:

Activity

  1. MihuBot commented on Mar 6, 2026

    @MihuBot
    OwnerAuthor

    Top method regressions

    Note: some changes were skipped as they were too large to fit into a comment.

    Larger list of diffs: https://gist.github.com/MihuBot/1131e87026a295a22f1e29dcaea0e873

  2. MihuBot commented on Mar 6, 2026

    @MihuBot
    OwnerAuthor
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