types: speedup error generation to improve performance

[GMHDBJD]

What problem does this PR solve?

Issue Number: close #64270

Problem Summary:

What changed and how does it work?

• change GenWithStackByArgs to FastGenByArgs

before this pr

after this pr

See toddstoffel/analytics_benchmark#5 for more details.

Check List

Tests

• Unit test
  orignal test covert it.
  

  tidb/pkg/expression/builtin_cast_test.go

  Line 112 in e2d602a

  require.Truef(t, terror.ErrorEqual(types.ErrTruncatedWrongVal, lastWarn.Err), "err %v", lastWarn.Err)

• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @GMHDBJD. Thanks for your PR.

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[Benjamin2037]

LGTM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.7785%. Comparing base (71c61b9) to head (6c1beaa).
⚠️ Report is 18 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #64271        +/-   ##
================================================
+ Coverage   72.7412%   73.7785%   +1.0373%     
================================================
  Files          1859       1862         +3     
  Lines        503989     509484      +5495     
================================================
+ Hits         366608     375890      +9282     
+ Misses       115120     111559      -3561     
+ Partials      22261      22035       -226     

Flag	Coverage Δ
integration	42.1333% <100.0000%> (?)
unit	72.9329% <100.0000%> (+0.6253%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.8700% <ø> (+0.1132%)	⬆️
parser	∅ <ø> (∅)
br	47.3216% <ø> (+0.9235%)	⬆️

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[D3Hunter]

please paste the performance test result too

[lance6716]

Seems types package mixes GenWithStackByArgs and FastGenByArgs. Maybe open an issue to totally switch to FastGenByArgs?

[GMHDBJD]

Seems types package mixes GenWithStackByArgs and FastGenByArgs. Maybe open an issue to totally switch to FastGenByArgs?

create a enhancement #64315

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, D3Hunter

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-11-04 13:23:34.34378721 +0000 UTC m=+190063.786817079: ☑️ agreed by Benjamin2037.
• 2025-11-06 09:32:51.35082028 +0000 UTC m=+349020.793850149: ☑️ agreed by D3Hunter.

[hawkingrei]

/retest

[joechenrh]

/retest

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[joechenrh]

/retest

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[GMHDBJD]

/retest

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@GMHDBJD: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #64334.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #64335.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #64336.