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DFG might force a local to be double even if we store non-numeric val…#1657

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DFG might force a local to be double even if we store non-numeric val…#1657
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aoikonomopoulos:wpe-2.38-backport-dfg-might-force-a-local-to-be-double

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@aoikonomopoulos aoikonomopoulos commented May 5, 2026

…ues into it https://bugs.webkit.org/show_bug.cgi?id=263090 rdar://116397731

Reviewed by Keith Miller.

This changes fixes tallyVotesForShouldUseDoubleFormat() to set NotUsingDoubleFormat if the variable is no longer predicted to hold only doubles.

  • JSTests/stress/double-inlined-call-argument.js: Added.
  • JSTests/stress/regress-116397731.js: Added.
  • Source/JavaScriptCore/dfg/DFGVariableAccessData.cpp: (JSC::DFG::VariableAccessData::tallyVotesForShouldUseDoubleFormat):

Originally-landed-as: 267815.352@safari-7617-branch (11987a2c00bf). rdar://119597752
Canonical link: https://commits.webkit.org/272168@main

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Reviewed by NOBODY (OOPS!).

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* path/changed.ext:
(function):
(class.function):

103e56e

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✅ 🛠 wpe-238-arm32-build loading 🧪 wpe-238-arm32-layout

…ues into it https://bugs.webkit.org/show_bug.cgi?id=263090 <rdar://116397731>

Reviewed by Keith Miller.

This changes fixes tallyVotesForShouldUseDoubleFormat() to set NotUsingDoubleFormat if the variable
is no longer predicted to hold only doubles.

* JSTests/stress/double-inlined-call-argument.js: Added.
* JSTests/stress/regress-116397731.js: Added.
* Source/JavaScriptCore/dfg/DFGVariableAccessData.cpp:
(JSC::DFG::VariableAccessData::tallyVotesForShouldUseDoubleFormat):

Originally-landed-as: 267815.352@safari-7617-branch (11987a2c00bf). rdar://119597752
Canonical link: https://commits.webkit.org/272168@main
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