[webkit-changes] [WebKit/WebKit] 1ea4ef: SBFX should not allow imm overflow

[Justin Michaud]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 1ea4ef8127276fd00ca43ffcb22bed162072abde
      https://github.com/WebKit/WebKit/commit/1ea4ef8127276fd00ca43ffcb22bed162072abde
  Author: Justin Michaud <justin at justinmichaud.com>
  Date:   2024-05-15 (Wed, 15 May 2024)

  Changed paths:
    A JSTests/stress/sbfx-offset-overflow.js
    M Source/JavaScriptCore/b3/B3LowerToAir.cpp

  Log Message:
  -----------
  SBFX should not allow imm overflow
https://bugs.webkit.org/show_bug.cgi?id=271491
rdar://125127373

Reviewed by Yusuke Suzuki.

These isel patterns should be a bit more careful with overflow.

* JSTests/stress/sbfx-offset-overflow.js: Added.
(foo):
* Source/JavaScriptCore/b3/B3LowerToAir.cpp:

Originally-landed-as: 272448.797 at safari-7618-branch (d7ad67d3fe10). rdar://128087738
Canonical link: https://commits.webkit.org/278819@main



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