[webkit-changes] [WebKit/WebKit] 382262: [WGSL] Atomics inside structs and arrays are not i...

[Tadeu Zagallo]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 382262ea04f7459eb316ec48c36aba3995f3b378
      https://github.com/WebKit/WebKit/commit/382262ea04f7459eb316ec48c36aba3995f3b378
  Author: Tadeu Zagallo <tzagallo at apple.com>
  Date:   2024-01-17 (Wed, 17 Jan 2024)

  Changed paths:
    M Source/WebGPU/WGSL/GlobalVariableRewriter.cpp

  Log Message:
  -----------
  [WGSL] Atomics inside structs and arrays are not initialized
https://bugs.webkit.org/show_bug.cgi?id=267594
rdar://121062530

Reviewed by Mike Wyrzykowski.

In 273065 at main we started explicitly initializing atomic variables in the workgroup
address space, but not when the atomic was nested inside a struct or array. This
patch makes it so that we traverse the types of all variables in the workgroup
space, search for nested atomics and initialize them.

* Source/WebGPU/WGSL/GlobalVariableRewriter.cpp:
(WGSL::RewriteGlobalVariables::insertLocalDefinitions):
(WGSL::RewriteGlobalVariables::initializeAtomics):
(WGSL::RewriteGlobalVariables::atomicStoreInitialValue):
(WGSL::RewriteGlobalVariables::containsAtomic):

Canonical link: https://commits.webkit.org/273133@main