Roll DirectX Shader Compiler from 9c8b79b2703d to c5854cfd9a63 (2 revisions)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/9c8b79b2703d..c5854cfd9a63

2025-09-16 [email protected] Make LongVectors tests specified in code and have appropriate HLK properties set (#7758)
2025-09-16 [email protected] [bug] Execution Tests: Long Vector fix bug in compute expected values for split double (#7764)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/directx-shader-compiler-dawn
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in DirectX Shader Compiler: https://github.com/microsoft/DirectXShaderCompiler/issues/new/choose
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: [email protected]
Change-Id: Ifebd36c29bbb88bd0b011c474f40fe92724ad525
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/262137
Bot-Commit: Dawn Autoroller <[email protected]>
Commit-Queue: Dawn Autoroller <[email protected]>

Author: Dawn Autoroller

DEPS

@@ -349,7 +349,7 @@ deps = {
   },
 
   'third_party/dxc': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@9c8b79b2703d0065731022e3dd1334078867046d',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@c5854cfd9a639911d26d06c63f5bfad218f05331',
   },
 
   'third_party/dxheaders': {