Roll DirectX Shader Compiler from dc85cd71e2be to 7a8c90cf4c44 (1 revision)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/dc85cd71e2be..7a8c90cf4c44

2025-08-18 cbieneman@microsoft.com [SPIRV] Preserve NaN, Inf, and signed zeros w/ -Gis (#7693)

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 bajones@google.com,webgpu-developers@google.com 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: bajones@google.com
Change-Id: Ice29f9a8ebbfcc3b20ef593c9e6d4425426bc213
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/257815
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 7dcc8b4..07c5f67 100644
--- a/DEPS
+++ b/DEPS
@@ -341,7 +341,7 @@
   },
 
   'third_party/dxc': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@dc85cd71e2be16cd1b1e91507cf78d55032d32f2',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@7a8c90cf4c4418f28c2b6d55f61421096f4c9165',
   },
 
   'third_party/dxheaders': {
diff --git a/third_party/dxc b/third_party/dxc
index dc85cd7..7a8c90c 160000
--- a/third_party/dxc
+++ b/third_party/dxc
@@ -1 +1 @@
-Subproject commit dc85cd71e2be16cd1b1e91507cf78d55032d32f2
+Subproject commit 7a8c90cf4c4418f28c2b6d55f61421096f4c9165