Roll DirectX Shader Compiler from ac0a538752cb to d4240bc8839a (2 revisions)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/ac0a538752cb..d4240bc8839a

2026-05-26 jbatista@microsoft.com Fix modern MSVC compilation error on experimental/filesystem (#8469)
2026-05-26 49699333+dependabot[bot]@users.noreply.github.com Bump idna from 3.7 to 3.15 in /utils/git (#8460)

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: I7d9e23eb6a105e2fd19bfd98fdeb1a07585a3edc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/311435
Commit-Queue: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 6f48da1..c2a8255 100644
--- a/DEPS
+++ b/DEPS
@@ -377,7 +377,7 @@
   },
 
   'third_party/directx-shader-compiler/src': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@ac0a538752cb38f86077ff237d30fdef12292b4e',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@d4240bc8839abad25cc98d559421d7b075dad991',
   },
 
   'third_party/directx-headers/src': {
diff --git a/third_party/directx-shader-compiler/README.chromium b/third_party/directx-shader-compiler/README.chromium
index d19091e..b1831d8 100644
--- a/third_party/directx-shader-compiler/README.chromium
+++ b/third_party/directx-shader-compiler/README.chromium
@@ -4,7 +4,7 @@
 Update Mechanism: Autoroll
 Security Critical: yes
 Version: N/A
-Revision: ac0a538752cb38f86077ff237d30fdef12292b4e
+Revision: d4240bc8839abad25cc98d559421d7b075dad991
 License: LLVM
 License File: LICENSE
 Shipped: yes
diff --git a/third_party/directx-shader-compiler/src b/third_party/directx-shader-compiler/src
index ac0a538..d4240bc 160000
--- a/third_party/directx-shader-compiler/src
+++ b/third_party/directx-shader-compiler/src
@@ -1 +1 @@
-Subproject commit ac0a538752cb38f86077ff237d30fdef12292b4e
+Subproject commit d4240bc8839abad25cc98d559421d7b075dad991