Get Upstream Stuff

.github/CODEOWNERS

@@ -1 +1,2 @@
-* @microsoft/hlsl-release
+# Uncomment the next line in release branches after ask-mode begins
+# * @microsoft/hlsl-release

.github/workflows/clang-format-checker.yml

@@ -13,16 +13,23 @@ jobs:
       pull-requests: write
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          fetch-depth: 2
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Checkout through merge base
+        uses: rmacklin/fetch-through-merge-base@bfe4d03a86f9afa52bc1a70e9814fc92a07f7b75 # v0.3.0
+        with:
+          base_ref: ${{ github.event.pull_request.base.ref }}
+          head_ref: ${{ github.event.pull_request.head.sha }}
+          deepen_length: 500
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@v41
+        uses: step-security/changed-files@3dbe17c78367e7d60f00d78ae6781a35be47b4a1 # v45.0.1
         with:
           separator: ","
-          fetch_depth: 100 # Fetches only the last 10 commits
+          skip_initial_fetch: true
 
       - name: "Listed files"
         env:

.github/workflows/coverage-gh-pages.yml

@@ -26,11 +26,11 @@ jobs:
     timeout-minutes: 240
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: true
       - name: Setup Pages
-        uses: actions/configure-pages@v2
+        uses: actions/configure-pages@v5
       - name: Install dependencies
         run: sudo apt install -y ninja-build
       - name: Configure
@@ -44,7 +44,7 @@ jobs:
       - name: Force artifact permissions
         run: chmod -c -R +rX ${{github.workspace}}/build/report
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           path: ${{github.workspace}}/build/report
 
@@ -60,4 +60,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4

CMakeLists.txt

@@ -17,15 +17,6 @@ if(POLICY CMP0022)
   cmake_policy(SET CMP0022 NEW) # automatic when 2.8.12 is required
 endif()
 
-if (POLICY CMP0051)
-  # CMake 3.1 and higher include generator expressions of the form
-  # $<TARGETLIB:obj> in the SOURCES property.  These need to be
-  # stripped everywhere that access the SOURCES property, so we just
-  # defer to the OLD behavior of not including generator expressions
-  # in the output for now.
-  cmake_policy(SET CMP0051 OLD)
-endif()
-
 if(CMAKE_VERSION VERSION_LESS 3.1.20141117)
   set(cmake_3_2_USES_TERMINAL)
 else()
@@ -686,6 +677,8 @@ add_subdirectory(include/dxc)
 # really depend on anything else in the build it is safe.
 list(APPEND LLVM_COMMON_DEPENDS HCTGen) 
 
+add_subdirectory(utils/hct)
+
 if(EXISTS "${LLVM_MAIN_SRC_DIR}/external")
   add_subdirectory(external) # SPIRV change
 endif()
@@ -769,9 +762,7 @@ if (LLVM_INCLUDE_DOCS)
   add_subdirectory(docs)
 endif()
 
-if (LLVM_BUILD_DOCS)
-  add_hlsl_hctgen(DxilDocs OUTPUT docs/DXIL.rst CODE_TAG) # HLSL Change
-endif()
+add_hlsl_hctgen(DxilDocs OUTPUT docs/DXIL.rst CODE_TAG) # HLSL Change
 
 add_subdirectory(cmake/modules)
 

CONTRIBUTING.md

@@ -40,10 +40,32 @@ Before submitting a feature or substantial code contribution please discuss it w
 
 ### Coding guidelines
 
-The coding, style, and general engineering guidelines follow those described in the docs/CodingStandards.rst. For additional guidelines in code specific to HLSL, see the docs/HLSLChanges.rst file.
+The coding, style, and general engineering guidelines follow those described in the [LLVM Coding Standards](docs/CodingStandards.rst). For additional guidelines in code specific to HLSL, see the [HLSL Changes](docs/HLSLChanges.rst) docs.
 
 DXC has adopted a clang-format requirement for all incoming changes to C and C++ files. PRs to DXC should have the *changed code* clang formatted to the LLVM style, and leave the remaining portions of the file unchanged. This can be done using the `git-clang-format` tool or IDE driven workflows. A GitHub action will run on all PRs to validate that the change is properly formatted.
 
+#### Applying LLVM Standards
+
+All new code contributed to DXC should follow the LLVM coding standards.
+
+Note that the LLVM Coding Standards have a golden rule:
+
+> **If you are extending, enhancing, or bug fixing already implemented code, use the style that is already being used so that the source is uniform and easy to follow.**
+
+The golden rule should continue to be applied to places where DXC is self-consistent. A good example is DXC's common use of `PascalCase` instead of `camelCase` for APIs in some parts of the HLSL implementation. In any place where DXC is not self-consistent new code should follow the LLVM Coding Standard.
+
+A good secondary rule to follow is:
+
+> **When in doubt, follow LLVM.**
+
+Adopting LLVM's coding standards provides a consistent set of rules and guidelines to hold all contributions to. This allows patch authors to clearly understand the expectations placed on contributions, and allows reviewers to have a bar to measure contributions against. Aligning with LLVM by default ensures the path of least resistance for everyone.
+
+Since many of the LLVM Coding Standards are not enforced automatically we rely on code reviews to provide feedback and ensure contributions align with the expected coding standards. Since we rely on reviewers for enforcement and humans make mistakes, please keep in mind:
+
+> **Code review is a conversation.**
+
+It is completely reasonable for a patch author to question feedback and provide additional context about why something was done the way it was. Reviewers often see narrow slices in diffs rather than the full context of a file or part of the compiler, so they may not always provide perfect feedback. This is especially true with the application of the "golden rule" since it depends on understanding a wider context.
+
 ### Documenting Pull Requests
 
 Pull request descriptions should have the following format:

README.md

@@ -34,6 +34,16 @@ Development kits containing only the dxc.exe driver app, the dxcompiler.dll, and
 
 As an example of community contribution, this project can also target the [SPIR-V](https://www.khronos.org/registry/spir-v/) intermediate representation. Please see the [doc](docs/SPIR-V.rst) for how HLSL features are mapped to SPIR-V, and the [wiki](https://github.com/microsoft/DirectXShaderCompiler/wiki/SPIR%E2%80%90V-CodeGen) page for how to build, use, and contribute to the SPIR-V CodeGen.
 
+### Metal CodeGen
+
+When built from source DXC can utilize the [Metal Shader
+Converter](https://developer.apple.com/metal/shader-converter/) if it is
+available during build and configuration time. This allows DXC to generate Metal
+shader libraries directly using the `-metal` flag.
+
+Note: DXC cannot currently disassemble Metal shaders so the `-Fc` flag cannot be
+used in conjunction with the `-Fo` flag.
+
 ## Building Sources
 
 See the full documentation for [Building and testing DXC](docs/BuildingAndTestingDXC.rst) for detailed instructions.

cmake/config-ix.cmake

@@ -568,3 +568,12 @@ else()
 endif()
 
 string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}")
+
+# HLSL Change Begin - Metal IR Converter
+find_package(MetalIRConverter)
+if (METAL_IRCONVERTER_FOUND)
+  set(ENABLE_METAL_CODEGEN On)
+  message(STATUS "Enabling Metal Support")
+  add_definitions(-DENABLE_METAL_CODEGEN)
+endif()
+# HLSL Change End - Metal IR Converter

cmake/modules/FindMetalIRConverter.cmake

@@ -0,0 +1,16 @@
+find_path(METAL_IRCONVERTER_INCLUDE_DIR metal_irconverter.h
+          HINTS /usr/local/include/metal_irconverter
+          DOC "Path to metal IR converter headers"
+          )
+
+find_library(METAL_IRCONVERTER_LIB NAMES metalirconverter
+  PATH_SUFFIXES lib
+  )
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(METAL_IRCONVERTER
+                                    REQUIRED_VARS METAL_IRCONVERTER_LIB METAL_IRCONVERTER_INCLUDE_DIR)
+
+message(STATUS "Metal IR Converter Include Dir: ${METAL_IRCONVERTER_INCLUDE_DIR}")
+message(STATUS "Metal IR Converter Library: ${METAL_IRCONVERTER_LIB}")
+mark_as_advanced(METAL_IRCONVERTER_LIB METAL_IRCONVERTER_INCLUDE_DIR)