Merge remote-tracking branch 'llvm-trunk/main' into clang-format-comment-indentonly

* llvm-trunk/main: (5388 commits)
  [SPIR-V] Add implementation of the non-const G_BUILD_VECTOR and fix emission of the OpGroupBroadcast instruction (llvm#103050)
  [RISCV][compiler-rt] Update __init_riscv_feature_bits prototype (llvm#101472)
  [LAA] Also clear DiffChecks in LAI::reset().
  [LV] Add test for diff check creation order.
  [Flang][OpenMP][Lower] Clause lowering cleanup (llvm#103058)
  [DAG] Support saturated truncate (llvm#99418)
  [RISCV] Add scheduling model for Syntacore SCR4 and SCR5  (llvm#102909)
  [clang][Interp] Diagnose pointer subtraction on zero-size arrays (llvm#103015)
  Reland logf128 constant folding (llvm#103217)
  [DataLayout] Split StructAlignment into two fields (NFC) (llvm#103700)
  [Transforms][NFC] Remove second CodeExtractor constructor
  [IR] Cache llvm.module.flags metadata in Module
  [Analysis][NFC] Don't use BitVector for nobuiltin overrides
  [SCEV] Look through multiply in computeConstantDifference() (llvm#103051)
  [LLVM][NewPM] Add a C API for setting the PassBuilder AA pipeline. (llvm#102482)
  [libc++] <experimental/simd> Add ++/-- operators for simd reference (llvm#88091)
  [APInt] Correct backwards static_assert condition. (llvm#103641)
  [MC] Remove Darwin SDK/Version from ObjFileInfo (llvm#103025)
  [NewGVN] Prevent cyclic dependencies by ensuring Leader has min RPO number (llvm#82110)
  AtomicExpand: Add assert that atomicrmw is an xchg
  ...

Author: ichaer

.git-blame-ignore-revs

@@ -84,3 +84,12 @@ b9079baaddfed5e604fbfaa1d81a7a1c38e78c26
 
 # [libc++][NFC] Run clang-format on libcxx/include again (#95874)
 e2c2ffbe7a1b5d9e32a2ce64279475b50c4cba5b
+
+# [lldb][nfc] Deindent ProcessGDBRemote::SetThreadStopInfo by two levels
+b32931c5b32eb0d2cf37d688b34f8548c9674c19
+
+# [libc++] Various consistency fixes to the CSV files that we use for tracking Standards Conformance
+64946fdaf9864d8279da1c30e4d7214fe13d1427
+b6262880b34629e9d7a72b5a42f315a3c9ed8139
+39c7dc7207e76e72da21cf4fedda21b5311bf62d
+e80bc777749331e9519575f416c342f7626dd14d

.github/CODEOWNERS

@@ -33,9 +33,6 @@
 /clang/www/cxx_dr_status.html @Endilll
 /clang/www/make_cxx_dr_status @Endilll
 
-clang/lib/AST/Interp/ @tbaederr
-clang/test/AST/Interp/ @tbaederr
-
 /clang/include/clang/CIR @lanza @bcardosolopes
 /clang/lib/CIR @lanza @bcardosolopes
 /clang/tools/cir-* @lanza @bcardosolopes
@@ -67,11 +64,11 @@ clang/test/AST/Interp/ @tbaederr
 /mlir/include/mlir/Dialect/Linalg @dcaballe @nicolasvasilache @rengolin
 /mlir/lib/Dialect/Linalg @dcaballe @nicolasvasilache @rengolin
 /mlir/lib/Dialect/Linalg/Transforms/DecomposeLinalgOps.cpp @MaheshRavishankar @nicolasvasilache
-/mlir/lib/Dialect/Linalg/Transforms/DropUnitDims.cpp @MaheshRavishankar @nicolasvasilache
+/mlir/lib/Dialect/Linalg/Transforms/DropUnitDims.cpp @dcaballe @MaheshRavishankar @nicolasvasilache
 /mlir/lib/Dialect/Linalg/Transforms/ElementwiseOpFusion.cpp @MaheshRavishankar @nicolasvasilache
 /mlir/lib/Dialect/Linalg/Transforms/DataLayoutPropagation.cpp @hanhanW @nicolasvasilache
-/mlir/lib/Dialect/Linalg/Transforms/Transforms.cpp @hanhanW @nicolasvasilache
-/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp @hanhanW @nicolasvasilache
+/mlir/lib/Dialect/Linalg/Transforms/Transforms.cpp @dcaballe @hanhanW @nicolasvasilache
+/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp @banach-space @dcaballe @hanhanW @nicolasvasilache
 
 # MemRef Dialect in MLIR.
 /mlir/lib/Dialect/MemRef/Transforms/EmulateNarrowType.cpp @MaheshRavishankar @nicolasvasilache
@@ -85,10 +82,11 @@ clang/test/AST/Interp/ @tbaederr
 /mlir/**/*VectorToSCF* @banach-space @dcaballe @matthias-springer @nicolasvasilache
 /mlir/**/*VectorToLLVM* @banach-space @dcaballe @nicolasvasilache
 /mlir/**/*X86Vector* @aartbik @dcaballe @nicolasvasilache
-/mlir/include/mlir/Dialect/Vector @dcaballe @nicolasvasilache
-/mlir/lib/Dialect/Vector @dcaballe @nicolasvasilache
-/mlir/lib/Dialect/Vector/Transforms/* @hanhanW @nicolasvasilache
-/mlir/lib/Dialect/Vector/Transforms/VectorEmulateNarrowType.cpp @MaheshRavishankar @nicolasvasilache
+/mlir/include/mlir/Dialect/Vector @banach-space @dcaballe @nicolasvasilache
+/mlir/include/mlir/Dialect/Vector/IR @kuhar
+/mlir/lib/Dialect/Vector @banach-space @dcaballe @nicolasvasilache
+/mlir/lib/Dialect/Vector/Transforms/* @banach-space @dcaballe @hanhanW @nicolasvasilache
+/mlir/lib/Dialect/Vector/Transforms/VectorEmulateNarrowType.cpp @banach-space @dcaballe @MaheshRavishankar @nicolasvasilache
 /mlir/**/*EmulateNarrowType* @dcaballe @hanhanW
 
 # Presburger library in MLIR
@@ -120,6 +118,9 @@ clang/test/AST/Interp/ @tbaederr
 /mlir/**/LLVMIR/**/BasicPtxBuilderInterface* @grypp
 /mlir/**/NVVM* @grypp
 
+# MLIR Index Dialect
+/mlir/**/Index* @mogball
+
 # MLIR Python Bindings
 /mlir/test/python/ @ftynse @makslevental @stellaraccident
 /mlir/python/ @ftynse @makslevental @stellaraccident
@@ -146,3 +147,6 @@ clang/test/AST/Interp/ @tbaederr
 /llvm/**/DWARFLinker/ @JDevlieghere
 /llvm/**/dsymutil/ @JDevlieghere
 /llvm/**/llvm-dwarfutil/ @JDevlieghere
+
+# libclang/Python bindings
+/clang/bindings/python @DeinAlptraum

.github/new-prs-labeler.yml

@@ -775,6 +775,29 @@ backend:AArch64:
   - clang/include/clang/Sema/SemaARM.h
   - clang/lib/Sema/SemaARM.cpp
 
+backend:Hexagon:
+  - clang/include/clang/Basic/BuiltinsHexagon*.def
+  - clang/include/clang/Sema/SemaHexagon.h
+  - clang/lib/Basic/Targets/Hexagon.*
+  - clang/lib/CodeGen/Targets/Hexagon.cpp
+  - clang/lib/Driver/ToolChains/Hexagon.*
+  - clang/lib/Sema/SemaHexagon.cpp
+  - lld/ELF/Arch/Hexagon.cpp
+  - lldb/source/Plugins/ABI/Hexagon/**
+  - lldb/source/Plugins/DynamicLoader/Hexagon-DYLD/**
+  - llvm/include/llvm/BinaryFormat/ELFRelocs/Hexagon.def
+  - llvm/include/llvm/IR/IntrinsicsHexagon*
+  - llvm/include/llvm/Support/Hexagon*
+  - llvm/lib/Support/Hexagon*
+  - llvm/lib/Target/Hexagon/**
+  - llvm/test/CodeGen/Hexagon/**
+  - llvm/test/CodeGen/*/Hexagon/**
+  - llvm/test/DebugInfo/*/Hexagon/**
+  - llvm/test/Transforms/*/Hexagon
+  - llvm/test/MC/Disassembler/Hexagon/**
+  - llvm/test/MC/Hexagon/**
+  - llvm/test/tools/llvm-objdump/ELF/Hexagon/**
+
 backend:loongarch:
   - llvm/include/llvm/IR/IntrinsicsLoongArch.td
   - llvm/test/MC/LoongArch/**
@@ -967,6 +990,13 @@ clang:openmp:
   - llvm/unittests/Frontend/OpenMP*
   - llvm/test/Transforms/OpenMP/**
 
+clang:as-a-library:
+  - clang/tools/libclang/**
+  - clang/bindings/**
+  - clang/include/clang-c/**
+  - clang/test/LibClang/**
+  - clang/unittest/libclang/**
+
 openmp:libomp:
   - any: ['openmp/**', '!openmp/libomptarget/**']
 

.github/workflows/containers/github-action-ci/stage1.Dockerfile

@@ -2,7 +2,7 @@ FROM docker.io/library/ubuntu:22.04 as base
 ENV LLVM_SYSROOT=/opt/llvm
 
 FROM base as stage1-toolchain
-ENV LLVM_VERSION=17.0.6
+ENV LLVM_VERSION=18.1.8
 
 RUN apt-get update && \
     apt-get install -y \
@@ -21,11 +21,9 @@ WORKDIR /llvm-project-llvmorg-$LLVM_VERSION
 
 COPY bootstrap.patch /
 
-# TODO(boomanaiden154): Remove the patch pulled from a LLVM PR once we bump
-# the toolchain to version 18 and the patch is in-tree.
 # TODO(boomanaiden154): Remove the bootstrap patch once we unsplit the build
 # and no longer need to explicitly build the stage2 dependencies.
-RUN curl https://github.com/llvm/llvm-project/commit/dd0356d741aefa25ece973d6cc4b55dcb73b84b4.patch | patch -p1 && cat /bootstrap.patch | patch -p1
+RUN cat /bootstrap.patch | patch -p1
 
 RUN mkdir build
 

.github/workflows/get-llvm-version/action.yml

@@ -0,0 +1,26 @@
+name: Get LLVM Version
+description: >-
+  Get the LLVM version from the llvm-project source tree.  This action assumes
+  the llvm-project sources have already been checked out into GITHUB_WORKSPACE.
+
+outputs:
+  major:
+    description: LLVM major version
+    value: ${{ steps.version.outputs.major }}
+  minor:
+    description: LLVM minor version
+    value: ${{ steps.version.outputs.minor }}
+  patch:
+    description: LLVM patch version
+    value: ${{ steps.version.outputs.patch }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: Get Version
+      shell: bash
+      id: version
+      run: |
+        for v in major minor patch; do
+          echo "$v=`llvm/utils/release/get-llvm-version.sh --$v`" >> $GITHUB_OUTPUT
+        done

.github/workflows/issue-write.yml

@@ -5,6 +5,7 @@ on:
     workflows:
       - "Check code formatting"
       - "Check for private emails used in PRs"
+      - "PR Request Release Note"
     types:
       - completed
 
@@ -17,16 +18,27 @@ jobs:
     permissions:
       pull-requests: write
     if: >
-      github.event.workflow_run.event == 'pull_request'
+      github.event.workflow_run.event == 'pull_request' &&
+      (
+        github.event.workflow_run.conclusion == 'success' ||
+        github.event.workflow_run.conclusion == 'failure'
+      )
     steps:
+      - name: Fetch Sources
+        uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            .github/workflows/unprivileged-download-artifact/action.yml
+          sparse-checkout-cone-mode: false
       - name: 'Download artifact'
-        uses: actions/download-artifact@6b208ae046db98c579e8a3aa621ab581ff575935 # v4.1.1
+        uses: ./.github/workflows/unprivileged-download-artifact
+        id: download-artifact
         with:
-          github-token: ${{ secrets.ISSUE_WRITE_DOWNLOAD_ARTIFACT }}
           run-id: ${{ github.event.workflow_run.id }}
-          name: workflow-args
+          artifact-name: workflow-args
 
       - name: 'Comment on PR'
+        if: steps.download-artifact.outputs.artifact-id != ''
         uses: actions/github-script@v3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -92,7 +104,11 @@ jobs:
 
             var pr_number = 0;
             gql_result.repository.ref.associatedPullRequests.nodes.forEach((pr) => {
-              if (pr.baseRepository.owner.login = context.repo.owner && pr.state == 'OPEN') {
+
+              // The largest PR number is the one we care about.  The only way
+              // to have more than one associated pull requests is if all the
+              // old pull requests are in the closed state.
+              if (pr.baseRepository.owner.login = context.repo.owner && pr.number > pr_number) {
                 pr_number = pr.number;
               }
             });
@@ -135,5 +151,7 @@ jobs:
             });
 
       - name: Dump comments file
-        if: always()
+        if: >-
+          always() &&
+          steps.download-artifact.outputs.artifact-id != ''
         run: cat comments

.github/workflows/libclang-abi-tests.yml

@@ -33,9 +33,9 @@ jobs:
       ABI_HEADERS: ${{ steps.vars.outputs.ABI_HEADERS }}
       ABI_LIBS: ${{ steps.vars.outputs.ABI_LIBS }}
       BASELINE_VERSION_MAJOR: ${{ steps.vars.outputs.BASELINE_VERSION_MAJOR }}
-      LLVM_VERSION_MAJOR: ${{ steps.version.outputs.LLVM_VERSION_MAJOR }}
-      LLVM_VERSION_MINOR: ${{ steps.version.outputs.LLVM_VERSION_MINOR }}
-      LLVM_VERSION_PATCH: ${{ steps.version.outputs.LLVM_VERSION_PATCH }}
+      LLVM_VERSION_MAJOR: ${{ steps.version.outputs.major }}
+      LLVM_VERSION_MINOR: ${{ steps.version.outputs.minor }}
+      LLVM_VERSION_PATCH: ${{ steps.version.outputs.patch }}
     steps:
       - name: Checkout source
         uses: actions/checkout@v4
@@ -44,14 +44,14 @@ jobs:
 
       - name: Get LLVM version
         id: version
-        uses: llvm/actions/get-llvm-version@main
+        uses: ./.github/workflows/get-llvm-version
 
       - name: Setup Variables
         id: vars
         run: |
           remote_repo='https://github.com/llvm/llvm-project'
-          if [ ${{ steps.version.outputs.LLVM_VERSION_PATCH }} -eq 0 ]; then
-            major_version=$(( ${{ steps.version.outputs.LLVM_VERSION_MAJOR }} - 1))
+          if [ ${{ steps.version.outputs.patch }} -eq 0 ]; then
+            major_version=$(( ${{ steps.version.outputs.major }} - 1))
             baseline_ref="llvmorg-$major_version.1.0"
 
             # If there is a minor release, we want to use that as the base line.
@@ -73,8 +73,8 @@ jobs:
             } >> "$GITHUB_OUTPUT"
           else
             {
-              echo "BASELINE_VERSION_MAJOR=${{ steps.version.outputs.LLVM_VERSION_MAJOR }}"
-              echo "BASELINE_REF=llvmorg-${{ steps.version.outputs.LLVM_VERSION_MAJOR }}.1.0"
+              echo "BASELINE_VERSION_MAJOR=${{ steps.version.outputs.major }}"
+              echo "BASELINE_REF=llvmorg-${{ steps.version.outputs.major }}.1.0"
               echo "ABI_HEADERS=."
               echo "ABI_LIBS=libclang.so libclang-cpp.so"
             } >> "$GITHUB_OUTPUT"

.github/workflows/libclang-python-tests.yml

@@ -22,12 +22,6 @@ on:
       - '.github/workflows/libclang-python-tests.yml'
       - '.github/workflows/llvm-project-tests.yml'
 
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
 jobs:
   check-clang-python:
     # Build libclang and then run the libclang Python binding's unit tests.

.github/workflows/libcxx-build-and-test.yaml

@@ -63,8 +63,8 @@ jobs:
         cxx: [ 'clang++-19' ]
         include:
           - config: 'generic-gcc'
-            cc: 'gcc-13'
-            cxx: 'g++-13'
+            cc: 'gcc-14'
+            cxx: 'g++-14'
     steps:
       - uses: actions/checkout@v4
       - name: ${{ matrix.config }}.${{ matrix.cxx }}
@@ -101,8 +101,8 @@ jobs:
         cxx: [ 'clang++-19' ]
         include:
           - config: 'generic-gcc-cxx11'
-            cc: 'gcc-13'
-            cxx: 'g++-13'
+            cc: 'gcc-14'
+            cxx: 'g++-14'
           - config: 'generic-cxx23'
             cc: 'clang-17'
             cxx: 'clang++-17'

.github/workflows/llvm-project-tests.yml

@@ -51,7 +51,7 @@ concurrency:
   # Cancel intermediate builds: only if it is a pull request build.
   # If the group name here is the same as the group name in the workflow that includes
   # this one, then the action will try to wait on itself and get stuck.
-  group: llvm-project-${{ github.workflow }}-${{ inputs.projects }}${{ github.ref }}
+  group: llvm-project-${{ github.workflow }}-${{ inputs.projects }}-${{ inputs.python_version }}${{ github.ref }}
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 
 jobs:
@@ -131,6 +131,7 @@ jobs:
                 -DCMAKE_BUILD_TYPE=Release \
                 -DLLVM_ENABLE_ASSERTIONS=ON \
                 -DLLDB_INCLUDE_TESTS=OFF \
+                -DLIBCLC_TARGETS_TO_BUILD="amdgcn--;amdgcn--amdhsa;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl" \
                 -DCMAKE_C_COMPILER_LAUNCHER=sccache \
                 -DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
                 $extra_cmake_args \
@@ -142,8 +143,6 @@ jobs:
         env:
           LLVM_BUILDDIR: ${{ steps.build-llvm.outputs.llvm-builddir }}
         run: |
-          # Make sure all of LLVM libraries that llvm-config needs are built.
+          # The libclc tests don't have a generated check target so all we can
+          # do is build it.
           ninja -C "$LLVM_BUILDDIR"
-          cmake -G Ninja -S libclc -B libclc-build -DLLVM_DIR="$LLVM_BUILDDIR"/lib/cmake/llvm -DLIBCLC_TARGETS_TO_BUILD="amdgcn--;amdgcn--amdhsa;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl"
-          ninja -C libclc-build
-          ninja -C libclc-build test