Bump LDC-LLVM to v18.1.8

.cirrus.yml

@@ -202,7 +202,7 @@ install_ubuntu_prerequisites_template: &INSTALL_UBUNTU_PREREQUISITES_TEMPLATE
 environment:
   CIRRUS_CLONE_DEPTH: 50
   HOST_LDC_VERSION: 1.31.0
-  LLVM_VERSION: 18.1.6
+  LLVM_VERSION: 18.1.8
   GITHUB_TOKEN: ENCRYPTED[0955bd48c8d4e5391446fc0149d0719ad0b63df27ec9e6c180a5730a5b10dc7f28f09d1383423db158d21380ee2b022a]
 
 task:

.github/actions/1-setup/action.yml

@@ -110,7 +110,8 @@ runs:
     - name: Install D host compiler
       uses: dlang-community/setup-dlang@v1
       with:
-        compiler: ldc-latest
+        # macOS arm64: use LDC v1.39.0 using LLVM v17, as Xcode v16
+        compiler: ${{ inputs.arch == 'arm64' && 'ldc-1.39.0' || 'ldc-latest' }}
     - name: 'Posix: Clear LD_LIBRARY_PATH env variable' # don't use host druntime/Phobos .so/.dylib etc.
       if: runner.os != 'Windows'
       shell: bash

.github/workflows/main.yml

@@ -11,7 +11,7 @@ concurrency:
 
 env:
   CLANG_VERSION: 15.0.6
-  LLVM_VERSION: 18.1.6
+  LLVM_VERSION: 18.1.8
 
 jobs:
   build-native:
@@ -62,7 +62,6 @@ jobs:
               -DD_COMPILER_FLAGS="-gcc=/usr/bin/c++ -O -flto=full -defaultlib=phobos2-ldc-lto,druntime-ldc-lto -L-exported_symbol '-L__*' -L-w"
               -DEXTRA_CXXFLAGS=-flto=full
             with_pgo: true
-            llvm_version: 17.0.6 # FIXME: sporadic 'libc++abi: Pure virtual function called!' compiler crashes with LLVM 18 (see https://github.com/ldc-developers/ldc/pull/4604, https://github.com/ldc-developers/ldc/pull/4541)
 
           - job_name: Windows x64
             os: windows-2022
@@ -95,20 +94,26 @@ jobs:
         with:
           submodules: true
           fetch-depth: 50
-      - name: 'macOS 14: Switch to Xcode v14.3.1'
+      - name: 'macOS 14: Switch to Xcode 16 Beta 4'
         if: matrix.os == 'macos-14'
-        run: sudo xcode-select -switch /Applications/Xcode_14.3.1.app
+        run: sudo xcode-select -switch /Applications/Xcode_16_beta_4.app
       - name: Install prerequisites
         uses: ./.github/actions/1-setup
         with:
-          clang_version: ${{ runner.os == 'Windows' && '18.1.6' || env.CLANG_VERSION }}
+          clang_version: ${{ runner.os == 'Windows' && '18.1.8' || env.CLANG_VERSION }}
           llvm_version: ${{ matrix.llvm_version || env.LLVM_VERSION }}
           arch: ${{ matrix.arch }}
       - name: Build bootstrap LDC
+        if: matrix.os != 'macos-14'
         uses: ./.github/actions/2-build-bootstrap
         with:
           cmake_flags: ${{ matrix.bootstrap_cmake_flags }}
           arch: ${{ matrix.arch }}
+      # FIXME: on macOS arm64, LLVM 18 (from LDC) and LLVM 17 (from Xcode 16) seem incompatible,
+      #        leading to sporadic 'libc++abi: Pure virtual function called!' compiler crashes
+      - name: 'macOS 14: Use host LDC (with Xcode-compatible LLVM version) as bootstrap LDC'
+        if: matrix.os == 'macos-14'
+        run: ln -s $(dirname $(dirname $(which ldmd2))) ../bootstrap-ldc
       - name: Build LDC with PGO instrumentation & gather profile from compiling default libs
         if: matrix.with_pgo
         uses: ./.github/actions/2a-build-pgo

.github/workflows/supported_llvm_versions.yml

@@ -19,7 +19,7 @@ jobs:
             os: ubuntu-20.04
             host_dc: ldc-1.19.0
             # FIXME: no usable official package available yet
-            llvm_version: https://github.com/ldc-developers/llvm-project/releases/download/ldc-v18.1.6/llvm-18.1.6-linux-x86_64.tar.xz
+            llvm_version: https://github.com/ldc-developers/llvm-project/releases/download/ldc-v18.1.8/llvm-18.1.8-linux-x86_64.tar.xz
             cmake_flags: -DRT_SUPPORT_SANITIZERS=ON
           - job_name: macOS 14, LLVM 17, latest LDC beta
             os: macos-14

CHANGELOG.md

@@ -1,6 +1,7 @@
 # LDC master
 
 #### Big news
+- LLVM for prebuilt packages bumped to v18.1.8 (incl. macOS arm64). (#4712)
 - Android: NDK for prebuilt package bumped from r26d to r27. (#4711)
 
 #### Platform support

tests/dmd/runnable/ldc_extern_weak.d

@@ -6,7 +6,7 @@
 // REQUIRED_ARGS(osx): -L-undefined -Ldynamic_lookup
 
 // the linker on macOS-arm64 emits a warning
-// TRANSFORM_OUTPUT(osx): remove_lines("warning: -undefined dynamic_lookup may not work with chained fixups")
+// TRANSFORM_OUTPUT(osx): remove_lines("warning:.* -undefined dynamic_lookup")
 
 extern __gshared pragma(LDC_extern_weak) int nonExistent;