Merge remote-tracking branch 'upstream/main' into vinay-issue-119281-wextra

Author: vinay-deshmukh

.ci/compute_projects.py

@@ -52,9 +52,6 @@
     "clang": {"clang-tools-extra", "compiler-rt", "cross-project-tests"},
     "clang-tools-extra": {"libc"},
     "mlir": {"flang"},
-    # Test everything if ci scripts are changed.
-    # FIXME: Figure out what is missing and add here.
-    ".ci": {"llvm", "clang", "lld", "lldb"},
 }
 
 DEPENDENT_RUNTIMES_TO_TEST = {"clang": {"libcxx", "libcxxabi", "libunwind"}}
@@ -133,11 +130,12 @@ def _add_dependencies(projects: Set[str]) -> Set[str]:
 def _compute_projects_to_test(modified_projects: Set[str], platform: str) -> Set[str]:
     projects_to_test = set()
     for modified_project in modified_projects:
+        # Skip all projects where we cannot run tests.
+        if modified_project not in PROJECT_CHECK_TARGETS:
+            continue
         if modified_project in RUNTIMES:
             continue
-        # Skip all projects where we cannot run tests.
-        if modified_project in PROJECT_CHECK_TARGETS:
-            projects_to_test.add(modified_project)
+        projects_to_test.add(modified_project)
         if modified_project not in DEPENDENTS_TO_TEST:
             continue
         for dependent_project in DEPENDENTS_TO_TEST[modified_project]:

.ci/compute_projects_test.py

@@ -188,19 +188,6 @@ def test_exclude_gn(self):
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
 
-     def test_ci(self):
-        env_variables = compute_projects.get_env_variables(
-            [".ci/compute_projects.py"], "Linux"
-        )
-        self.assertEqual(env_variables["projects_to_build"],
-                         "clang;lld;llvm;lldb")
-        self.assertEqual(env_variables["project_check_targets"], "check-clang
-                         check-lld check-llvm check-lldb")
-        self.assertEqual(env_variables["runtimes_to_build"],
-                         "libcxx;libcxxabi;libunwind")
-        self.assertEqual(env_variables["runtimes_check_targets"], "check-cxx
-                         check-cxxabi check-unwind")
-
 
 if __name__ == "__main__":
     unittest.main()

.ci/monolithic-linux.sh

@@ -18,6 +18,7 @@ set -o pipefail
 
 MONOREPO_ROOT="${MONOREPO_ROOT:="$(git rev-parse --show-toplevel)"}"
 BUILD_DIR="${BUILD_DIR:=${MONOREPO_ROOT}/build}"
+INSTALL_DIR="${BUILD_DIR}/install"
 rm -rf "${BUILD_DIR}"
 
 ccache --zero-stats
@@ -27,14 +28,10 @@ if [[ -n "${CLEAR_CACHE:-}" ]]; then
   ccache --clear
 fi
 
-mkdir -p artifacts/reproducers
-
-# Make sure any clang reproducers will end up as artifacts.
-export CLANG_CRASH_DIAGNOSTICS_DIR=`realpath artifacts/reproducers`
-
 function at-exit {
   retcode=$?
 
+  mkdir -p artifacts
   ccache --print-stats > artifacts/ccache_stats.txt
   cp "${BUILD_DIR}"/.ninja_log artifacts/.ninja_log
 
@@ -53,28 +50,17 @@ trap at-exit EXIT
 
 projects="${1}"
 targets="${2}"
-runtimes="${3}"
 
 lit_args="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests"
 
 echo "--- cmake"
-
 export PIP_BREAK_SYSTEM_PACKAGES=1
 pip install -q -r "${MONOREPO_ROOT}"/mlir/python/requirements.txt
 pip install -q -r "${MONOREPO_ROOT}"/lldb/test/requirements.txt
 pip install -q -r "${MONOREPO_ROOT}"/.ci/requirements.txt
-
-# Set the system llvm-symbolizer as preferred.
-export LLVM_SYMBOLIZER_PATH=`which llvm-symbolizer`
-[[ ! -f "${LLVM_SYMBOLIZER_PATH}" ]] && echo "llvm-symbolizer not found!"
-
-# Set up all runtimes either way. libcxx is a dependency of LLDB.
-# If it ends up being unused, not much harm.
 cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLVM_ENABLE_PROJECTS="${projects}" \
-      -D LLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \
       -G Ninja \
-      -D CMAKE_PREFIX_PATH="${HOME}/.local" \
       -D CMAKE_BUILD_TYPE=Release \
       -D LLVM_ENABLE_ASSERTIONS=ON \
       -D LLVM_BUILD_EXAMPLES=ON \
@@ -83,47 +69,69 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLVM_ENABLE_LLD=ON \
       -D CMAKE_CXX_FLAGS=-gmlt \
       -D LLVM_CCACHE_BUILD=ON \
-      -D LIBCXX_CXX_ABI=libcxxabi \
       -D MLIR_ENABLE_BINDINGS_PYTHON=ON \
-      -D LLDB_ENABLE_PYTHON=ON \
-      -D LLDB_ENFORCE_STRICT_TEST_REQUIREMENTS=ON
+      -D CMAKE_INSTALL_PREFIX="${INSTALL_DIR}"
 
 echo "--- ninja"
-
 # Targets are not escaped as they are passed as separate arguments.
 ninja -C "${BUILD_DIR}" -k 0 ${targets}
 
+runtimes="${3}"
 runtime_targets="${4}"
 
-# Run runtimes tests.
-# We don't need to do a clean separate build of runtimes, because runtimes
-# will be built against just built clang, and because LIBCXX_TEST_PARAMS
-# and LIBCXXABI_TEST_PARAMS only affect lit configuration, which successfully
-# propagates without a clean build. Other that those two variables, builds
-# are supposed to be the same.
+# Compiling runtimes with just-built Clang and running their tests
+# as an additional testing for Clang.
 if [[ "${runtimes}" != "" ]]; then
   if [[ "${runtime_targets}" == "" ]]; then
     echo "Runtimes to build are specified, but targets are not."
     exit 1
   fi
 
+  echo "--- ninja install-clang"
+
+  ninja -C ${BUILD_DIR} install-clang install-clang-resource-headers
+
+  RUNTIMES_BUILD_DIR="${MONOREPO_ROOT}/build-runtimes"
+  INSTALL_DIR="${BUILD_DIR}/install"
+  mkdir -p ${RUNTIMES_BUILD_DIR}
+
   echo "--- cmake runtimes C++26"
 
-  cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
+  rm -rf "${RUNTIMES_BUILD_DIR}"
+  cmake -S "${MONOREPO_ROOT}/runtimes" -B "${RUNTIMES_BUILD_DIR}" -GNinja \
+      -D CMAKE_C_COMPILER="${INSTALL_DIR}/bin/clang" \
+      -D CMAKE_CXX_COMPILER="${INSTALL_DIR}/bin/clang++" \
+      -D LLVM_ENABLE_RUNTIMES="${runtimes}" \
+      -D LIBCXX_CXX_ABI=libcxxabi \
+      -D CMAKE_BUILD_TYPE=RelWithDebInfo \
+      -D CMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
       -D LIBCXX_TEST_PARAMS="std=c++26" \
-      -D LIBCXXABI_TEST_PARAMS="std=c++26"
+      -D LIBCXXABI_TEST_PARAMS="std=c++26" \
+      -D LLVM_LIT_ARGS="${lit_args}"
 
   echo "--- ninja runtimes C++26"
 
-  ninja -vC "${BUILD_DIR}" ${runtime_targets}
+  ninja -vC "${RUNTIMES_BUILD_DIR}" ${runtime_targets}
 
   echo "--- cmake runtimes clang modules"
 
-  cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
+  # We don't need to do a clean build of runtimes, because LIBCXX_TEST_PARAMS
+  # and LIBCXXABI_TEST_PARAMS only affect lit configuration, which successfully
+  # propagates without a clean build. Other that those two variables, builds
+  # are supposed to be the same.
+
+  cmake -S "${MONOREPO_ROOT}/runtimes" -B "${RUNTIMES_BUILD_DIR}" -GNinja \
+      -D CMAKE_C_COMPILER="${INSTALL_DIR}/bin/clang" \
+      -D CMAKE_CXX_COMPILER="${INSTALL_DIR}/bin/clang++" \
+      -D LLVM_ENABLE_RUNTIMES="${runtimes}" \
+      -D LIBCXX_CXX_ABI=libcxxabi \
+      -D CMAKE_BUILD_TYPE=RelWithDebInfo \
+      -D CMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
       -D LIBCXX_TEST_PARAMS="enable_modules=clang" \
-      -D LIBCXXABI_TEST_PARAMS="enable_modules=clang"
+      -D LIBCXXABI_TEST_PARAMS="enable_modules=clang" \
+      -D LLVM_LIT_ARGS="${lit_args}"
 
   echo "--- ninja runtimes clang modules"
 
-  ninja -vC "${BUILD_DIR}" ${runtime_targets}
+  ninja -vC "${RUNTIMES_BUILD_DIR}" ${runtime_targets}
 fi

.clang-format-ignore

@@ -19,13 +19,13 @@ jobs:
         include:
           - os: ubuntu-24.04
             ccache-variant: sccache
-            c_compiler: clang
-            cpp_compiler: clang++
+            c_compiler: clang-20
+            cpp_compiler: clang++-20
           # TODO: remove ccache logic when https://github.com/hendrikmuhs/ccache-action/issues/279 is resolved.
           - os: ubuntu-24.04-arm
             ccache-variant: ccache
-            c_compiler: clang
-            cpp_compiler: clang++
+            c_compiler: clang-20
+            cpp_compiler: clang++-20
           # TODO: add back gcc build when it is fixed
           # - c_compiler: gcc
           #   cpp_compiler: g++
@@ -51,6 +51,9 @@ jobs:
     #   For more information, see https://wiki.debian.org/Multiarch/LibraryPathOverview
     - name: Prepare dependencies (Ubuntu)
       run: |
+        wget https://apt.llvm.org/llvm.sh
+        chmod +x llvm.sh
+        sudo ./llvm.sh 20
         sudo apt-get update
         sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-libc-dev
         sudo ln -sf /usr/include/$(uname -p)-linux-gnu/asm /usr/include/asm

.github/workflows/libc-fullbuild-tests.yml

@@ -82,7 +82,8 @@ endforeach()
 
 set(BOLT_ENABLE_RUNTIME_default OFF)
 if ((CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64"
-    OR CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm64|aarch64)$")
+    OR CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm64|aarch64)$"
+    OR CMAKE_SYSTEM_PROCESSOR STREQUAL "riscv64")
     AND (CMAKE_SYSTEM_NAME STREQUAL "Linux"
       OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
     AND (NOT CMAKE_CROSSCOMPILING))

bolt/CMakeLists.txt

@@ -123,6 +123,7 @@ static bool isSupportedRISCV(uint32_t Type) {
   case ELF::R_RISCV_LO12_S:
   case ELF::R_RISCV_64:
   case ELF::R_RISCV_TLS_GOT_HI20:
+  case ELF::R_RISCV_TLS_GD_HI20:
   case ELF::R_RISCV_TPREL_HI20:
   case ELF::R_RISCV_TPREL_ADD:
   case ELF::R_RISCV_TPREL_LO12_I:
@@ -236,6 +237,7 @@ static size_t getSizeForTypeRISCV(uint32_t Type) {
   case ELF::R_RISCV_64:
   case ELF::R_RISCV_GOT_HI20:
   case ELF::R_RISCV_TLS_GOT_HI20:
+  case ELF::R_RISCV_TLS_GD_HI20:
     // See extractValueRISCV for why this is necessary.
     return 8;
   }
@@ -491,6 +493,7 @@ static uint64_t extractValueRISCV(uint32_t Type, uint64_t Contents,
     return extractBImmRISCV(Contents);
   case ELF::R_RISCV_GOT_HI20:
   case ELF::R_RISCV_TLS_GOT_HI20:
+  case ELF::R_RISCV_TLS_GD_HI20:
     // We need to know the exact address of the GOT entry so we extract the
     // value from both the AUIPC and L[D|W]. We cannot rely on the symbol in the
     // relocation for this since it simply refers to the object that is stored
@@ -707,6 +710,7 @@ static bool isPCRelativeRISCV(uint32_t Type) {
   case ELF::R_RISCV_RVC_BRANCH:
   case ELF::R_RISCV_32_PCREL:
   case ELF::R_RISCV_TLS_GOT_HI20:
+  case ELF::R_RISCV_TLS_GD_HI20:
     return true;
   }
 }

bolt/lib/Core/Relocation.cpp

@@ -2926,12 +2926,12 @@ void RewriteInstance::handleRelocation(const SectionRef &RelocatedSection,
 
     if (BinaryData *BD = BC->getBinaryDataContainingAddress(SymbolAddress)) {
       // Note: this assertion is trying to check sanity of BinaryData objects
-      // but AArch64 has inferred and incomplete object locations coming from
-      // GOT/TLS or any other non-trivial relocation (that requires creation
-      // of sections and whose symbol address is not really what should be
-      // encoded in the instruction). So we essentially disabled this check
+      // but AArch64 and RISCV has inferred and incomplete object locations
+      // coming from GOT/TLS or any other non-trivial relocation (that requires
+      // creation of sections and whose symbol address is not really what should
+      // be encoded in the instruction). So we essentially disabled this check
       // for AArch64 and live with bogus names for objects.
-      assert((IsAArch64 || IsSectionRelocation ||
+      assert((IsAArch64 || BC->isRISCV() || IsSectionRelocation ||
               BD->nameStartsWith(SymbolName) ||
               BD->nameStartsWith("PG" + SymbolName) ||
               (BD->nameStartsWith("ANONYMOUS") &&