⚡ Add BOLT tools and refine SDK builds (Phase 2)

README.md

@@ -9,7 +9,8 @@ are also provided as separate assets for each supported platform to facilitate
 decompression.
 
 Windows builds support Release mode only. The Linux and macOS build scripts also
-support Debug mode. macOS builds require Apple silicon (`arm64`).
+support Debug mode. macOS builds require macOS 13.3 or newer on Apple silicon
+(`arm64`).
 
 ## Installation
 
@@ -45,3 +46,7 @@ Build scripts accept `LLVM_ENABLE_ASSERTIONS=ON` (the default) or `OFF`; release
 CI builds and tests both. Always use headers and libraries from the same
 variant. Both variants contain native static libraries and tools, with LLVM
 exception handling and RTTI disabled.
+
+Assertion-free Linux SDKs include `llvm-bolt`, `merge-fdata`, and the BOLT
+instrumentation runtime. Consumers own profiling, optimization, and validation
+of their final binaries. Keep symbols and relocations until BOLT finishes.

scripts/toolchain/linux/in-container.sh

@@ -198,14 +198,19 @@ build_mlir() {
   local mold_bin_dir="$mold_extract_dir/bin"
   export PATH="$mold_bin_dir:$PATH"
 
+  local llvm_projects=mlir
+  if [[ "${LLVM_ENABLE_ASSERTIONS:-ON}" == "OFF" ]]; then
+    llvm_projects="mlir;bolt"
+  fi
+
   log_step "CMake configure MLIR (${BUILD_TYPE})"
   cmake -S "$repo_dir/llvm" -B "$build_dir" -G Ninja \
     -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
     -DCMAKE_INSTALL_PREFIX="$mlir_install_dir" \
     -DCMAKE_C_COMPILER=gcc \
     -DCMAKE_CXX_COMPILER=g++ \
     -DLLVM_TARGETS_TO_BUILD="$HOST_TARGET" \
-    -DLLVM_ENABLE_PROJECTS=mlir \
+    -DLLVM_ENABLE_PROJECTS="$llvm_projects" \
     -DLLVM_BUILD_EXAMPLES=OFF \
     -DLLVM_INCLUDE_EXAMPLES=OFF \
     -DLLVM_BUILD_TESTS=OFF \
@@ -242,9 +247,9 @@ build_mlir() {
   fi
 
   log_step "Stripping debug symbols"
-  if [[ "$BUILD_TYPE" == "Release" ]] && command -v strip >/dev/null 2>&1; then
-    find "$mlir_install_dir/bin" -type f -executable -exec strip --strip-debug {} + 2>/dev/null || true
-    find "$llvm_lib_dir" -name "*.a" -exec strip --strip-debug {} + 2>/dev/null || true
+  if [[ "$BUILD_TYPE" == "Release" ]]; then
+    find "$mlir_install_dir/bin" -type f -executable -exec "$mlir_install_dir/bin/llvm-strip" --strip-debug {} + 2>/dev/null || true
+    find "$llvm_lib_dir" -name "*.a" -exec "$mlir_install_dir/bin/llvm-strip" --strip-debug {} + 2>/dev/null || true
   fi
   log_done
 

scripts/toolchain/linux/test-installation.sh

@@ -87,4 +87,12 @@ log_step "Running integration test binary"
 "$TEST_BUILD_DIR/hello_mlir"
 log_done
 
+if [[ "${LLVM_ENABLE_ASSERTIONS:-ON}" == "OFF" ]]; then
+  log_step "Verifying release build tools"
+  llvm-bolt --version
+  [[ -x "$TEST_MLIR_DIR/bin/merge-fdata" ]]
+  [[ -f "$TEST_MLIR_DIR/lib/libbolt_rt_instr.a" ]]
+  log_done
+fi
+
 echo "Integration test passed!"

scripts/toolchain/macos/build-mlir.sh

@@ -42,7 +42,7 @@ done
 [[ "$BUILD_TYPE" != "Release" && "$BUILD_TYPE" != "Debug" ]] && { echo "Error: build type must be Release or Debug" >&2; exit 1; }
 
 ensure_ninja "$NINJA_VERSION"
-export MACOSX_DEPLOYMENT_TARGET="11.0"
+export MACOSX_DEPLOYMENT_TARGET="13.3"
 
 ZSTD_ARCHIVE_PATH="$(resolve_abs_path "$ZSTD_ARCHIVE_PATH")"
 MLIR_ARCHIVE_PATH="$(resolve_abs_path "$MLIR_ARCHIVE_PATH")"
@@ -100,9 +100,9 @@ cmake --build "$build_dir" --target install --config "$BUILD_TYPE"
 log_done
 
 log_step "Stripping debug symbols"
-if [[ "$BUILD_TYPE" == "Release" ]] && command -v strip >/dev/null 2>&1; then
-  find "$install_dir/bin" -type f -perm -111 -exec strip -S {} + 2>/dev/null || true
-  find "$install_dir/lib" -name "*.a" -exec strip -S {} + 2>/dev/null || true
+if [[ "$BUILD_TYPE" == "Release" ]]; then
+  find "$install_dir/bin" -type f -perm -111 -exec "$install_dir/bin/llvm-strip" --strip-debug {} + 2>/dev/null || true
+  find "$install_dir/lib" -name "*.a" -exec "$install_dir/bin/llvm-strip" --strip-debug {} + 2>/dev/null || true
 fi
 log_done
 

scripts/toolchain/macos/build-zstd.sh

@@ -39,7 +39,7 @@ done
 [[ -z "${ZSTD_ARCHIVE_PATH:-}" ]] && usage
 
 ensure_ninja "$NINJA_VERSION"
-export MACOSX_DEPLOYMENT_TARGET="11.0"
+export MACOSX_DEPLOYMENT_TARGET="13.3"
 
 ZSTD_ARCHIVE_PATH="$(resolve_abs_path "$ZSTD_ARCHIVE_PATH")"
 mkdir -p "$(dirname "$ZSTD_ARCHIVE_PATH")"