diff options
Diffstat (limited to '')
-rw-r--r-- | tools/perf/util/c++/clang-test.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tools/perf/util/c++/clang-test.cpp b/tools/perf/util/c++/clang-test.cpp new file mode 100644 index 000000000..21b23605f --- /dev/null +++ b/tools/perf/util/c++/clang-test.cpp @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "clang.h" +#include "clang-c.h" +extern "C" { +#include "../util.h" +} +#include "llvm/IR/Function.h" +#include "llvm/IR/LLVMContext.h" + +#include <tests/llvm.h> +#include <string> + +class perf_clang_scope { +public: + explicit perf_clang_scope() {perf_clang__init();} + ~perf_clang_scope() {perf_clang__cleanup();} +}; + +static std::unique_ptr<llvm::Module> +__test__clang_to_IR(void) +{ + unsigned int kernel_version; + + if (fetch_kernel_version(&kernel_version, NULL, 0)) + return std::unique_ptr<llvm::Module>(nullptr); + + std::string cflag_kver("-DLINUX_VERSION_CODE=" + + std::to_string(kernel_version)); + + std::unique_ptr<llvm::Module> M = + perf::getModuleFromSource({cflag_kver.c_str()}, + "perf-test.c", + test_llvm__bpf_base_prog); + return M; +} + +extern "C" { +int test__clang_to_IR(void) +{ + perf_clang_scope _scope; + + auto M = __test__clang_to_IR(); + if (!M) + return -1; + for (llvm::Function& F : *M) + if (F.getName() == "bpf_func__SyS_epoll_pwait") + return 0; + return -1; +} + +int test__clang_to_obj(void) +{ + perf_clang_scope _scope; + + auto M = __test__clang_to_IR(); + if (!M) + return -1; + + auto Buffer = perf::getBPFObjectFromModule(&*M); + if (!Buffer) + return -1; + return 0; +} + +} |