1// SPDX-License-Identifier: GPL-2.0
 2#include "clang.h"
 3#include "clang-c.h"
 4#include "llvm/IR/Function.h"
 5#include "llvm/IR/LLVMContext.h"
 6
 7#include <util-cxx.h>
 8#include <tests/llvm.h>
 9#include <string>
10
11class perf_clang_scope {
12public:
13	explicit perf_clang_scope() {perf_clang__init();}
14	~perf_clang_scope() {perf_clang__cleanup();}
15};
16
17static std::unique_ptr<llvm::Module>
18__test__clang_to_IR(void)
19{
20	unsigned int kernel_version;
21
22	if (fetch_kernel_version(&kernel_version, NULL, 0))
23		return std::unique_ptr<llvm::Module>(nullptr);
24
25	std::string cflag_kver("-DLINUX_VERSION_CODE=" +
26				std::to_string(kernel_version));
27
28	std::unique_ptr<llvm::Module> M =
29		perf::getModuleFromSource({cflag_kver.c_str()},
30					  "perf-test.c",
31					  test_llvm__bpf_base_prog);
32	return M;
33}
34
35extern "C" {
36int test__clang_to_IR(void)
37{
38	perf_clang_scope _scope;
39
40	auto M = __test__clang_to_IR();
41	if (!M)
42		return -1;
43	for (llvm::Function& F : *M)
44		if (F.getName() == "bpf_func__SyS_epoll_pwait")
45			return 0;
46	return -1;
47}
48
49int test__clang_to_obj(void)
50{
51	perf_clang_scope _scope;
52
53	auto M = __test__clang_to_IR();
54	if (!M)
55		return -1;
56
57	auto Buffer = perf::getBPFObjectFromModule(&*M);
58	if (!Buffer)
59		return -1;
60	return 0;
61}
62
63}