aboutsummaryrefslogtreecommitdiff
path: root/tools/perf/util/c++
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util/c++')
-rw-r--r--tools/perf/util/c++/Build2
-rw-r--r--tools/perf/util/c++/clang-c.h43
-rw-r--r--tools/perf/util/c++/clang-test.cpp67
-rw-r--r--tools/perf/util/c++/clang.cpp225
-rw-r--r--tools/perf/util/c++/clang.h27
5 files changed, 0 insertions, 364 deletions
diff --git a/tools/perf/util/c++/Build b/tools/perf/util/c++/Build
deleted file mode 100644
index 613ecfd76527..000000000000
--- a/tools/perf/util/c++/Build
+++ /dev/null
@@ -1,2 +0,0 @@
-perf-$(CONFIG_CLANGLLVM) += clang.o
-perf-$(CONFIG_CLANGLLVM) += clang-test.o
diff --git a/tools/perf/util/c++/clang-c.h b/tools/perf/util/c++/clang-c.h
deleted file mode 100644
index d3731a876b6c..000000000000
--- a/tools/perf/util/c++/clang-c.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef PERF_UTIL_CLANG_C_H
-#define PERF_UTIL_CLANG_C_H
-
-#include <stddef.h> /* for size_t */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef HAVE_LIBCLANGLLVM_SUPPORT
-extern void perf_clang__init(void);
-extern void perf_clang__cleanup(void);
-
-struct test_suite;
-extern int test__clang_to_IR(struct test_suite *test, int subtest);
-extern int test__clang_to_obj(struct test_suite *test, int subtest);
-
-extern int perf_clang__compile_bpf(const char *filename,
- void **p_obj_buf,
- size_t *p_obj_buf_sz);
-#else
-
-#include <errno.h>
-#include <linux/compiler.h> /* for __maybe_unused */
-
-static inline void perf_clang__init(void) { }
-static inline void perf_clang__cleanup(void) { }
-
-static inline int
-perf_clang__compile_bpf(const char *filename __maybe_unused,
- void **p_obj_buf __maybe_unused,
- size_t *p_obj_buf_sz __maybe_unused)
-{
- return -ENOTSUP;
-}
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/tools/perf/util/c++/clang-test.cpp b/tools/perf/util/c++/clang-test.cpp
deleted file mode 100644
index a4683ca53697..000000000000
--- a/tools/perf/util/c++/clang-test.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-// 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(struct test_suite *test __maybe_unused,
- int subtest __maybe_unused)
-{
- 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(struct test_suite *test __maybe_unused,
- int subtest __maybe_unused)
-{
- 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;
-}
-
-}
diff --git a/tools/perf/util/c++/clang.cpp b/tools/perf/util/c++/clang.cpp
deleted file mode 100644
index 1aad7d6d34aa..000000000000
--- a/tools/perf/util/c++/clang.cpp
+++ /dev/null
@@ -1,225 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * llvm C frontend for perf. Support dynamically compile C file
- *
- * Inspired by clang example code:
- * http://llvm.org/svn/llvm-project/cfe/trunk/examples/clang-interpreter/main.cpp
- *
- * Copyright (C) 2016 Wang Nan <wangnan0@huawei.com>
- * Copyright (C) 2016 Huawei Inc.
- */
-
-#include "clang/Basic/Version.h"
-#include "clang/CodeGen/CodeGenAction.h"
-#include "clang/Frontend/CompilerInvocation.h"
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Frontend/TextDiagnosticPrinter.h"
-#include "clang/Tooling/Tooling.h"
-#include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Option/Option.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/ManagedStatic.h"
-#if CLANG_VERSION_MAJOR >= 14
-#include "llvm/MC/TargetRegistry.h"
-#else
-#include "llvm/Support/TargetRegistry.h"
-#endif
-#include "llvm/Support/TargetSelect.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-#include <memory>
-
-#include "clang.h"
-#include "clang-c.h"
-
-namespace perf {
-
-static std::unique_ptr<llvm::LLVMContext> LLVMCtx;
-
-using namespace clang;
-
-static CompilerInvocation *
-createCompilerInvocation(llvm::opt::ArgStringList CFlags, StringRef& Path,
- DiagnosticsEngine& Diags)
-{
- llvm::opt::ArgStringList CCArgs {
- "-cc1",
- "-triple", "bpf-pc-linux",
- "-fsyntax-only",
- "-O2",
- "-nostdsysteminc",
- "-nobuiltininc",
- "-vectorize-loops",
- "-vectorize-slp",
- "-Wno-unused-value",
- "-Wno-pointer-sign",
- "-x", "c"};
-
- CCArgs.append(CFlags.begin(), CFlags.end());
- CompilerInvocation *CI = tooling::newInvocation(&Diags, CCArgs
-#if CLANG_VERSION_MAJOR >= 11
- ,/*BinaryName=*/nullptr
-#endif
- );
-
- FrontendOptions& Opts = CI->getFrontendOpts();
- Opts.Inputs.clear();
- Opts.Inputs.emplace_back(Path,
- FrontendOptions::getInputKindForExtension("c"));
- return CI;
-}
-
-static std::unique_ptr<llvm::Module>
-getModuleFromSource(llvm::opt::ArgStringList CFlags,
- StringRef Path, IntrusiveRefCntPtr<vfs::FileSystem> VFS)
-{
- CompilerInstance Clang;
- Clang.createDiagnostics();
-
-#if CLANG_VERSION_MAJOR < 9
- Clang.setVirtualFileSystem(&*VFS);
-#else
- Clang.createFileManager(&*VFS);
-#endif
-
-#if CLANG_VERSION_MAJOR < 4
- IntrusiveRefCntPtr<CompilerInvocation> CI =
- createCompilerInvocation(std::move(CFlags), Path,
- Clang.getDiagnostics());
- Clang.setInvocation(&*CI);
-#else
- std::shared_ptr<CompilerInvocation> CI(
- createCompilerInvocation(std::move(CFlags), Path,
- Clang.getDiagnostics()));
- Clang.setInvocation(CI);
-#endif
-
- std::unique_ptr<CodeGenAction> Act(new EmitLLVMOnlyAction(&*LLVMCtx));
- if (!Clang.ExecuteAction(*Act))
- return std::unique_ptr<llvm::Module>(nullptr);
-
- return Act->takeModule();
-}
-
-std::unique_ptr<llvm::Module>
-getModuleFromSource(llvm::opt::ArgStringList CFlags,
- StringRef Name, StringRef Content)
-{
- using namespace vfs;
-
- llvm::IntrusiveRefCntPtr<OverlayFileSystem> OverlayFS(
- new OverlayFileSystem(getRealFileSystem()));
- llvm::IntrusiveRefCntPtr<InMemoryFileSystem> MemFS(
- new InMemoryFileSystem(true));
-
- /*
- * pushOverlay helps setting working dir for MemFS. Must call
- * before addFile.
- */
- OverlayFS->pushOverlay(MemFS);
- MemFS->addFile(Twine(Name), 0, llvm::MemoryBuffer::getMemBuffer(Content));
-
- return getModuleFromSource(std::move(CFlags), Name, OverlayFS);
-}
-
-std::unique_ptr<llvm::Module>
-getModuleFromSource(llvm::opt::ArgStringList CFlags, StringRef Path)
-{
- IntrusiveRefCntPtr<vfs::FileSystem> VFS(vfs::getRealFileSystem());
- return getModuleFromSource(std::move(CFlags), Path, VFS);
-}
-
-std::unique_ptr<llvm::SmallVectorImpl<char>>
-getBPFObjectFromModule(llvm::Module *Module)
-{
- using namespace llvm;
-
- std::string TargetTriple("bpf-pc-linux");
- std::string Error;
- const Target* Target = TargetRegistry::lookupTarget(TargetTriple, Error);
- if (!Target) {
- llvm::errs() << Error;
- return std::unique_ptr<llvm::SmallVectorImpl<char>>(nullptr);
- }
-
- llvm::TargetOptions Opt;
- TargetMachine *TargetMachine =
- Target->createTargetMachine(TargetTriple,
- "generic", "",
- Opt, Reloc::Static);
-
- Module->setDataLayout(TargetMachine->createDataLayout());
- Module->setTargetTriple(TargetTriple);
-
- std::unique_ptr<SmallVectorImpl<char>> Buffer(new SmallVector<char, 0>());
- raw_svector_ostream ostream(*Buffer);
-
- legacy::PassManager PM;
- bool NotAdded;
- NotAdded = TargetMachine->addPassesToEmitFile(PM, ostream
-#if CLANG_VERSION_MAJOR >= 7
- , /*DwoOut=*/nullptr
-#endif
-#if CLANG_VERSION_MAJOR < 10
- , TargetMachine::CGFT_ObjectFile
-#else
- , llvm::CGFT_ObjectFile
-#endif
- );
- if (NotAdded) {
- llvm::errs() << "TargetMachine can't emit a file of this type\n";
- return std::unique_ptr<llvm::SmallVectorImpl<char>>(nullptr);
- }
- PM.run(*Module);
-
- return Buffer;
-}
-
-}
-
-extern "C" {
-void perf_clang__init(void)
-{
- perf::LLVMCtx.reset(new llvm::LLVMContext());
- LLVMInitializeBPFTargetInfo();
- LLVMInitializeBPFTarget();
- LLVMInitializeBPFTargetMC();
- LLVMInitializeBPFAsmPrinter();
-}
-
-void perf_clang__cleanup(void)
-{
- perf::LLVMCtx.reset(nullptr);
- llvm::llvm_shutdown();
-}
-
-int perf_clang__compile_bpf(const char *filename,
- void **p_obj_buf,
- size_t *p_obj_buf_sz)
-{
- using namespace perf;
-
- if (!p_obj_buf || !p_obj_buf_sz)
- return -EINVAL;
-
- llvm::opt::ArgStringList CFlags;
- auto M = getModuleFromSource(std::move(CFlags), filename);
- if (!M)
- return -EINVAL;
- auto O = getBPFObjectFromModule(&*M);
- if (!O)
- return -EINVAL;
-
- size_t size = O->size_in_bytes();
- void *buffer;
-
- buffer = malloc(size);
- if (!buffer)
- return -ENOMEM;
- memcpy(buffer, O->data(), size);
- *p_obj_buf = buffer;
- *p_obj_buf_sz = size;
- return 0;
-}
-}
diff --git a/tools/perf/util/c++/clang.h b/tools/perf/util/c++/clang.h
deleted file mode 100644
index 6ce33e22f23c..000000000000
--- a/tools/perf/util/c++/clang.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef PERF_UTIL_CLANG_H
-#define PERF_UTIL_CLANG_H
-
-#include "llvm/ADT/StringRef.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Option/Option.h"
-#include <memory>
-
-namespace perf {
-
-using namespace llvm;
-
-std::unique_ptr<Module>
-getModuleFromSource(opt::ArgStringList CFlags,
- StringRef Name, StringRef Content);
-
-std::unique_ptr<Module>
-getModuleFromSource(opt::ArgStringList CFlags,
- StringRef Path);
-
-std::unique_ptr<llvm::SmallVectorImpl<char>>
-getBPFObjectFromModule(llvm::Module *Module);
-
-}
-#endif
Powered by cgit, Gruvboxed by Blaster4385.