[compiler-rt] r257972 - Introduce stats and stats_client libraries.
Peter Collingbourne via llvm-commits
llvm-commits at lists.llvm.org
Fri Jan 15 16:31:30 PST 2016
Author: pcc
Date: Fri Jan 15 18:31:29 2016
New Revision: 257972
URL: http://llvm.org/viewvc/llvm-project?rev=257972&view=rev
Log:
Introduce stats and stats_client libraries.
This is part of a new statistics gathering feature for the sanitizers.
See clang/docs/SanitizerStats.rst for further info and docs.
Differential Revision: http://reviews.llvm.org/D16176
Added:
compiler-rt/trunk/lib/stats/
compiler-rt/trunk/lib/stats/CMakeLists.txt
compiler-rt/trunk/lib/stats/stats.cc
compiler-rt/trunk/lib/stats/stats.h
compiler-rt/trunk/lib/stats/stats_client.cc
compiler-rt/trunk/test/cfi/cross-dso/stats.cpp
compiler-rt/trunk/test/cfi/stats.cpp
Modified:
compiler-rt/trunk/lib/CMakeLists.txt
compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h
compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.cc
compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.h
compiler-rt/trunk/lib/sanitizer_common/sanitizer_internal_defs.h
compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer.h
compiler-rt/trunk/test/cfi/CMakeLists.txt
Modified: compiler-rt/trunk/lib/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/CMakeLists.txt?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/CMakeLists.txt (original)
+++ compiler-rt/trunk/lib/CMakeLists.txt Fri Jan 15 18:31:29 2016
@@ -15,6 +15,7 @@ if(COMPILER_RT_BUILD_SANITIZERS)
if(COMPILER_RT_HAS_SANITIZER_COMMON)
add_subdirectory(sanitizer_common)
+ add_subdirectory(stats)
add_subdirectory(lsan)
add_subdirectory(ubsan)
endif()
Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h Fri Jan 15 18:31:29 2016
@@ -522,6 +522,19 @@ class InternalMmapVectorNoCtor {
void clear() { size_ = 0; }
bool empty() const { return size() == 0; }
+ const T *begin() const {
+ return data();
+ }
+ T *begin() {
+ return data();
+ }
+ const T *end() const {
+ return data() + size();
+ }
+ T *end() {
+ return data() + size();
+ }
+
private:
void Resize(uptr new_capacity) {
CHECK_GT(new_capacity, 0);
Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.cc?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.cc Fri Jan 15 18:31:29 2016
@@ -45,17 +45,44 @@ void CommonFlags::CopyFrom(const CommonF
internal_memcpy(this, &other, sizeof(*this));
}
-// Copy the string from "s" to "out", replacing "%b" with the binary basename.
-static void SubstituteBinaryName(const char *s, char *out, uptr out_size) {
+// Copy the string from "s" to "out", making the following substitutions:
+// %b = binary basename
+// %p = pid
+void SubstituteForFlagValue(const char *s, char *out, uptr out_size) {
char *out_end = out + out_size;
while (*s && out < out_end - 1) {
- if (s[0] != '%' || s[1] != 'b') { *out++ = *s++; continue; }
- const char *base = GetProcessName();
- CHECK(base);
- while (*base && out < out_end - 1)
- *out++ = *base++;
- s += 2; // skip "%b"
+ if (s[0] != '%') {
+ *out++ = *s++;
+ continue;
+ }
+ switch (s[1]) {
+ case 'b': {
+ const char *base = GetProcessName();
+ CHECK(base);
+ while (*base && out < out_end - 1)
+ *out++ = *base++;
+ s += 2; // skip "%b"
+ break;
+ }
+ case 'p': {
+ int pid = internal_getpid();
+ char buf[32];
+ char *buf_pos = buf + 32;
+ do {
+ *--buf_pos = (pid % 10) + '0';
+ pid /= 10;
+ } while (pid);
+ while (buf_pos < buf + 32 && out < out_end - 1)
+ *out++ = *buf_pos++;
+ s += 2; // skip "%p"
+ break;
+ }
+ default:
+ *out++ = *s++;
+ break;
+ }
}
+ CHECK(out < out_end - 1);
*out = '\0';
}
@@ -69,7 +96,7 @@ class FlagHandlerInclude : public FlagHa
bool Parse(const char *value) final {
if (internal_strchr(value, '%')) {
char *buf = (char *)MmapOrDie(kMaxPathLength, "FlagHandlerInclude");
- SubstituteBinaryName(value, buf, kMaxPathLength);
+ SubstituteForFlagValue(value, buf, kMaxPathLength);
bool res = parser_->ParseFile(buf, ignore_missing_);
UnmapOrDie(buf, kMaxPathLength);
return res;
Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.h?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.h (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_flags.h Fri Jan 15 18:31:29 2016
@@ -46,6 +46,8 @@ inline void OverrideCommonFlags(const Co
common_flags_dont_use.CopyFrom(cf);
}
+void SubstituteForFlagValue(const char *s, char *out, uptr out_size);
+
class FlagParser;
void RegisterCommonFlags(FlagParser *parser,
CommonFlags *cf = &common_flags_dont_use);
Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_internal_defs.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_internal_defs.h?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_internal_defs.h (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_internal_defs.h Fri Jan 15 18:31:29 2016
@@ -107,10 +107,8 @@ typedef uptr operator_new_size_type;
#else
typedef u32 operator_new_size_type;
#endif
-} // namespace __sanitizer
-using namespace __sanitizer; // NOLINT
// ----------- ATTENTION -------------
// This header should NOT include any other headers to avoid portability issues.
@@ -188,14 +186,12 @@ typedef void* thread_return_t;
typedef thread_return_t (THREAD_CALLING_CONV *thread_callback_t)(void* arg);
// NOTE: Functions below must be defined in each run-time.
-namespace __sanitizer {
void NORETURN Die();
// FIXME: No, this shouldn't be in the sanitizer interface.
SANITIZER_INTERFACE_ATTRIBUTE
void NORETURN CheckFailed(const char *file, int line, const char *cond,
u64 v1, u64 v2);
-} // namespace __sanitizer
// Check macro
#define RAW_CHECK_MSG(expr, msg) do { \
@@ -287,6 +283,9 @@ enum LinkerInitialized { LINKER_INITIALI
#if !defined(_MSC_VER) || defined(__clang__)
# define GET_CALLER_PC() (uptr)__builtin_return_address(0)
# define GET_CURRENT_FRAME() (uptr)__builtin_frame_address(0)
+inline void Trap() {
+ __builtin_trap();
+}
#else
extern "C" void* _ReturnAddress(void);
# pragma intrinsic(_ReturnAddress)
@@ -295,6 +294,12 @@ extern "C" void* _ReturnAddress(void);
// FIXME: This macro is still used when printing error reports though it's not
// clear if the BP value is needed in the ASan reports on Windows.
# define GET_CURRENT_FRAME() (uptr)0xDEADBEEF
+
+extern "C" void __ud2(void);
+# pragma intrinsic(__ud2)
+inline void Trap() {
+ __ud2();
+}
#endif
#define HANDLE_EINTR(res, f) \
@@ -313,4 +318,8 @@ extern "C" void* _ReturnAddress(void);
(void)enable_fp; \
} while (0)
+} // namespace __sanitizer
+
+using namespace __sanitizer; // NOLINT
+
#endif // SANITIZER_DEFS_H
Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer.h?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer.h (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer.h Fri Jan 15 18:31:29 2016
@@ -113,6 +113,8 @@ class Symbolizer final {
void AddHooks(StartSymbolizationHook start_hook,
EndSymbolizationHook end_hook);
+ LoadedModule *FindModuleForAddress(uptr address);
+
private:
// GetModuleNameAndOffsetForPC has to return a string to the caller.
// Since the corresponding module might get unloaded later, we should create
@@ -139,7 +141,6 @@ class Symbolizer final {
bool FindModuleNameAndOffsetForAddress(uptr address, const char **module_name,
uptr *module_offset);
- LoadedModule *FindModuleForAddress(uptr address);
LoadedModule modules_[kMaxNumberOfModules];
uptr n_modules_;
// If stale, need to reload the modules before looking up addresses.
Added: compiler-rt/trunk/lib/stats/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/stats/CMakeLists.txt?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/lib/stats/CMakeLists.txt (added)
+++ compiler-rt/trunk/lib/stats/CMakeLists.txt Fri Jan 15 18:31:29 2016
@@ -0,0 +1,27 @@
+include_directories(..)
+
+add_custom_target(stats)
+
+if(APPLE)
+ set(STATS_LIB_FLAVOR SHARED)
+else()
+ set(STATS_LIB_FLAVOR STATIC)
+endif()
+
+add_compiler_rt_runtime(clang_rt.stats
+ ${STATS_LIB_FLAVOR}
+ ARCHS ${SANITIZER_COMMON_SUPPORTED_ARCH}
+ OS ${SANITIZER_COMMON_SUPPORTED_OS}
+ SOURCES stats.cc
+ OBJECT_LIBS RTSanitizerCommon
+ RTSanitizerCommonLibc
+ CFLAGS ${SANITIZER_COMMON_CFLAGS}
+ PARENT_TARGET stats)
+
+add_compiler_rt_runtime(clang_rt.stats_client
+ STATIC
+ ARCHS ${SANITIZER_COMMON_SUPPORTED_ARCH}
+ OS ${SANITIZER_COMMON_SUPPORTED_OS}
+ SOURCES stats_client.cc
+ CFLAGS ${SANITIZER_COMMON_CFLAGS}
+ PARENT_TARGET stats)
Added: compiler-rt/trunk/lib/stats/stats.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/stats/stats.cc?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/lib/stats/stats.cc (added)
+++ compiler-rt/trunk/lib/stats/stats.cc Fri Jan 15 18:31:29 2016
@@ -0,0 +1,136 @@
+//===-- stats.cc ----------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Sanitizer statistics gathering. Manages statistics for a process and is
+// responsible for writing the report file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#if SANITIZER_POSIX
+#include "sanitizer_common/sanitizer_posix.h"
+#endif
+#include "sanitizer_common/sanitizer_symbolizer.h"
+#include "stats/stats.h"
+#if SANITIZER_POSIX
+#include <signal.h>
+#endif
+
+using namespace __sanitizer;
+
+namespace {
+
+InternalMmapVectorNoCtor<StatModule **> modules;
+StaticSpinMutex modules_mutex;
+
+fd_t stats_fd;
+
+void WriteLE(fd_t fd, uptr val) {
+ char chars[sizeof(uptr)];
+ for (unsigned i = 0; i != sizeof(uptr); ++i) {
+ chars[i] = val >> (i * 8);
+ }
+ WriteToFile(fd, chars, sizeof(uptr));
+}
+
+void OpenStatsFile(const char *path_env) {
+ InternalScopedBuffer<char> path(kMaxPathLength);
+ SubstituteForFlagValue(path_env, path.data(), kMaxPathLength);
+
+ error_t err;
+ stats_fd = OpenFile(path.data(), WrOnly, &err);
+ if (stats_fd == kInvalidFd) {
+ Report("stats: failed to open %s for writing (reason: %d)\n", path.data(),
+ err);
+ return;
+ }
+ char sizeof_uptr = sizeof(uptr);
+ WriteToFile(stats_fd, &sizeof_uptr, 1);
+}
+
+void WriteModuleReport(StatModule **smodp) {
+ CHECK(smodp);
+ const char *path_env = GetEnv("SANITIZER_STATS_PATH");
+ if (!path_env || stats_fd == kInvalidFd)
+ return;
+ if (!stats_fd)
+ OpenStatsFile(path_env);
+ LoadedModule *mod = Symbolizer::GetOrInit()->FindModuleForAddress(
+ reinterpret_cast<uptr>(smodp));
+ WriteToFile(stats_fd, mod->full_name(),
+ internal_strlen(mod->full_name()) + 1);
+ for (StatModule *smod = *smodp; smod; smod = smod->next) {
+ for (u32 i = 0; i != smod->size; ++i) {
+ StatInfo *s = &smod->infos[i];
+ if (!s->addr)
+ continue;
+ WriteLE(stats_fd, s->addr - mod->base_address());
+ WriteLE(stats_fd, s->data);
+ }
+ }
+ WriteLE(stats_fd, 0);
+ WriteLE(stats_fd, 0);
+}
+
+} // namespace
+
+extern "C"
+SANITIZER_INTERFACE_ATTRIBUTE
+unsigned __sanitizer_stats_register(StatModule **mod) {
+ SpinMutexLock l(&modules_mutex);
+ modules.push_back(mod);
+ return modules.size() - 1;
+}
+
+extern "C"
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_stats_unregister(unsigned index) {
+ SpinMutexLock l(&modules_mutex);
+ WriteModuleReport(modules[index]);
+ modules[index] = 0;
+}
+
+namespace {
+
+void WriteFullReport() {
+ SpinMutexLock l(&modules_mutex);
+ for (StatModule **mod : modules) {
+ if (!mod)
+ continue;
+ WriteModuleReport(mod);
+ }
+ if (stats_fd != 0 && stats_fd != kInvalidFd) {
+ CloseFile(stats_fd);
+ stats_fd = kInvalidFd;
+ }
+}
+
+#if SANITIZER_POSIX
+void USR2Handler(int sig) {
+ WriteFullReport();
+}
+#endif
+
+struct WriteReportOnExitOrSignal {
+ WriteReportOnExitOrSignal() {
+#if SANITIZER_POSIX
+ struct sigaction sigact;
+ internal_memset(&sigact, 0, sizeof(sigact));
+ sigact.sa_handler = USR2Handler;
+ internal_sigaction(SIGUSR2, &sigact, nullptr);
+#endif
+ }
+
+ ~WriteReportOnExitOrSignal() {
+ WriteFullReport();
+ }
+} wr;
+
+} // namespace
Added: compiler-rt/trunk/lib/stats/stats.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/stats/stats.h?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/lib/stats/stats.h (added)
+++ compiler-rt/trunk/lib/stats/stats.h Fri Jan 15 18:31:29 2016
@@ -0,0 +1,43 @@
+//===-- stats.h -------------------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Data definitions for sanitizer statistics gathering.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SANITIZER_STATS_STATS_H
+#define SANITIZER_STATS_STATS_H
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+namespace __sanitizer {
+
+// Number of bits in data that are used for the sanitizer kind. Needs to match
+// llvm::kSanitizerStatKindBits in
+// llvm/include/llvm/Transforms/Utils/SanitizerStats.h
+enum { kKindBits = 3 };
+
+struct StatInfo {
+ uptr addr;
+ uptr data;
+};
+
+struct StatModule {
+ StatModule *next;
+ u32 size;
+ StatInfo infos[1];
+};
+
+inline uptr CountFromData(uptr data) {
+ return data & ((1ull << (sizeof(uptr) * 8 - kKindBits)) - 1);
+}
+
+}
+
+#endif
Added: compiler-rt/trunk/lib/stats/stats_client.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/stats/stats_client.cc?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/lib/stats/stats_client.cc (added)
+++ compiler-rt/trunk/lib/stats/stats_client.cc Fri Jan 15 18:31:29 2016
@@ -0,0 +1,83 @@
+//===-- stats_client.cc ---------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Sanitizer statistics gathering. Manages statistics for a module (executable
+// or DSO) and registers statistics with the process.
+//
+// This is linked into each individual modle and cannot directly use functions
+// declared in sanitizer_common.
+//
+//===----------------------------------------------------------------------===//
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+#include <stdint.h>
+#include <stdio.h>
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "stats/stats.h"
+
+using namespace __sanitizer;
+
+namespace {
+
+void *LookupSymbolFromMain(const char *name) {
+#ifdef _WIN32
+ return reinterpret_cast<void *>(GetProcAddress(GetModuleHandle(0), name));
+#else
+ return dlsym(RTLD_DEFAULT, name);
+#endif
+}
+
+StatModule *list;
+
+struct RegisterSanStats {
+ unsigned module_id;
+
+ RegisterSanStats() {
+ typedef unsigned (*reg_func_t)(StatModule **);
+ reg_func_t reg_func = reinterpret_cast<reg_func_t>(
+ LookupSymbolFromMain("__sanitizer_stats_register"));
+ if (reg_func)
+ module_id = reg_func(&list);
+ }
+
+ ~RegisterSanStats() {
+ typedef void (*unreg_func_t)(unsigned);
+ unreg_func_t unreg_func = reinterpret_cast<unreg_func_t>(
+ LookupSymbolFromMain("__sanitizer_stats_unregister"));
+ if (unreg_func)
+ unreg_func(module_id);
+ }
+} reg;
+
+}
+
+extern "C" void __sanitizer_stat_init(StatModule *mod) {
+ mod->next = list;
+ list = mod;
+}
+
+extern "C" void __sanitizer_stat_report(StatInfo *s) {
+ s->addr = GET_CALLER_PC();
+#if defined(_WIN64) && !defined(__clang__)
+ uptr old_data = InterlockedIncrement64(reinterpret_cast<LONG64 *>(&s->data));
+#elif defined(_WIN32) && !defined(__clang__)
+ uptr old_data = InterlockedIncrement(&s->data);
+#else
+ uptr old_data = __sync_fetch_and_add(&s->data, 1);
+#endif
+
+ // Overflow check.
+ if (CountFromData(old_data + 1) == 0)
+ Trap();
+}
Modified: compiler-rt/trunk/test/cfi/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/cfi/CMakeLists.txt?rev=257972&r1=257971&r2=257972&view=diff
==============================================================================
--- compiler-rt/trunk/test/cfi/CMakeLists.txt (original)
+++ compiler-rt/trunk/test/cfi/CMakeLists.txt Fri Jan 15 18:31:29 2016
@@ -8,6 +8,8 @@ if(NOT COMPILER_RT_STANDALONE_BUILD)
list(APPEND CFI_TEST_DEPS
opt
ubsan
+ stats
+ sanstats
)
if(COMPILER_RT_HAS_CFI)
list(APPEND CFI_TEST_DEPS cfi)
Added: compiler-rt/trunk/test/cfi/cross-dso/stats.cpp
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/cfi/cross-dso/stats.cpp?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/test/cfi/cross-dso/stats.cpp (added)
+++ compiler-rt/trunk/test/cfi/cross-dso/stats.cpp Fri Jan 15 18:31:29 2016
@@ -0,0 +1,59 @@
+// RUN: %clangxx_cfi_dso -DSHARED_LIB -fPIC -g -fsanitize-stats -shared -o %t.so %s
+// RUN: %clangxx_cfi_dso -g -fsanitize-stats -o %t %s %t.so
+// RUN: env SANITIZER_STATS_PATH=%t.stats %t
+// RUN: sanstats %t.stats | FileCheck %s
+
+struct ABase {};
+
+struct A : ABase {
+ virtual void vf() {}
+ void nvf() {}
+};
+
+extern "C" void vcall(A *a);
+extern "C" void nvcall(A *a);
+
+#ifdef SHARED_LIB
+
+extern "C" __attribute__((noinline)) void vcall(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] vcall cfi-vcall 37
+ a->vf();
+}
+
+extern "C" __attribute__((noinline)) void nvcall(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] nvcall cfi-nvcall 51
+ a->nvf();
+}
+
+#else
+
+extern "C" __attribute__((noinline)) A *dcast(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] dcast cfi-derived-cast 24
+ return (A *)(ABase *)a;
+}
+
+extern "C" __attribute__((noinline)) A *ucast(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] ucast cfi-unrelated-cast 81
+ return (A *)(char *)a;
+}
+
+extern "C" __attribute__((noinline)) void unreachable(A *a) {
+ // CHECK-NOT: unreachable
+ a->vf();
+}
+
+int main() {
+ A a;
+ for (unsigned i = 0; i != 37; ++i)
+ vcall(&a);
+ for (unsigned i = 0; i != 51; ++i)
+ nvcall(&a);
+ for (unsigned i = 0; i != 24; ++i)
+ dcast(&a);
+ for (unsigned i = 0; i != 81; ++i)
+ ucast(&a);
+ for (unsigned i = 0; i != 0; ++i)
+ unreachable(&a);
+}
+
+#endif
Added: compiler-rt/trunk/test/cfi/stats.cpp
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/cfi/stats.cpp?rev=257972&view=auto
==============================================================================
--- compiler-rt/trunk/test/cfi/stats.cpp (added)
+++ compiler-rt/trunk/test/cfi/stats.cpp Fri Jan 15 18:31:29 2016
@@ -0,0 +1,49 @@
+// RUN: %clangxx_cfi -g -fsanitize-stats -o %t %s
+// RUN: env SANITIZER_STATS_PATH=%t.stats %t
+// RUN: sanstats %t.stats | FileCheck %s
+
+struct ABase {};
+
+struct A : ABase {
+ virtual void vf() {}
+ void nvf() {}
+};
+
+extern "C" __attribute__((noinline)) void vcall(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] vcall cfi-vcall 37
+ a->vf();
+}
+
+extern "C" __attribute__((noinline)) void nvcall(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] nvcall cfi-nvcall 51
+ a->nvf();
+}
+
+extern "C" __attribute__((noinline)) A *dcast(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] dcast cfi-derived-cast 24
+ return (A *)(ABase *)a;
+}
+
+extern "C" __attribute__((noinline)) A *ucast(A *a) {
+ // CHECK: stats.cpp:[[@LINE+1]] ucast cfi-unrelated-cast 81
+ return (A *)(char *)a;
+}
+
+extern "C" __attribute__((noinline)) void unreachable(A *a) {
+ // CHECK-NOT: unreachable
+ a->vf();
+}
+
+int main() {
+ A a;
+ for (unsigned i = 0; i != 37; ++i)
+ vcall(&a);
+ for (unsigned i = 0; i != 51; ++i)
+ nvcall(&a);
+ for (unsigned i = 0; i != 24; ++i)
+ dcast(&a);
+ for (unsigned i = 0; i != 81; ++i)
+ ucast(&a);
+ for (unsigned i = 0; i != 0; ++i)
+ unreachable(&a);
+}
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