Import compiler-rt trunk r224034.vendor/compiler-rt/compiler-rt-r224034

https://llvm.org/svn/llvm-project/compiler-rt/trunk@224034

1 files changed, 0 insertions, 113 deletions

diff --git a/lib/sanitizer_common/sanitizer_coverage.cc b/lib/sanitizer_common/sanitizer_coverage.cc
deleted file mode 100644
index 9e7a0f8b95fb..000000000000
--- a/lib/sanitizer_common/sanitizer_coverage.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-//===-- sanitizer_coverage.cc ---------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Sanitizer Coverage.
-// This file implements run-time support for a poor man's coverage tool.
-//
-// Compiler instrumentation:
-// For every function F the compiler injects the following code:
-// if (*Guard) {
-//    __sanitizer_cov(&F);
-//    *Guard = 1;
-// }
-// It's fine to call __sanitizer_cov more than once for a given function.
-//
-// Run-time:
-//  - __sanitizer_cov(pc): record that we've executed a given PC.
-//  - __sanitizer_cov_dump: dump the coverage data to disk.
-//  For every module of the current process that has coverage data
-//  this will create a file module_name.PID.sancov. The file format is simple:
-//  it's just a sorted sequence of 4-byte offsets in the module.
-//
-// Eventually, this coverage implementation should be obsoleted by a more
-// powerful general purpose Clang/LLVM coverage instrumentation.
-// Consider this implementation as prototype.
-//
-// FIXME: support (or at least test with) dlclose.
-//===----------------------------------------------------------------------===//
-
-#include "sanitizer_allocator_internal.h"
-#include "sanitizer_common.h"
-#include "sanitizer_libc.h"
-#include "sanitizer_mutex.h"
-#include "sanitizer_procmaps.h"
-#include "sanitizer_flags.h"
-
-struct CovData {
-  BlockingMutex mu;
-  InternalMmapVector<uptr> v;
-};
-
-static uptr cov_data_placeholder[sizeof(CovData) / sizeof(uptr)];
-COMPILER_CHECK(sizeof(cov_data_placeholder) >= sizeof(CovData));
-static CovData *cov_data = reinterpret_cast<CovData*>(cov_data_placeholder);
-
-namespace __sanitizer {
-
-// Simply add the pc into the vector under lock. If the function is called more
-// than once for a given PC it will be inserted multiple times, which is fine.
-static void CovAdd(uptr pc) {
-  BlockingMutexLock lock(&cov_data->mu);
-  cov_data->v.push_back(pc);
-}
-
-static inline bool CompareLess(const uptr &a, const uptr &b) {
-  return a < b;
-}
-
-// Dump the coverage on disk.
-void CovDump() {
-#if !SANITIZER_WINDOWS
-  BlockingMutexLock lock(&cov_data->mu);
-  InternalMmapVector<uptr> &v = cov_data->v;
-  InternalSort(&v, v.size(), CompareLess);
-  InternalMmapVector<u32> offsets(v.size());
-  const uptr *vb = v.data();
-  const uptr *ve = vb + v.size();
-  MemoryMappingLayout proc_maps(/*cache_enabled*/false);
-  uptr mb, me, off, prot;
-  InternalScopedBuffer<char> module(4096);
-  InternalScopedBuffer<char> path(4096 * 2);
-  for (int i = 0;
-       proc_maps.Next(&mb, &me, &off, module.data(), module.size(), &prot);
-       i++) {
-    if ((prot & MemoryMappingLayout::kProtectionExecute) == 0)
-      continue;
-    if (vb >= ve) break;
-    if (mb <= *vb && *vb < me) {
-      offsets.clear();
-      const uptr *old_vb = vb;
-      CHECK_LE(off, *vb);
-      for (; vb < ve && *vb < me; vb++) {
-        uptr diff = *vb - (i ? mb : 0) + off;
-        CHECK_LE(diff, 0xffffffffU);
-        offsets.push_back(static_cast<u32>(diff));
-      }
-      char *module_name = StripModuleName(module.data());
-      internal_snprintf((char *)path.data(), path.size(), "%s.%zd.sancov",
-                        module_name, internal_getpid());
-      InternalFree(module_name);
-      uptr fd = OpenFile(path.data(), true);
-      internal_write(fd, offsets.data(), offsets.size() * sizeof(u32));
-      internal_close(fd);
-      if (common_flags()->verbosity)
-        Report(" CovDump: %s: %zd PCs written\n", path.data(), vb - old_vb);
-    }
-  }
-#endif  // !SANITIZER_WINDOWS
-}
-
-}  // namespace __sanitizer
-
-extern "C" {
-SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cov(void *pc) {
-  CovAdd(reinterpret_cast<uptr>(pc));
-}
-SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cov_dump() { CovDump(); }
-}  // extern "C"