Tread TSan LLVM flags to driver: add TSan controlling flags to clang.

Summary:
New clang flags, all default to true:
-f[no-]sanitize-thread-data-races
-f[no-]sanitize-thread-stack-traces
-f[no-]sanitize-thread-atomics

Reviewers: dvyukov, pcc, eugenis

Subscribers: pcc, cfe-commits

Patch by Alex Shlyapnikov.

Differential Revision: https://reviews.llvm.org/D26461

llvm-svn: 286669

1 files changed, 28 insertions, 0 deletions

diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index 67a0e3e551b..16a3672472d 100644
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -437,6 +437,18 @@ SanitizerArgs::SanitizerArgs(const ToolChain &TC,
                  TC.getTriple().getArch() == llvm::Triple::x86_64);
   }
 
+  if (AllAddedKinds & Thread) {
+    TsanMemoryAccess = Args.hasFlag(options::OPT_fsanitize_thread_memory_access,
+                                    options::OPT_fno_sanitize_thread_memory_access,
+                                    TsanMemoryAccess);
+    TsanFuncEntryExit = Args.hasFlag(options::OPT_fsanitize_thread_func_entry_exit,
+                                     options::OPT_fno_sanitize_thread_func_entry_exit,
+                                     TsanFuncEntryExit);
+    TsanAtomics = Args.hasFlag(options::OPT_fsanitize_thread_atomics,
+                               options::OPT_fno_sanitize_thread_atomics,
+                               TsanAtomics);
+  }
+
   if (AllAddedKinds & CFI) {
     CfiCrossDso = Args.hasFlag(options::OPT_fsanitize_cfi_cross_dso,
                                options::OPT_fno_sanitize_cfi_cross_dso, false);
@@ -685,6 +697,22 @@ void SanitizerArgs::addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args,
   if (MsanUseAfterDtor)
     CmdArgs.push_back(Args.MakeArgString("-fsanitize-memory-use-after-dtor"));
 
+  // FIXME: Pass these parameters as function attributes, not as -llvm flags.
+  if (!TsanMemoryAccess) {
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back("-tsan-instrument-memory-accesses=0");
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back("-tsan-instrument-memintrinsics=0");
+  }
+  if (!TsanFuncEntryExit) {
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back("-tsan-instrument-func-entry-exit=0");
+  }
+  if (!TsanAtomics) {
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back("-tsan-instrument-atomics=0");
+  }
+
   if (CfiCrossDso)
     CmdArgs.push_back(Args.MakeArgString("-fsanitize-cfi-cross-dso"));