Re-add reset changes

Author: gbMattN

clang/docs/TypeSanitizer.rst

@@ -187,10 +187,6 @@ Limitations
   shadow memory for each byte of user memory.
 * There are transformation passes which run before TypeSanitizer. If these 
   passes optimize out an aliasing violation, TypeSanitizer cannot catch it.
-* Currently, all instrumentation is inlined. This can result in a **15x** 
-  (on average) increase in generated file size, and **3x** to **7x** increase 
-  in compile time. In some documented cases this can cause the compiler to hang.
-  There are plans to improve this in the future.
 * Codebases that use unions and struct-initialized variables can see incorrect 
   results, as TypeSanitizer doesn't yet instrument these reliably.
 * Since Clang & LLVM's TBAA system is used to generate the checks used by the 

clang/lib/Driver/SanitizerArgs.cpp

@@ -1511,6 +1511,10 @@ void SanitizerArgs::addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args,
     CmdArgs.push_back("-mllvm");
     CmdArgs.push_back("-tysan-outline-instrumentation");
   }
+  else{
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back("-tysan-outline-instrumentation=false");
+  }
 
   // When emitting Stable ABI instrumentation, force outlining calls and avoid
   // inlining shadow memory poisoning. While this is a big performance burden

llvm/docs/ReleaseNotes.md

@@ -217,6 +217,8 @@ Changes to BOLT
 Changes to Sanitizers
 ---------------------
 
+* TypeSanitizer no longer inlines all instrumentation by default
+
 Other Changes
 -------------