[hwasan] Implement -fsanitize-recover=hwaddress.

Summary: Very similar to AddressSanitizer, with the exception of the error type encoding.

Reviewers: kcc, alekseyshl

Subscribers: cfe-commits, kubamracek, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D41417

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@321203 91177308-0d34-0410-b5e6-96231b3b80d8

Author: eugenis

lib/CodeGen/BackendUtil.cpp

@@ -239,7 +239,11 @@ static void addKernelAddressSanitizerPasses(const PassManagerBuilder &Builder,
 
 static void addHWAddressSanitizerPasses(const PassManagerBuilder &Builder,
                                             legacy::PassManagerBase &PM) {
-  PM.add(createHWAddressSanitizerPass());
+  const PassManagerBuilderWrapper &BuilderWrapper =
+      static_cast<const PassManagerBuilderWrapper &>(Builder);
+  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
+  bool Recover = CGOpts.SanitizeRecover.has(SanitizerKind::HWAddress);
+  PM.add(createHWAddressSanitizerPass(Recover));
 }
 
 static void addMemorySanitizerPass(const PassManagerBuilder &Builder,