Define NetBSD/amd64 ASAN Shadow Offset

Summary:
Catch up after compiler-rt changes and define kNetBSD_ShadowOffset64
as (1ULL << 46).
 
Sponsored by <The NetBSD Foundation>

Reviewers: kcc, joerg, filcab, vitalybuka, eugenis

Reviewed By: eugenis

Subscribers: llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D37234

llvm-svn: 311941

llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp

@@ -83,6 +83,7 @@ static const uint64_t kMIPS64_ShadowOffset64 = 1ULL << 37;
 static const uint64_t kAArch64_ShadowOffset64 = 1ULL << 36;
 static const uint64_t kFreeBSD_ShadowOffset32 = 1ULL << 30;
 static const uint64_t kFreeBSD_ShadowOffset64 = 1ULL << 46;
+static const uint64_t kNetBSD_ShadowOffset64 = 1ULL << 46;
 static const uint64_t kPS4CPU_ShadowOffset64 = 1ULL << 40;
 static const uint64_t kWindowsShadowOffset32 = 3ULL << 28;
 // The shadow memory space is dynamically allocated.
@@ -402,6 +403,7 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
   bool IsAndroid = TargetTriple.isAndroid();
   bool IsIOS = TargetTriple.isiOS() || TargetTriple.isWatchOS();
   bool IsFreeBSD = TargetTriple.isOSFreeBSD();
+  bool IsNetBSD = TargetTriple.isOSNetBSD();
   bool IsPS4CPU = TargetTriple.isPS4CPU();
   bool IsLinux = TargetTriple.isOSLinux();
   bool IsPPC64 = TargetTriple.getArch() == llvm::Triple::ppc64 ||
@@ -446,6 +448,8 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
       Mapping.Offset = kSystemZ_ShadowOffset64;
     else if (IsFreeBSD)
       Mapping.Offset = kFreeBSD_ShadowOffset64;
+    else if (IsNetBSD)
+      Mapping.Offset = kNetBSD_ShadowOffset64;
     else if (IsPS4CPU)
       Mapping.Offset = kPS4CPU_ShadowOffset64;
     else if (IsLinux && IsX86_64) {