Retry landing cl for issue with TSAN.

runtime/vm/globals.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_GLOBALS_H_
 #define RUNTIME_VM_GLOBALS_H_
 
 // This file contains global definitions for the VM library only. Anything that
 // is more globally useful should be added to 'vm/globals.h'.
 
@@ skipping 89 matching lines @@
 // Macros to get the contents of the fp register.
 #if defined(TARGET_OS_WINDOWS)
 
 // clang-format off
 #if defined(HOST_ARCH_IA32)
 #define COPY_FP_REGISTER(fp)                                                   \
   __asm { mov fp, ebp}                                                         \
   ;  // NOLINT
 // clang-format on
 #elif defined(HOST_ARCH_X64)
-#define COPY_FP_REGISTER(fp) UNIMPLEMENTED();
+// We don't have the asm equivalent to get at the frame pointer on
+// windows x64, return the stack pointer instead.
+#define COPY_FP_REGISTER(fp) fp = Thread::GetCurrentStackPointer();
 #else
 #error Unknown host architecture.
 #endif
 
 #else  // !defined(TARGET_OS_WINDOWS))
 
 // Assume GCC-like inline syntax is valid.
 #if defined(HOST_ARCH_IA32)
 #define COPY_FP_REGISTER(fp) asm volatile("movl %%ebp, %0" : "=r"(fp));
 #elif defined(HOST_ARCH_X64)
@@ skipping 18 matching lines @@
 // Default value for flag --use-corelib-source-files.
 #if defined(TARGET_OS_WINDOWS)
 static const bool kDefaultCorelibSourceFlag = true;
 #else
 static const bool kDefaultCorelibSourceFlag = false;
 #endif  // defined(TARGET_OS_WINDOWS)
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_GLOBALS_H_