Support TSL compilation on Windows with CUDA support.

This is following up on #15444. There's still one issue blocking Windows support that I haven't resolved. I've described it here. Any suggestions/advice on how to proceed for that one would be helpful. cc @hawkinsp @ddunl and also fyi @metab0t.

This closes #15499.

PiperOrigin-RevId: 663079395

third_party/tsl/third_party/gpus/crosstool/windows/msvc_wrapper_for_nvcc.py.tpl

@@ -181,6 +181,9 @@ def InvokeNvcc(argv, log=False):
   nvccopts += ['--keep', '--keep-dir', tempdir]
   # Force C++17 dialect (note, everything in just one string!)
   nvccopts += ['--std c++17']
+  # This is so that nvcc does not complain about MSVC or CLANG.
+  nvccopts += ['-allow-unsupported-compiler']
+  nvccopts += ['--expt-extended-lambda', '--expt-relaxed-constexpr']
   if log:
     Log([NVCC_PATH] + nvccopts)
 

third_party/tsl/third_party/gpus/cuda/build_defs.bzl.tpl

@@ -104,9 +104,16 @@ def if_cuda_newer_than(wanted_ver, if_true, if_false = []):
     wanted_major = int(wanted_ver.split('_')[0])
     wanted_minor = int(wanted_ver.split('_')[1])
 
-    configured_version = "%{cuda_version}"
-    configured_major = int(configured_version.split('.')[0])
-    configured_minor = int(configured_version.split('.')[1])
+    # Strip "64_" which appears in the CUDA version on Windows.
+    configured_version = "%{cuda_version}".rsplit("_", 1)[-1]
+    configured_version_parts = configured_version.split('.')
+
+    # On Windows, the major and minor versions are concatenated without a period and the minor only contains one digit.
+    if len(configured_version_parts) == 1:
+        configured_version_parts = [configured_version[0:-1], configured_version[-1:]]
+
+    configured_major = int(configured_version_parts[0])
+    configured_minor = int(configured_version_parts[1])
 
     if %{cuda_is_configured} and (wanted_major, wanted_minor) <= (configured_major, configured_minor):
       return select({"//conditions:default": if_true})

third_party/tsl/tsl/profiler/lib/nvtx_utils.cc

@@ -36,7 +36,7 @@ namespace {
 // nvtxNameOsThreadA:
 // https://nvidia.github.io/NVTX/doxygen/group___r_e_s_o_u_r_c_e___n_a_m_i_n_g.html
 // This convention may not match the one in tsl::Env::GetCurrentThreadId().
-std::optional<uint32_t> GetCurrentThreadId() {
+std::optional<uint32_t> MaybeGetCurrentThreadId() {
 #ifdef __linux__
   return syscall(SYS_gettid);
 #else
@@ -57,7 +57,8 @@ ProfilerDomainHandle DefaultProfilerDomain() {
 }
 
 void NameCurrentThread(const std::string& thread_name) {
-  if (std::optional<uint32_t> tid = GetCurrentThreadId(); tid.has_value()) {
+  if (std::optional<uint32_t> tid = MaybeGetCurrentThreadId();
+      tid.has_value()) {
     nvtxNameOsThreadA(*tid, thread_name.c_str());
   }
 }