CUDA: gencode signature that list multiple code types now supported.

Fixes #17263

Source/cmVisualStudioGeneratorOptions.cxx

@@ -239,20 +239,32 @@ void cmVisualStudioGeneratorOptions::FixCudaCodeGeneration()
       // It translates to -arch=<virtual> -code=<real>.
       cmSystemTools::ReplaceString(arch_name, "sm_", "compute_");
     }
-    for (std::vector<std::string>::iterator ci = codes.begin();
-         ci != codes.end(); ++ci) {
-      std::string entry = arch_name + "," + *ci;
+    for (auto const& c : codes) {
+      std::string entry = arch_name + "," + c;
       result.push_back(entry);
     }
   }
 
-  // Now add entries for the -gencode=<arch>,<code> pairs.
-  for (std::vector<std::string>::iterator ei = gencode.begin();
-       ei != gencode.end(); ++ei) {
-    std::string entry = *ei;
+  // Now add entries for the following signatures:
+  // -gencode=<arch>,<code>
+  // -gencode=<arch>,[<code1>,<code2>]
+  // -gencode=<arch>,"<code1>,<code2>"
+  for (auto const& e : gencode) {
+    std::string entry = e;
     cmSystemTools::ReplaceString(entry, "arch=", "");
     cmSystemTools::ReplaceString(entry, "code=", "");
-    result.push_back(entry);
+    cmSystemTools::ReplaceString(entry, "[", "");
+    cmSystemTools::ReplaceString(entry, "]", "");
+    cmSystemTools::ReplaceString(entry, "\"", "");
+
+    std::vector<std::string> codes = cmSystemTools::tokenize(entry, ",");
+    if (codes.size() >= 2) {
+      auto gencode_arch = cm::cbegin(codes);
+      for (auto ci = gencode_arch + 1; ci != cm::cend(codes); ++ci) {
+        std::string code_entry = *gencode_arch + "," + *ci;
+        result.push_back(code_entry);
+      }
+    }
   }
 }
 

Tests/CudaOnly/ResolveDeviceSymbols/CMakeLists.txt

@@ -21,7 +21,7 @@ endif()
 # Resolve the device symbols into that static library
 # Verify that we can't use those device symbols from anything that links
 # to the static library
-string(APPEND CMAKE_CUDA_FLAGS " -gencode arch=compute_30,code=compute_30")
+string(APPEND CMAKE_CUDA_FLAGS " -gencode arch=compute_30,code=[compute_30] -gencode arch=compute_50,code=\\\"compute_50\\\"")
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CUDA_STANDARD 11)
 

Tests/CudaOnly/SeparateCompilation/CMakeLists.txt

@@ -9,7 +9,8 @@ project (CudaOnlySeparateCompilation CUDA)
 #and executables.
 #We complicate the matter by also testing that multiple static libraries
 #all containing cuda separable compilation code links properly
-string(APPEND CMAKE_CUDA_FLAGS " -gencode arch=compute_30,code=compute_30")
+string(APPEND CMAKE_CUDA_FLAGS " -gencode arch=compute_30,code=\\\"compute_30,sm_30,sm_35\\\"")
+string(APPEND CMAKE_CUDA_FLAGS " --generate-code=arch=compute_50,code=[compute_50,sm_50,sm_52]")
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CUDA_STANDARD 11)