[clang] [llvm] Reland - [Driver][SYCL] Add initial SYCL offload compilation support … (PR #117268)

[Michael Toguchi via llvm-commits]

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@@ -6591,6 +6681,18 @@ const ToolChain &Driver::getOffloadingDeviceToolChain(
                                                            HostTC, Args);
       break;
     }
+    case Action::OFK_SYCL:
+      switch (Target.getArch()) {
+      case llvm::Triple::spir:
+      case llvm::Triple::spir64:
+      case llvm::Triple::spirv32:
+      case llvm::Triple::spirv64:
+        TC = std::make_unique<toolchains::SYCLToolChain>(*this, Target, HostTC,
+                                                         Args);
+        break;
+      default:
+        break;
+      }
     default:
       break;
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mdtoguchi wrote:

I followed the `OFK_HIP` usage here and added an assert if `TC` isn't populated. https://github.com/llvm/llvm-project/blob/3fdc74687dbf6da831a1c27995d9d7fef3a2a51f/clang/lib/Driver/Driver.cpp#L1063

https://github.com/llvm/llvm-project/pull/117268