[SYCL][NFC] Added SPIRSYCLDevice target.

Signed-off-by: Vladimir Lazarev <vladimir.lazarev@intel.com>

Author: vladimirlaz

clang/lib/Basic/Targets.cpp

@@ -558,17 +558,29 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
     }
 
   case llvm::Triple::spir: {
-    if (Triple.getOS() != llvm::Triple::UnknownOS ||
-        Triple.getEnvironment() != llvm::Triple::UnknownEnvironment)
-      return nullptr;
+    if (Triple.getEnvironment() == llvm::Triple::SYCLDevice) {
+      switch (os) {
+      case llvm::Triple::Linux:
+        return new LinuxTargetInfo<SPIR32SYCLDeviceTargetInfo>(Triple, Opts);
+      default:
+        return new SPIR32SYCLDeviceTargetInfo(Triple, Opts);
+      }
+    }
     return new SPIR32TargetInfo(Triple, Opts);
   }
+
   case llvm::Triple::spir64: {
-    if (Triple.getOS() != llvm::Triple::UnknownOS ||
-        Triple.getEnvironment() != llvm::Triple::UnknownEnvironment)
-      return nullptr;
+    if (Triple.getEnvironment() == llvm::Triple::SYCLDevice) {
+      switch (os) {
+      case llvm::Triple::Linux:
+        return new LinuxTargetInfo<SPIR64SYCLDeviceTargetInfo>(Triple, Opts);
+      default:
+        return new SPIR64SYCLDeviceTargetInfo(Triple, Opts);
+      }
+    }
     return new SPIR64TargetInfo(Triple, Opts);
   }
+
   case llvm::Triple::wasm32:
     if (Triple.getSubArch() != llvm::Triple::NoSubArch ||
         Triple.getVendor() != llvm::Triple::UnknownVendor ||

clang/lib/Basic/Targets/SPIR.h

@@ -38,10 +38,6 @@ class LLVM_LIBRARY_VISIBILITY SPIRTargetInfo : public TargetInfo {
 public:
   SPIRTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
       : TargetInfo(Triple) {
-    assert(getTriple().getOS() == llvm::Triple::UnknownOS &&
-           "SPIR target must use unknown OS");
-    assert(getTriple().getEnvironment() == llvm::Triple::UnknownEnvironment &&
-           "SPIR target must use unknown environment type");
     TLSSupported = false;
     VLASupported = false;
     LongWidth = LongAlign = 64;
@@ -127,6 +123,43 @@ class LLVM_LIBRARY_VISIBILITY SPIR64TargetInfo : public SPIRTargetInfo {
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override;
 };
+
+class LLVM_LIBRARY_VISIBILITY SPIR32SYCLDeviceTargetInfo
+    : public SPIR32TargetInfo {
+public:
+  SPIR32SYCLDeviceTargetInfo(const llvm::Triple &Triple,
+                             const TargetOptions &Opts)
+      : SPIR32TargetInfo(Triple, Opts) {
+    // This is workaround for exception_ptr class.
+    // Exceptions is not allowed in sycl device code but we should be able
+    // to parse host code. So we allow compilation of exception_ptr but
+    // if exceptions are used in device code we should emit a diagnostic.
+    MaxAtomicInlineWidth = 32;
+    // This is workaround for mutex class.
+    // I'm not sure about this hack but I guess that mutex_class is same
+    // problem.
+    TLSSupported = true;
+  }
+};
+
+class LLVM_LIBRARY_VISIBILITY SPIR64SYCLDeviceTargetInfo
+    : public SPIR64TargetInfo {
+public:
+  SPIR64SYCLDeviceTargetInfo(const llvm::Triple &Triple,
+                             const TargetOptions &Opts)
+      : SPIR64TargetInfo(Triple, Opts) {
+    // This is workaround for exception_ptr class.
+    // Exceptions is not allowed in sycl device code but we should be able
+    // to parse host code. So we allow compilation of exception_ptr but
+    // if exceptions are used in device code we should emit a diagnostic.
+    MaxAtomicInlineWidth = 64;
+    // This is workaround for mutex class.
+    // I'm not sure about this hack but I guess that mutex_class is same
+    // problem.
+    TLSSupported = true;
+  }
+};
+
 } // namespace targets
 } // namespace clang
 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H