[SYCL] link in with -lsycl when -fsycl is used

Signed-off-by: Vladimir Lazarev <[email protected]>
Signed-off-by: Michael D Toguchi <[email protected]>

Author: mdtoguchi

clang/lib/Driver/ToolChains/Gnu.cpp

@@ -521,6 +521,9 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 
       AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
 
+      if (Args.hasArg(options::OPT_fsycl))
+        CmdArgs.push_back("-lsycl");
+
       if (WantPthread && !isAndroid)
         CmdArgs.push_back("-lpthread");
 

clang/test/Driver/sycl-offload.c

@@ -271,3 +271,9 @@
 // CHK-ADD-TARGETS-UB: 4: clang-offload-wrapper, {3}, object, (device-sycl)
 // CHK-ADD-TARGETS-UB: 5: offload, "host-sycl (x86_64-unknown-linux-gnu)" {2}, "device-sycl (spir64-unknown-linux-sycldevice)" {4}, image
 
+/// ###########################################################################
+
+/// Check for default linking of -lsycl with -fsycl usage
+// RUN: %clang -fsycl -target x86_64-unknown-linux-gnu %s -o %t -### 2>&1 | FileCheck -check-prefix=CHECK-LD-SYCL %s
+// CHECK-LD-SYCL: "{{.*}}ld{{(.exe)?}}"
+// CHECK-LD-SYCL: "-lsycl"