[clang-sycl-linker] Fix flaky failure and add REQUIRES (Try #2)

clang/test/Driver/clang-sycl-linker-test.cpp

@@ -1,5 +1,7 @@
 // Tests the clang-sycl-linker tool.
 //
+// REQUIRES: spirv-registered-target
+//
 // Test the dry run of a simple case to link two input files.
 // RUN: %clangxx -emit-llvm -c -target spirv64 %s -o %t_1.bc
 // RUN: %clangxx -emit-llvm -c -target spirv64 %s -o %t_2.bc

clang/test/Driver/link-device-code.test

@@ -1,3 +1,5 @@
+# REQUIRES: spirv-registered-target
+
 # RUN: llvm-as %S/Inputs/SYCL/foo.ll -o %t.foo.bc
 # RUN: llvm-as %S/Inputs/SYCL/bar.ll -o %t.bar.bc
 # RUN: llvm-as %S/Inputs/SYCL/baz.ll -o %t.baz.bc

clang/test/Driver/sycl-link-spirv-target.cpp

@@ -1,6 +1,8 @@
 // Tests the driver when linking LLVM IR bitcode files and targeting SPIR-V
 // architecture.
 //
+// REQUIRES: spirv-registered-target
+//
 // Test that -Xlinker options are being passed to clang-sycl-linker.
 // RUN: touch %t.bc
 // RUN: %clangxx -### --target=spirv64 --sycl-link -Xlinker -triple=spirv64 -Xlinker --library-path=/tmp \

clang/tools/clang-sycl-linker/ClangSYCLLinker.cpp

@@ -288,6 +288,9 @@ static Expected<StringRef> runSPIRVCodeGen(StringRef File, const ArgList &Args,
   if (!M)
     return createStringError(Err.getMessage());
 
+  if (Error Err = M->materializeAll())
+    return std::move(Err);
+
   Triple TargetTriple(Args.getLastArgValue(OPT_triple_EQ));
   M->setTargetTriple(TargetTriple);