Revert "Revert: do not use clang 20 yet for SYCL, reverted to clang 19"

This reverts commit 825c9c4.

.gitlab/jobs/corona.yml

@@ -27,8 +27,10 @@
 # ${PROJECT_<MACHINE>_DEPS} in the extra jobs. There is no reason not to fully
 # describe the spec here.
 
-clang_19_0_0_sycl_gcc_10_3_1_rocmcc_5_7_1_hip:
+clang_20_0_0_sycl_gcc_10_3_1_rocmcc_6_0_2_hip:
   variables:
-    SPEC: " ~shared +sycl ~openmp tests=basic %clang@=19.0.0 cxxflags==\"-w -fsycl -fsycl-unnamed-lambda -fsycl-targets=amdgcn-amd-amdhsa -Xsycl-target-backend --offload-arch=gfx906\" ^blt@develop"
-    MODULE_LIST: "rocm/5.7.1"
+    SPEC: " ~shared +sycl ~openmp tests=basic %clang@=20.0.0 cxxflags==\"-w -fsycl -fsycl-unnamed-lambda -fsycl-targets=amdgcn-amd-amdhsa -Xsycl-target-backend --offload-arch=gfx906\" ^blt@develop"
+    MODULE_LIST: "rocm/6.0.2"
+    SYCL_PATH: "/usr/WS2/raja-dev/clang_sycl_730cd3a5275f_hip_gcc10.3.1_rocm6.0.2/"
+    LD_LIBRARY_PATH: "${SYCL_PATH}/lib:${SYCL_PATH}/lib64:${LD_LIBRARY_PATH}"
   extends: .job_on_corona