[SYCL] Adds test for building a simple SYCL program with -g and optimizations (intel#279)

Signed-off-by: Steffen Larsen <steffen.larsen@codeplay.com>

Author: steffenlarsen

SYCL/Regression/optimization_level_debug_info.cpp

@@ -0,0 +1,25 @@
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -O0 -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -O1 -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -O2 -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -O3 -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -Ofast -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -Os -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -Oz -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -Og -o %t.out
+// RUN: %clangxx %debug_option -fsycl -fsycl-targets=%sycl_triple %s -O -o %t.out
+
+// NOTE: Tests that debugging information can be generated for all optimization
+// levels.
+
+#include <CL/sycl.hpp>
+
+int main() {
+  sycl::queue q;
+
+  q.submit([&](sycl::handler &cgh) {
+    cgh.parallel_for<class kernel_test>(100, [=](sycl::id<1> idx) {});
+  });
+  q.wait();
+
+  return 0;
+}