internal/rosa/llvm: run unit and regression tests

Two tests are marked expected to fail for Rosa OS.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -320,6 +320,33 @@ ln -s \
 			musl,
 			compilerRT,
 			runtimes,
+			t.NewGit(),
+		},
+		script: `
+ninja check-all
+`,
+
+		patches: [][2]string{
+			{"xfail-broken-tests", `diff --git a/clang/test/Driver/hexagon-toolchain-linux.c b/clang/test/Driver/hexagon-toolchain-linux.c
+index e791353cca07..01e379d3d8b8 100644
+--- a/clang/test/Driver/hexagon-toolchain-linux.c
++++ b/clang/test/Driver/hexagon-toolchain-linux.c
+@@ -1,3 +1,5 @@
++// XFAIL: target={{.*}}-rosa-{{.*}}
++
+ // UNSUPPORTED: system-windows
+
+ // -----------------------------------------------------------------------------
+diff --git a/clang/test/Modules/timestamps.c b/clang/test/Modules/timestamps.c
+index 50fdce630255..45d7e1f63c50 100644
+--- a/clang/test/Modules/timestamps.c
++++ b/clang/test/Modules/timestamps.c
+@@ -1,3 +1,5 @@
++// XFAIL: target={{.*}}-rosa-{{.*}}
++
+ /// Verify timestamps that gets embedded in the module
+ #include <c-header.h>
+`},
 		},
 	})