scripts: test/bench.py: Sped up simple suite/case filters

By "simple" I mean any non-globbing suite/case ids.

Non-globbing suite/case ids can be filtered early in the test_runner.
But globbing ids require, surprise, globbing, which is currently handled
by test/bench.py.

---

This greatly speeds up valgrind testing of specific suites/cases,
otherwise things get bogged down during the initial --list-cases due to
the sheer number of test permutations we've accumulated.

Maybe we shouldn't be running the initial --list-cases under Valgrind,
but oh well. This mostly solves the problem without too many changes.

scripts/bench.py

@@ -945,7 +945,12 @@ def find_ids(runner, bench_ids=[], **args):
             expected_suite_perms,
             expected_case_perms,
             _,
-            _) = find_perms(runner, **args)
+            _) = find_perms(
+                runner,
+                # the runner can filter faster than we can, but not if
+                # we have any globs
+                bench_ids if not any('*' in id for id in bench_ids) else [],
+                **args)
 
     # no ids => all ids, before we evaluate globs
     if not bench_ids and args.get('by_cases'):

scripts/test.py

@@ -965,7 +965,12 @@ def find_ids(runner, test_ids=[], **args):
             expected_suite_perms,
             expected_case_perms,
             _,
-            _) = find_perms(runner, **args)
+            _) = find_perms(
+                runner,
+                # the runner can filter faster than we can, but not if
+                # we have any globs
+                test_ids if not any('*' in id for id in test_ids) else [],
+                **args)
 
     # no ids => all ids, before we evaluate globs
     if not test_ids and args.get('by_cases'):