diff options
Diffstat (limited to 'test/unit/test_stack_ir.py')
| -rw-r--r-- | test/unit/test_stack_ir.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/unit/test_stack_ir.py b/test/unit/test_stack_ir.py new file mode 100644 index 000000000..1fcab88d8 --- /dev/null +++ b/test/unit/test_stack_ir.py @@ -0,0 +1,19 @@ +import os +from scripts.test import shared +from . import utils + + +class StackIRTest(utils.BinaryenTestCase): + # test that stack IR opts make a difference. + def test_stack_ir_opts(self): + path = self.input_path('stack_ir.wast') + opt = shared.run_process(shared.WASM_OPT + [path, '-O', '--generate-stack-ir', '--optimize-stack-ir', '--print-stack-ir', '-o', 'a.wasm'], capture_output=True).stdout + nonopt = shared.run_process(shared.WASM_OPT + [path, '-O', '--generate-stack-ir', '--print-stack-ir', '-o', 'b.wasm'], capture_output=True).stdout + # see a difference in the printed stack IR (the optimizations let us + # remove a pair of local.set/get) + self.assertNotEqual(opt, nonopt) + self.assertLess(len(opt), len(nonopt)) + # see a difference in the actual emitted wasm binary. + opt_size = os.path.getsize('a.wasm') + nonopt_size = os.path.getsize('b.wasm') + self.assertLess(opt_size, nonopt_size) |