From 01b23987405d8d7b2f13e40ef906169163ac2a5f Mon Sep 17 00:00:00 2001
From: Daniel Wirtz <dcode@dcode.io>
Date: Wed, 17 Jan 2018 18:25:49 +0100
Subject: Add optimize, shrink level and debug info options to C/JS (#1357)

* Add optimize, shrink level and debug info options to C/JS

* Add instantiate functionality for creating additional unique instances of the API

* Use a workaround when running tests in node

Tests misuse a module as a script by concatenating, so instead of catching this case in the library, catch it there

* Update sieve test

Seems optimized output changed due to running with optimize levels 2/1 now

* Use the options with all pass runners

* Update relooper-fuzz C-API test

* Share defaults between tools and the C-API

* Add a test for optimize levels

* Unify node test support in check.by and auto_update_tests.py

* Also add getters for optimize levels and test them

* Also test debugInfo

* Add debug info to C tests that used it as well

* Fix missing NODEJS import in auto_update_tests

* Detect node.js version (WASM support)

* Update hello-world JS test (now also runs with node)

* feature-test WebAssembly in node instead

* Document that these options apply globally, and where

* Make sure hello-world.js output doesn't differ between mozjs/node
---
 test/binaryen.js/optimize-levels.js | 60 +++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 test/binaryen.js/optimize-levels.js

(limited to 'test/binaryen.js/optimize-levels.js')

diff --git a/test/binaryen.js/optimize-levels.js b/test/binaryen.js/optimize-levels.js
new file mode 100644
index 000000000..1ee4943ca
--- /dev/null
+++ b/test/binaryen.js/optimize-levels.js
@@ -0,0 +1,60 @@
+var wast = `
+(module
+ (type $i (func (param i32) (result i32)))
+ (memory $0 0)
+ (export "test" (func $test))
+ (func $test (; 0 ;) (type $i) (param $0 i32) (result i32)
+  (block (result i32)
+   (if (result i32)
+    (get_local $0)
+    (get_local $0)
+    (i32.const 0)
+   )
+  )
+ )
+)
+`;
+console.log("=== input wast ===" + wast);
+
+function printOptions() {
+  console.log("optimizeLevel=" + Binaryen.getOptimizeLevel());
+  console.log("shrinkLevel=" + Binaryen.getShrinkLevel());
+}
+
+// Use defaults (should be equal to -Os below)
+var module = Binaryen.parseText(wast);
+
+console.log("=== unoptimized ===");
+module.validate();
+console.log(module.emitText());
+
+module.optimize();
+console.log("=== optimized using defaults ===");
+printOptions();
+module.validate();
+console.log(module.emitText());
+module.dispose();
+
+// Use -O0 (should remove the block)
+module = Binaryen.parseText(wast);
+
+Binaryen.setOptimizeLevel(0);
+Binaryen.setShrinkLevel(0);
+module.optimize();
+console.log("=== optimized with -O0 ===");
+printOptions();
+module.validate();
+console.log(module.emitText());
+module.dispose();
+
+// Use -Os (should remove the block and convert to a select)
+module = Binaryen.parseText(wast);
+
+Binaryen.setOptimizeLevel(2);
+Binaryen.setShrinkLevel(1);
+module.optimize();
+console.log("=== optimized with -Os ===");
+printOptions();
+module.validate();
+console.log(module.emitText());
+module.dispose();
-- 
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