add early remove-unused-module-elements

Author: MaxGraey

cli/asc.js

@@ -694,6 +694,7 @@ exports.main = function main(argv, options, callback) {
 
       // PassRunner::addDefaultGlobalOptimizationPrePasses
       add("duplicate-function-elimination");
+      add("remove-unused-module-elements"); // differs
 
       // PassRunner::addDefaultFunctionOptimizationPasses
       if (optimizeLevel >= 3 || shrinkLevel >= 1) {

tests/compiler/extends-recursive.optimized.wat

@@ -1,15 +1,12 @@
 (module
- (type $none_=>_none (func))
  (type $i32_i32_=>_none (func (param i32 i32)))
  (type $i32_=>_i32 (func (param i32) (result i32)))
  (memory $0 0)
- (global $~lib/rt/stub/offset (mut i32) (i32.const 0))
  (global $extends-recursive/Child i32 (i32.const 3))
  (export "memory" (memory $0))
  (export "Child" (global $extends-recursive/Child))
  (export "Child#get:child" (func $extends-recursive/Parent#get:child))
  (export "Child#set:child" (func $extends-recursive/Parent#set:child))
- (start $~start)
  (func $extends-recursive/Parent#get:child (param $0 i32) (result i32)
   local.get $0
   i32.load
@@ -22,8 +19,4 @@
   local.get $1
   i32.store
  )
- (func $~start
-  i32.const 1024
-  global.set $~lib/rt/stub/offset
- )
 )