From 98e9e604c7e2e4f928abe8f05691df90cddf09e4 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Tue, 15 Nov 2016 21:36:33 -0800
Subject: add a RemoveUnusedModuleElements pass, and make LegalizeJSInterface
 create TempRet0 if needed (otherwise we might remove it before we use it)

---
 src/ast_utils.h | 28 ----------------------------
 1 file changed, 28 deletions(-)

(limited to 'src/ast_utils.h')

diff --git a/src/ast_utils.h b/src/ast_utils.h
index f10fb40eb..2565ee24a 100644
--- a/src/ast_utils.h
+++ b/src/ast_utils.h
@@ -68,34 +68,6 @@ struct BreakSeeker : public PostWalker<BreakSeeker, Visitor<BreakSeeker>> {
   }
 };
 
-// Finds all functions that are reachable via direct calls.
-
-struct DirectCallGraphAnalyzer : public PostWalker<DirectCallGraphAnalyzer, Visitor<DirectCallGraphAnalyzer>> {
-  Module *module;
-  std::vector<Function*> queue;
-  std::unordered_set<Function*> reachable;
-
-  DirectCallGraphAnalyzer(Module* module, const std::vector<Function*>& root) : module(module) {
-    for (auto* curr : root) {
-      queue.push_back(curr);
-    }
-    while (queue.size()) {
-      auto* curr = queue.back();
-      queue.pop_back();
-      if (reachable.count(curr) == 0) {
-        reachable.insert(curr);
-        walk(curr->body);
-      }
-    }
-  }
-  void visitCall(Call *curr) {
-    auto* target = module->getFunction(curr->target);
-    if (reachable.count(target) == 0) {
-      queue.push_back(target);
-    }
-  }
-};
-
 // Look for side effects, including control flow
 // TODO: optimize
 
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