From 6098d7c270a3b16c4c68dd6996597eae2a74a5f4 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Mon, 9 Nov 2015 11:24:06 -0800
Subject: restructure code, put emscripten-optimizer stuff in its own dir

---
 src/emscripten-optimizer/optimizer.h | 127 +++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 src/emscripten-optimizer/optimizer.h

(limited to 'src/emscripten-optimizer/optimizer.h')

diff --git a/src/emscripten-optimizer/optimizer.h b/src/emscripten-optimizer/optimizer.h
new file mode 100644
index 000000000..5edcaad87
--- /dev/null
+++ b/src/emscripten-optimizer/optimizer.h
@@ -0,0 +1,127 @@
+
+#ifndef __optimizer_h__
+#define __optimizer_h__
+
+#include "simple_ast.h"
+
+extern bool preciseF32,
+            receiveJSON,
+            emitJSON,
+            minifyWhitespace,
+            last;
+
+extern cashew::Ref extraInfo;
+
+void eliminateDeadFuncs(cashew::Ref ast);
+void eliminate(cashew::Ref ast, bool memSafe=false);
+void eliminateMemSafe(cashew::Ref ast);
+void simplifyExpressions(cashew::Ref ast);
+void optimizeFrounds(cashew::Ref ast);
+void simplifyIfs(cashew::Ref ast);
+void registerize(cashew::Ref ast);
+void registerizeHarder(cashew::Ref ast);
+void minifyLocals(cashew::Ref ast);
+void asmLastOpts(cashew::Ref ast);
+
+//
+
+enum AsmType {
+  ASM_INT = 0,
+  ASM_DOUBLE,
+  ASM_FLOAT,
+  ASM_FLOAT32X4,
+  ASM_FLOAT64X2,
+  ASM_INT8X16,
+  ASM_INT16X8,
+  ASM_INT32X4,
+  ASM_NONE // number of types
+};
+
+struct AsmData;
+
+AsmType detectType(cashew::Ref node, AsmData *asmData=nullptr, bool inVarDef=false);
+
+struct AsmData {
+  struct Local {
+    Local() {}
+    Local(AsmType type, bool param) : type(type), param(param) {}
+    AsmType type;
+    bool param; // false if a var
+  };
+  typedef std::unordered_map<cashew::IString, Local> Locals;
+
+  Locals locals;
+  std::vector<cashew::IString> params; // in order
+  std::vector<cashew::IString> vars; // in order
+  AsmType ret;
+
+  cashew::Ref func;
+
+  AsmType getType(const cashew::IString& name) {
+    auto ret = locals.find(name);
+    if (ret != locals.end()) return ret->second.type;
+    return ASM_NONE;
+  }
+  void setType(const cashew::IString& name, AsmType type) {
+    locals[name].type = type;
+  }
+
+  bool isLocal(const cashew::IString& name) {
+    return locals.count(name) > 0;
+  }
+  bool isParam(const cashew::IString& name) {
+    return isLocal(name) && locals[name].param;
+  }
+  bool isVar(const cashew::IString& name) {
+    return isLocal(name) && !locals[name].param;
+  }
+
+  AsmData() {} // if you want to fill in the data yourself
+  AsmData(cashew::Ref f); // if you want to read data from f, and modify it as you go (parallel to denormalize)
+
+  void denormalize();
+
+  void addParam(cashew::IString name, AsmType type) {
+    locals[name] = Local(type, true);
+    params.push_back(name);
+  }
+  void addVar(cashew::IString name, AsmType type) {
+    locals[name] = Local(type, false);
+    vars.push_back(name);
+  }
+
+  void deleteVar(cashew::IString name) {
+    locals.erase(name);
+    for (size_t i = 0; i < vars.size(); i++) {
+      if (vars[i] == name) {
+        vars.erase(vars.begin() + i);
+        break;
+      }
+    }
+  }
+};
+
+bool isInteger(double x);
+
+bool isInteger32(double x);
+
+extern cashew::IString ASM_FLOAT_ZERO;
+
+extern cashew::IString SIMD_INT8X16_CHECK,
+               SIMD_INT16X8_CHECK,
+               SIMD_INT32X4_CHECK,
+               SIMD_FLOAT32X4_CHECK,
+               SIMD_FLOAT64X2_CHECK;
+
+int parseInt(const char *str);
+
+struct HeapInfo {
+  bool valid, unsign, floaty;
+  int bits;
+  AsmType type;
+};
+
+HeapInfo parseHeap(const char *name);
+
+#endif // __optimizer_h__
+
-- 
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