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/*
* Copyright 2015 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#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, cashew::IString minifiedFround=cashew::IString());
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);
int32_t toInteger32(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);
enum AsmSign {
ASM_FLEXIBLE = 0, // small constants can be signed or unsigned, variables are also flexible
ASM_SIGNED = 1,
ASM_UNSIGNED = 2,
ASM_NONSIGNED = 3,
};
extern AsmSign detectSign(cashew::Ref node, cashew::IString minifiedFround);
inline cashew::Ref deStat(cashew::Ref node) {
if (node[0] == cashew::STAT) return node[1];
return node;
}
cashew::Ref makeAsmCoercedZero(AsmType type);
cashew::Ref makeAsmCoercion(cashew::Ref node, AsmType type);
cashew::Ref makeSigning(cashew::Ref node, AsmSign sign);
#endif // __optimizer_h__
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