1dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#define MINIMAL_STDERR_OUTPUT 2dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 3dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Analysis/Passes.h" 4dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/ExecutionEngine/ExecutionEngine.h" 5dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/ExecutionEngine/MCJIT.h" 6dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/ExecutionEngine/ObjectCache.h" 7dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/ExecutionEngine/SectionMemoryManager.h" 8dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IR/DataLayout.h" 9dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IR/DerivedTypes.h" 10dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IR/IRBuilder.h" 11dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IR/LLVMContext.h" 12dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IR/Module.h" 1336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/IR/Verifier.h" 14dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/IRReader/IRReader.h" 15dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/PassManager.h" 16dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Support/CommandLine.h" 17dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Support/FileSystem.h" 18dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Support/Path.h" 19dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Support/SourceMgr.h" 20dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Support/TargetSelect.h" 2136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/Support/raw_ostream.h" 22dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include "llvm/Transforms/Scalar.h" 23e3ba15c794839abe076e3e2bdf6c626396a19d4dWill Dietz#include <cctype> 24dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include <cstdio> 25dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include <map> 26dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include <string> 27dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#include <vector> 28dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorusing namespace llvm; 29dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 30dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 31dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Command-line options 32dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 33dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 34dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorcl::opt<std::string> 35dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorInputIR("input-IR", 36dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor cl::desc("Specify the name of an IR file to load for function definitions"), 37dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor cl::value_desc("input IR file name")); 38dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 39dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorcl::opt<bool> 40dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorUseObjectCache("use-object-cache", 41dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor cl::desc("Enable use of the MCJIT object caching"), 42dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor cl::init(false)); 43dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 44dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 45dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Lexer 46dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 47dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 48dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// The lexer returns tokens [0-255] if it is an unknown character, otherwise one 49dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// of these for known things. 50dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorenum Token { 51dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_eof = -1, 52dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 53dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // commands 54dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_def = -2, tok_extern = -3, 55dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 56dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // primary 57dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_identifier = -4, tok_number = -5, 58dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 59dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // control 60dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_if = -6, tok_then = -7, tok_else = -8, 61dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_for = -9, tok_in = -10, 62dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 63dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // operators 64dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_binary = -11, tok_unary = -12, 65dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 66dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // var definition 67dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor tok_var = -13 68dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 69dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 70dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic std::string IdentifierStr; // Filled in if tok_identifier 71dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic double NumVal; // Filled in if tok_number 72dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 73dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// gettok - Return the next token from standard input. 74dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic int gettok() { 75dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor static int LastChar = ' '; 76dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 77dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Skip any whitespace. 78dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (isspace(LastChar)) 79dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LastChar = getchar(); 80dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 81dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]* 82dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor IdentifierStr = LastChar; 83dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (isalnum((LastChar = getchar()))) 84dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor IdentifierStr += LastChar; 85dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 86dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "def") return tok_def; 87dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "extern") return tok_extern; 88dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "if") return tok_if; 89dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "then") return tok_then; 90dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "else") return tok_else; 91dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "for") return tok_for; 92dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "in") return tok_in; 93dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "binary") return tok_binary; 94dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "unary") return tok_unary; 95dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (IdentifierStr == "var") return tok_var; 96dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return tok_identifier; 97dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 98dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 99dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+ 100dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string NumStr; 101dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor do { 102dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NumStr += LastChar; 103dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LastChar = getchar(); 104dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } while (isdigit(LastChar) || LastChar == '.'); 105dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 106dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NumVal = strtod(NumStr.c_str(), 0); 107dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return tok_number; 108dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 109dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 110dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (LastChar == '#') { 111dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Comment until end of line. 112dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor do LastChar = getchar(); 113dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (LastChar != EOF && LastChar != '\n' && LastChar != '\r'); 114dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 115dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (LastChar != EOF) 116dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return gettok(); 117dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 118dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 119dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Check for end of file. Don't eat the EOF. 120dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (LastChar == EOF) 121dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return tok_eof; 122dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 123dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Otherwise, just return the character as its ascii value. 124dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int ThisChar = LastChar; 125dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LastChar = getchar(); 126dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ThisChar; 127dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 128dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 129dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 130dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Abstract Syntax Tree (aka Parse Tree) 131dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 132dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 133dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ExprAST - Base class for all expression nodes. 134dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass ExprAST { 135dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 136dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual ~ExprAST() {} 137dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen() = 0; 138dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 139dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 140dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// NumberExprAST - Expression class for numeric literals like "1.0". 141dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass NumberExprAST : public ExprAST { 142dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor double Val; 143dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 144dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NumberExprAST(double val) : Val(val) {} 145dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 146dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 147dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 148dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// VariableExprAST - Expression class for referencing a variable, like "a". 149dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass VariableExprAST : public ExprAST { 150dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string Name; 151dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 152dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor VariableExprAST(const std::string &name) : Name(name) {} 153dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string &getName() const { return Name; } 154dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 155dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 156dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 157dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// UnaryExprAST - Expression class for a unary operator. 158dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass UnaryExprAST : public ExprAST { 159dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char Opcode; 160dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Operand; 161dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 162dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor UnaryExprAST(char opcode, ExprAST *operand) 163dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Opcode(opcode), Operand(operand) {} 164dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 165dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 166dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 167dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// BinaryExprAST - Expression class for a binary operator. 168dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass BinaryExprAST : public ExprAST { 169dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char Op; 170dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *LHS, *RHS; 171dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 172dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs) 173dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Op(op), LHS(lhs), RHS(rhs) {} 174dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 175dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 176dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 177dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// CallExprAST - Expression class for function calls. 178dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass CallExprAST : public ExprAST { 179dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string Callee; 180dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<ExprAST*> Args; 181dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 182dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor CallExprAST(const std::string &callee, std::vector<ExprAST*> &args) 183dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Callee(callee), Args(args) {} 184dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 185dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 186dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 187dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// IfExprAST - Expression class for if/then/else. 188dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass IfExprAST : public ExprAST { 189dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Cond, *Then, *Else; 190dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 191dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor IfExprAST(ExprAST *cond, ExprAST *then, ExprAST *_else) 192dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Cond(cond), Then(then), Else(_else) {} 193dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 194dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 195dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 196dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ForExprAST - Expression class for for/in. 197dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass ForExprAST : public ExprAST { 198dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string VarName; 199dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Start, *End, *Step, *Body; 200dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 201dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ForExprAST(const std::string &varname, ExprAST *start, ExprAST *end, 202dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *step, ExprAST *body) 203dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : VarName(varname), Start(start), End(end), Step(step), Body(body) {} 204dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 205dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 206dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 207dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// VarExprAST - Expression class for var/in 208dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass VarExprAST : public ExprAST { 209dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<std::pair<std::string, ExprAST*> > VarNames; 210dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Body; 211dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 212dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor VarExprAST(const std::vector<std::pair<std::string, ExprAST*> > &varnames, 213dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *body) 214dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : VarNames(varnames), Body(body) {} 215dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 216dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual Value *Codegen(); 217dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 218dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 219dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// PrototypeAST - This class represents the "prototype" for a function, 220dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// which captures its argument names as well as if it is an operator. 221dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass PrototypeAST { 222dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string Name; 223dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<std::string> Args; 224dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool isOperator; 225dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor unsigned Precedence; // Precedence if a binary op. 226dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 227dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PrototypeAST(const std::string &name, const std::vector<std::string> &args, 228dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool isoperator = false, unsigned prec = 0) 229dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Name(name), Args(args), isOperator(isoperator), Precedence(prec) {} 230dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 231dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool isUnaryOp() const { return isOperator && Args.size() == 1; } 232dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool isBinaryOp() const { return isOperator && Args.size() == 2; } 233dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 234dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char getOperatorName() const { 235dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor assert(isUnaryOp() || isBinaryOp()); 236dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Name[Name.size()-1]; 237dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 238dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 239dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor unsigned getBinaryPrecedence() const { return Precedence; } 240dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 241dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *Codegen(); 242dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 243dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void CreateArgumentAllocas(Function *F); 244dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 245dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 246dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// FunctionAST - This class represents a function definition itself. 247dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass FunctionAST { 248dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PrototypeAST *Proto; 249dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Body; 250dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 251dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FunctionAST(PrototypeAST *proto, ExprAST *body) 252dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor : Proto(proto), Body(body) {} 253dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 254dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *Codegen(); 255dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 256dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 257dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 258dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Parser 259dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 260dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 261dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current 262dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// token the parser is looking at. getNextToken reads another token from the 263dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// lexer and updates CurTok with its results. 264dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic int CurTok; 265dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic int getNextToken() { 266dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return CurTok = gettok(); 267dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 268dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 269dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// BinopPrecedence - This holds the precedence for each binary operator that is 270dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// defined. 271dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic std::map<char, int> BinopPrecedence; 272dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 273dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// GetTokPrecedence - Get the precedence of the pending binary operator token. 274dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic int GetTokPrecedence() { 275dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!isascii(CurTok)) 276dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return -1; 277dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 278dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Make sure it's a declared binop. 279dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int TokPrec = BinopPrecedence[CurTok]; 280dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (TokPrec <= 0) return -1; 281dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return TokPrec; 282dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 283dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 284dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// Error* - These are little helper functions for error handling. 285dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorExprAST *Error(const char *Str) { fprintf(stderr, "Error: %s\n", Str);return 0;} 286dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorPrototypeAST *ErrorP(const char *Str) { Error(Str); return 0; } 287dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorFunctionAST *ErrorF(const char *Str) { Error(Str); return 0; } 288dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 289dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseExpression(); 290dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 291dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// identifierexpr 292dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= identifier 293dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= identifier '(' expression* ')' 294dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseIdentifierExpr() { 295dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string IdName = IdentifierStr; 296dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 297dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat identifier. 298dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 299dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != '(') // Simple variable ref. 300dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new VariableExprAST(IdName); 301dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 302dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Call. 303dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat ( 304dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<ExprAST*> Args; 305dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ')') { 306dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (1) { 307dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Arg = ParseExpression(); 308dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!Arg) return 0; 309dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Args.push_back(Arg); 310dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 311dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok == ')') break; 312dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 313dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ',') 314dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("Expected ')' or ',' in argument list"); 315dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 316dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 317dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 318dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 319dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Eat the ')'. 320dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 321dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 322dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new CallExprAST(IdName, Args); 323dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 324dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 325dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// numberexpr ::= number 326dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseNumberExpr() { 327dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Result = new NumberExprAST(NumVal); 328dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // consume the number 329dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Result; 330dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 331dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 332dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// parenexpr ::= '(' expression ')' 333dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseParenExpr() { 334dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat (. 335dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *V = ParseExpression(); 336dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!V) return 0; 337dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 338dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ')') 339dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected ')'"); 340dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat ). 341dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return V; 342dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 343dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 344dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ifexpr ::= 'if' expression 'then' expression 'else' expression 345dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseIfExpr() { 346dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the if. 347dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 348dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // condition. 349dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Cond = ParseExpression(); 350dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!Cond) return 0; 351dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 352dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_then) 353dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected then"); 354dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the then 355dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 356dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Then = ParseExpression(); 357dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Then == 0) return 0; 358dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 359dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_else) 360dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected else"); 361dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 362dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 363dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 364dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Else = ParseExpression(); 365dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!Else) return 0; 366dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 367dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new IfExprAST(Cond, Then, Else); 368dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 369dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 370dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression 371dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseForExpr() { 372dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the for. 373dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 374dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_identifier) 375dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected identifier after for"); 376dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 377dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string IdName = IdentifierStr; 378dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat identifier. 379dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 380dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != '=') 381dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected '=' after for"); 382dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat '='. 383dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 384dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 385dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Start = ParseExpression(); 386dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Start == 0) return 0; 387dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ',') 388dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected ',' after for start value"); 389dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 390dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 391dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *End = ParseExpression(); 392dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (End == 0) return 0; 393dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 394dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // The step value is optional. 395dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Step = 0; 396dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok == ',') { 397dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 398dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Step = ParseExpression(); 399dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Step == 0) return 0; 400dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 401dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 402dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_in) 403dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected 'in' after for"); 404dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat 'in'. 405dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 406dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Body = ParseExpression(); 407dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Body == 0) return 0; 408dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 409dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new ForExprAST(IdName, Start, End, Step, Body); 410dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 411dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 412dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// varexpr ::= 'var' identifier ('=' expression)? 413dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// (',' identifier ('=' expression)?)* 'in' expression 414dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseVarExpr() { 415dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the var. 416dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 417dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<std::pair<std::string, ExprAST*> > VarNames; 418dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 419dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // At least one variable name is required. 420dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_identifier) 421dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected identifier after var"); 422dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 423dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (1) { 424dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string Name = IdentifierStr; 425dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat identifier. 426dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 427dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Read the optional initializer. 428dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Init = 0; 429dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok == '=') { 430dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the '='. 431dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 432dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Init = ParseExpression(); 433dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Init == 0) return 0; 434dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 435dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 436dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor VarNames.push_back(std::make_pair(Name, Init)); 437dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 438dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // End of var list, exit loop. 439dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ',') break; 440dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat the ','. 441dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 442dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_identifier) 443dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected identifier list after var"); 444dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 445dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 446dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // At this point, we have to have 'in'. 447dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != tok_in) 448dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Error("expected 'in' keyword after 'var'"); 449dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat 'in'. 450dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 451dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Body = ParseExpression(); 452dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Body == 0) return 0; 453dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 454dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new VarExprAST(VarNames, Body); 455dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 456dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 457dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// primary 458dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= identifierexpr 459dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= numberexpr 460dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= parenexpr 461dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= ifexpr 462dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= forexpr 463dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= varexpr 464dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParsePrimary() { 465dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor switch (CurTok) { 466dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor default: return Error("unknown token when expecting an expression"); 467dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_identifier: return ParseIdentifierExpr(); 468dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_number: return ParseNumberExpr(); 469dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '(': return ParseParenExpr(); 470dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_if: return ParseIfExpr(); 471dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_for: return ParseForExpr(); 472dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_var: return ParseVarExpr(); 473dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 474dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 475dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 476dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// unary 477dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= primary 478dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= '!' unary 479dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseUnary() { 480dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If the current token is not an operator, it must be a primary expr. 481dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!isascii(CurTok) || CurTok == '(' || CurTok == ',') 482dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ParsePrimary(); 483dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 484dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If this is a unary operator, read it. 485dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int Opc = CurTok; 486dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 487dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ExprAST *Operand = ParseUnary()) 488dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new UnaryExprAST(Opc, Operand); 489dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 490dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 491dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 492dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// binoprhs 493dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= ('+' unary)* 494dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) { 495dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If this is a binop, find its precedence. 496dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (1) { 497dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int TokPrec = GetTokPrecedence(); 498dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 499dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If this is a binop that binds at least as tightly as the current binop, 500dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // consume it, otherwise we are done. 501dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (TokPrec < ExprPrec) 502dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return LHS; 503dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 504dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Okay, we know this is a binop. 505dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int BinOp = CurTok; 506dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat binop 507dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 508dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Parse the unary expression after the binary operator. 509dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *RHS = ParseUnary(); 510dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!RHS) return 0; 511dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 512dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If BinOp binds less tightly with RHS than the operator after RHS, let 513dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // the pending operator take RHS as its LHS. 514dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor int NextPrec = GetTokPrecedence(); 515dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (TokPrec < NextPrec) { 516dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor RHS = ParseBinOpRHS(TokPrec+1, RHS); 517dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (RHS == 0) return 0; 518dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 519dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 520dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Merge LHS/RHS. 521dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LHS = new BinaryExprAST(BinOp, LHS, RHS); 522dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 523dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 524dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 525dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// expression 526dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= unary binoprhs 527dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// 528dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic ExprAST *ParseExpression() { 529dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *LHS = ParseUnary(); 530dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!LHS) return 0; 531dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 532dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ParseBinOpRHS(0, LHS); 533dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 534dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 535dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// prototype 536dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= id '(' id* ')' 537dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= binary LETTER number? (id, id) 538dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// ::= unary LETTER (id) 539dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic PrototypeAST *ParsePrototype() { 540dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string FnName; 541dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 542dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary. 543dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor unsigned BinaryPrecedence = 30; 544dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 545dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor switch (CurTok) { 546dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor default: 547dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Expected function name in prototype"); 548dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_identifier: 549dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName = IdentifierStr; 550dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Kind = 0; 551dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 552dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor break; 553dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_unary: 554dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 555dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!isascii(CurTok)) 556dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Expected unary operator"); 557dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName = "unary"; 558dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName += (char)CurTok; 559dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Kind = 1; 560dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 561dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor break; 562dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_binary: 563dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 564dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!isascii(CurTok)) 565dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Expected binary operator"); 566dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName = "binary"; 567dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName += (char)CurTok; 568dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Kind = 2; 569dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 570dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 571dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Read the precedence if present. 572dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok == tok_number) { 573dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (NumVal < 1 || NumVal > 100) 574dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Invalid precedecnce: must be 1..100"); 575dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinaryPrecedence = (unsigned)NumVal; 576dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 577dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 578dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor break; 579dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 580dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 581dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != '(') 582dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Expected '(' in prototype"); 583dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 584dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<std::string> ArgNames; 585dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (getNextToken() == tok_identifier) 586dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ArgNames.push_back(IdentifierStr); 587dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CurTok != ')') 588dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Expected ')' in prototype"); 589dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 590dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // success. 591dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat ')'. 592dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 593dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Verify right number of names for operator. 594dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Kind && ArgNames.size() != Kind) 595dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorP("Invalid number of operands for operator"); 596dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 597dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence); 598dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 599dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 600dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// definition ::= 'def' prototype expression 601dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic FunctionAST *ParseDefinition() { 602dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat def. 603dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PrototypeAST *Proto = ParsePrototype(); 604dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Proto == 0) return 0; 605dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 606dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ExprAST *E = ParseExpression()) 607dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new FunctionAST(Proto, E); 608dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 609dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 610dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 611dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// toplevelexpr ::= expression 612dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic FunctionAST *ParseTopLevelExpr() { 613dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ExprAST *E = ParseExpression()) { 614dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Make an anonymous proto. 615dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PrototypeAST *Proto = new PrototypeAST("", std::vector<std::string>()); 616dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return new FunctionAST(Proto, E); 617dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 618dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 619dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 620dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 621dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// external ::= 'extern' prototype 622dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic PrototypeAST *ParseExtern() { 623dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); // eat extern. 624dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ParsePrototype(); 625dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 626dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 627dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 628dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Quick and dirty hack 629dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 630dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 631dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// FIXME: Obviously we can do better than this 632dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstd::string GenerateUniqueName(const char *root) 633dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 634dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor static int i = 0; 635dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char s[16]; 636dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sprintf(s, "%s%d", root, i++); 637dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string S = s; 638dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return S; 639dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 640dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 641dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstd::string MakeLegalFunctionName(std::string Name) 642dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 643dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string NewName; 644dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!Name.length()) 645dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return GenerateUniqueName("anon_func_"); 646dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 647dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Start with what we have 648dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NewName = Name; 649dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 650dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look for a numberic first character 651dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (NewName.find_first_of("0123456789") == 0) { 652dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NewName.insert(0, 1, 'n'); 653dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 654dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 655dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Replace illegal characters with their ASCII equivalent 656dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string legal_elements = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; 657dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor size_t pos; 658dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while ((pos = NewName.find_first_not_of(legal_elements)) != std::string::npos) { 659dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char old_c = NewName.at(pos); 660dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char new_str[16]; 661dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sprintf(new_str, "%d", (int)old_c); 662dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NewName = NewName.replace(pos, 1, new_str); 663dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 664dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 665dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NewName; 666dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 667dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 668dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 669dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// MCJIT object cache class 670dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 671dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 672dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass MCJITObjectCache : public ObjectCache { 673dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 674dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MCJITObjectCache() { 675dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Set IR cache directory 676dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sys::fs::current_path(CacheDir); 677dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sys::path::append(CacheDir, "toy_object_cache"); 678dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 679dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 680dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual ~MCJITObjectCache() { 681dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 682dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 683dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual void notifyObjectCompiled(const Module *M, const MemoryBuffer *Obj) { 684dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Get the ModuleID 685dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string ModuleID = M->getModuleIdentifier(); 686dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 687dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we've flagged this as an IR file, cache it 688dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (0 == ModuleID.compare(0, 3, "IR:")) { 689dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string IRFileName = ModuleID.substr(3); 690dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor SmallString<128>IRCacheFile = CacheDir; 691dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sys::path::append(IRCacheFile, IRFileName); 692dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!sys::fs::exists(CacheDir.str()) && sys::fs::create_directory(CacheDir.str())) { 693dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "Unable to create cache directory\n"); 694dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return; 695dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 696dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string ErrStr; 697dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor raw_fd_ostream IRObjectFile(IRCacheFile.c_str(), ErrStr, raw_fd_ostream::F_Binary); 698dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor IRObjectFile << Obj->getBuffer(); 699dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 700dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 701dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 702dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // MCJIT will call this function before compiling any module 703dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // MCJIT takes ownership of both the MemoryBuffer object and the memory 704dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // to which it refers. 705dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual MemoryBuffer* getObject(const Module* M) { 706dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Get the ModuleID 707dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string ModuleID = M->getModuleIdentifier(); 708dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 709dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we've flagged this as an IR file, cache it 710dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (0 == ModuleID.compare(0, 3, "IR:")) { 711dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string IRFileName = ModuleID.substr(3); 712dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor SmallString<128> IRCacheFile = CacheDir; 713dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sys::path::append(IRCacheFile, IRFileName); 714dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!sys::fs::exists(IRCacheFile.str())) { 715dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // This file isn't in our cache 716dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 717dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 71836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::unique_ptr<MemoryBuffer> IRObjectBuffer; 719dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MemoryBuffer::getFile(IRCacheFile.c_str(), IRObjectBuffer, -1, false); 720dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // MCJIT will want to write into this buffer, and we don't want that 721dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // because the file has probably just been mmapped. Instead we make 722dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // a copy. The filed-based buffer will be released when it goes 723dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // out of scope. 724dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return MemoryBuffer::getMemBufferCopy(IRObjectBuffer->getBuffer()); 725dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 726dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 727dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 728dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 729dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 730dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorprivate: 731dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor SmallString<128> CacheDir; 732dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 733dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 734dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 735dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// MCJIT helper class 736dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 737dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 738dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass MCJITHelper 739dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 740dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 741dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MCJITHelper(LLVMContext& C) : Context(C), OpenModule(NULL) {} 742dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ~MCJITHelper(); 743dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 744dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *getFunction(const std::string FnName); 745dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module *getModuleForNewFunction(); 746dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *getPointerToFunction(Function* F); 747dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *getPointerToNamedFunction(const std::string &Name); 748dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExecutionEngine *compileModule(Module *M); 749dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void closeCurrentModule(); 750dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void addModule(Module *M); 751dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void dump(); 752dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 753dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorprivate: 754dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor typedef std::vector<Module*> ModuleVector; 755dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 756dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LLVMContext &Context; 757dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module *OpenModule; 758dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector Modules; 759dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::map<Module *, ExecutionEngine *> EngineMap; 760dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MCJITObjectCache OurObjectCache; 761dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 762dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 763dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorclass HelpingMemoryManager : public SectionMemoryManager 764dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 765dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor HelpingMemoryManager(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION; 766dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void operator=(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION; 767dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 768dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorpublic: 769dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {} 770dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual ~HelpingMemoryManager() {} 771dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 772dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// This method returns the address of the specified function. 773dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// Our implementation will attempt to find functions in other 774dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// modules associated with the MCJITHelper to cross link functions 775dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// from one generated module to another. 776dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// 777dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// If \p AbortOnFailure is false and no function with the given name is 778dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// found, this function returns a null pointer. Otherwise, it prints a 779dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor /// message to stderr and aborts. 780dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor virtual void *getPointerToNamedFunction(const std::string &Name, 781dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool AbortOnFailure = true); 782dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorprivate: 783dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MCJITHelper *MasterHelper; 784dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor}; 785dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 786dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid *HelpingMemoryManager::getPointerToNamedFunction(const std::string &Name, 787dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor bool AbortOnFailure) 788dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 789dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Try the standard symbol resolution first, but ask it not to abort. 790dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *pfn = SectionMemoryManager::getPointerToNamedFunction(Name, false); 791dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (pfn) 792dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return pfn; 793dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 794dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor pfn = MasterHelper->getPointerToNamedFunction(Name); 795dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!pfn && AbortOnFailure) 796dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor report_fatal_error("Program used external function '" + Name + 797dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "' which could not be resolved!"); 798dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return pfn; 799dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 800dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 801dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorMCJITHelper::~MCJITHelper() 802dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 803dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Walk the vector of modules. 804dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator it, end; 805dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = Modules.begin(), end = Modules.end(); 806dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor it != end; ++it) { 807dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // See if we have an execution engine for this module. 808dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::map<Module*, ExecutionEngine*>::iterator mapIt = EngineMap.find(*it); 809dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we have an EE, the EE owns the module so just delete the EE. 810dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (mapIt != EngineMap.end()) { 811dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor delete mapIt->second; 812dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 813dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Otherwise, we still own the module. Delete it now. 814dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor delete *it; 815dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 816dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 817dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 818dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 819dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorFunction *MCJITHelper::getFunction(const std::string FnName) { 820dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator begin = Modules.begin(); 821dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator end = Modules.end(); 822dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator it; 823dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = begin; it != end; ++it) { 824dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *F = (*it)->getFunction(FnName); 825dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (F) { 826dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (*it == OpenModule) 827dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return F; 828dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 829dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor assert(OpenModule != NULL); 830dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 831dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // This function is in a module that has already been JITed. 832dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // We need to generate a new prototype for external linkage. 833dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *PF = OpenModule->getFunction(FnName); 834dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (PF && !PF->empty()) { 835dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ErrorF("redefinition of function across modules"); 836dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 837dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 838dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 839dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we don't have a prototype yet, create one. 840dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!PF) 841dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PF = Function::Create(F->getFunctionType(), 842dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function::ExternalLinkage, 843dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FnName, 844dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor OpenModule); 845dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return PF; 846dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 847dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 848dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 849dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 850dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 851dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorModule *MCJITHelper::getModuleForNewFunction() { 852dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we have a Module that hasn't been JITed, use that. 853dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (OpenModule) 854dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return OpenModule; 855dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 856dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Otherwise create a new Module. 857dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string ModName = GenerateUniqueName("mcjit_module_"); 858dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module *M = new Module(ModName, Context); 859dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Modules.push_back(M); 860dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor OpenModule = M; 861dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return M; 862dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 863dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 864dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid *MCJITHelper::getPointerToFunction(Function* F) { 865dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look for this function in an existing module 866dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator begin = Modules.begin(); 867dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator end = Modules.end(); 868dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator it; 869dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string FnName = F->getName(); 870dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = begin; it != end; ++it) { 871dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *MF = (*it)->getFunction(FnName); 872dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (MF == F) { 873dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::map<Module*, ExecutionEngine*>::iterator eeIt = EngineMap.find(*it); 874dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (eeIt != EngineMap.end()) { 875dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *P = eeIt->second->getPointerToFunction(F); 876dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (P) 877dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return P; 878dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 879dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExecutionEngine *EE = compileModule(*it); 880dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *P = EE->getPointerToFunction(F); 881dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (P) 882dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return P; 883dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 884dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 885dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 886dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 887dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 888dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 889dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid MCJITHelper::closeCurrentModule() { 890dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor OpenModule = NULL; 891dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 892dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 893dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorExecutionEngine *MCJITHelper::compileModule(Module *M) { 894dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (M == OpenModule) 895dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor closeCurrentModule(); 896dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 897dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string ErrStr; 898dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExecutionEngine *NewEngine = EngineBuilder(M) 899dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor .setErrorStr(&ErrStr) 900dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor .setUseMCJIT(true) 901dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor .setMCJITMemoryManager(new HelpingMemoryManager(this)) 902dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor .create(); 903dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!NewEngine) { 904dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str()); 905dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor exit(1); 906dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 907dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 908dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (UseObjectCache) 909dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NewEngine->setObjectCache(&OurObjectCache); 910dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 911dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Get the ModuleID so we can identify IR input files 912dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string ModuleID = M->getModuleIdentifier(); 913dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 914dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If we've flagged this as an IR file, it doesn't need function passes run. 915dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (0 != ModuleID.compare(0, 3, "IR:")) { 916dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create a function pass manager for this engine 917dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FunctionPassManager *FPM = new FunctionPassManager(M); 918dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 919dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Set up the optimizer pipeline. Start with registering info about how the 920dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // target lays out data structures. 921dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(new DataLayout(*NewEngine->getDataLayout())); 922dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Provide basic AliasAnalysis support for GVN. 923dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createBasicAliasAnalysisPass()); 924dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Promote allocas to registers. 925dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createPromoteMemoryToRegisterPass()); 926dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Do simple "peephole" optimizations and bit-twiddling optzns. 927dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createInstructionCombiningPass()); 928dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Reassociate expressions. 929dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createReassociatePass()); 930dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Eliminate Common SubExpressions. 931dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createGVNPass()); 932dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Simplify the control flow graph (deleting unreachable blocks, etc). 933dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->add(createCFGSimplificationPass()); 934dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->doInitialization(); 935dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 936dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // For each function in the module 937dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module::iterator it; 938dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module::iterator end = M->end(); 939dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = M->begin(); it != end; ++it) { 940dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Run the FPM on this function 941dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FPM->run(*it); 942dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 943dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 944dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // We don't need this anymore 945dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor delete FPM; 946dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 947dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 948dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Store this engine 949dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor EngineMap[M] = NewEngine; 950dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NewEngine->finalizeObject(); 951dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 952dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NewEngine; 953dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 954dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 955dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid *MCJITHelper::getPointerToNamedFunction(const std::string &Name) 956dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 957dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look for the functions in our modules, compiling only as necessary 958dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator begin = Modules.begin(); 959dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator end = Modules.end(); 960dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator it; 961dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = begin; it != end; ++it) { 962dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *F = (*it)->getFunction(Name); 963dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (F && !F->empty()) { 964dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::map<Module*, ExecutionEngine*>::iterator eeIt = EngineMap.find(*it); 965dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (eeIt != EngineMap.end()) { 966dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *P = eeIt->second->getPointerToFunction(F); 967dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (P) 968dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return P; 969dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 970dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExecutionEngine *EE = compileModule(*it); 971dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *P = EE->getPointerToFunction(F); 972dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (P) 973dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return P; 974dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 975dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 976dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 977dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 978dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 979dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 980dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid MCJITHelper::addModule(Module* M) { 981dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Modules.push_back(M); 982dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 983dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 984dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid MCJITHelper::dump() 985dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor{ 986dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator begin = Modules.begin(); 987dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator end = Modules.end(); 988dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ModuleVector::iterator it; 989dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (it = begin; it != end; ++it) 990dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor (*it)->dump(); 991dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 992dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 993dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 994dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Code Generation 995dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 996dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 997dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic MCJITHelper *TheHelper; 998dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic IRBuilder<> Builder(getGlobalContext()); 999dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic std::map<std::string, AllocaInst*> NamedValues; 1000dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1001dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *ErrorV(const char *Str) { Error(Str); return 0; } 1002dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1003dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of 1004dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// the function. This is used for mutable variables etc. 1005dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic AllocaInst *CreateEntryBlockAlloca(Function *TheFunction, 1006dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string &VarName) { 1007dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor IRBuilder<> TmpB(&TheFunction->getEntryBlock(), 1008dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheFunction->getEntryBlock().begin()); 1009dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0, 1010dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor VarName.c_str()); 1011dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1012dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1013dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *NumberExprAST::Codegen() { 1014dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ConstantFP::get(getGlobalContext(), APFloat(Val)); 1015dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1016dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1017dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *VariableExprAST::Codegen() { 1018dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look this variable up in the function. 1019dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *V = NamedValues[Name]; 1020dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char ErrStr[256]; 1021dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sprintf(ErrStr, "Unknown variable name %s", Name.c_str()); 1022dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (V == 0) return ErrorV(ErrStr); 1023dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1024dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Load the value. 1025dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Builder.CreateLoad(V, Name.c_str()); 1026dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1027dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1028dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *UnaryExprAST::Codegen() { 1029dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *OperandV = Operand->Codegen(); 1030dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (OperandV == 0) return 0; 1031dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1032dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("unary")+Opcode)); 1033dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (F == 0) 1034dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorV("Unknown unary operator"); 1035dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1036dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Builder.CreateCall(F, OperandV, "unop"); 1037dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1038dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1039dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *BinaryExprAST::Codegen() { 1040dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Special case '=' because we don't want to emit the LHS as an expression. 1041dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Op == '=') { 1042dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Assignment requires the LHS to be an identifier. 1043dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor VariableExprAST *LHSE = reinterpret_cast<VariableExprAST*>(LHS); 1044dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!LHSE) 1045dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorV("destination of '=' must be a variable"); 1046dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Codegen the RHS. 1047dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *Val = RHS->Codegen(); 1048dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Val == 0) return 0; 1049dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1050dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look up the name. 1051dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *Variable = NamedValues[LHSE->getName()]; 1052dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Variable == 0) return ErrorV("Unknown variable name"); 1053dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1054dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateStore(Val, Variable); 1055dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Val; 1056dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1057dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1058dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *L = LHS->Codegen(); 1059dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *R = RHS->Codegen(); 1060dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (L == 0 || R == 0) return 0; 1061dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1062dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor switch (Op) { 1063dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '+': return Builder.CreateFAdd(L, R, "addtmp"); 1064dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '-': return Builder.CreateFSub(L, R, "subtmp"); 1065dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '*': return Builder.CreateFMul(L, R, "multmp"); 1066dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '/': return Builder.CreateFDiv(L, R, "divtmp"); 1067dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case '<': 1068dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor L = Builder.CreateFCmpULT(L, R, "cmptmp"); 1069dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Convert bool 0/1 to double 0.0 or 1.0 1070dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()), 1071dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "booltmp"); 1072dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor default: break; 1073dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1074dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1075dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If it wasn't a builtin binary operator, it must be a user defined one. Emit 1076dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // a call to it. 1077dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("binary")+Op)); 1078dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor assert(F && "binary operator not found!"); 1079dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1080dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *Ops[] = { L, R }; 1081dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Builder.CreateCall(F, Ops, "binop"); 1082dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1083dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1084dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *CallExprAST::Codegen() { 1085dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Look up the name in the global module table. 1086dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *CalleeF = TheHelper->getFunction(Callee); 1087dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CalleeF == 0) 1088dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorV("Unknown function referenced"); 1089dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1090dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If argument mismatch error. 1091dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CalleeF->arg_size() != Args.size()) 1092dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return ErrorV("Incorrect # arguments passed"); 1093dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1094dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<Value*> ArgsV; 1095dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (unsigned i = 0, e = Args.size(); i != e; ++i) { 1096dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ArgsV.push_back(Args[i]->Codegen()); 1097dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ArgsV.back() == 0) return 0; 1098dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1099dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1100dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Builder.CreateCall(CalleeF, ArgsV, "calltmp"); 1101dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1102dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1103dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *IfExprAST::Codegen() { 1104dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *CondV = Cond->Codegen(); 1105dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (CondV == 0) return 0; 1106dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1107dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Convert condition to a bool by comparing equal to 0.0. 1108dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor CondV = Builder.CreateFCmpONE(CondV, 1109dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ConstantFP::get(getGlobalContext(), APFloat(0.0)), 1110dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "ifcond"); 1111dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1112dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *TheFunction = Builder.GetInsertBlock()->getParent(); 1113dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1114dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create blocks for the then and else cases. Insert the 'then' block at the 1115dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // end of the function. 1116dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction); 1117dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else"); 1118dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont"); 1119dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1120dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateCondBr(CondV, ThenBB, ElseBB); 1121dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1122dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit then value. 1123dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(ThenBB); 1124dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1125dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *ThenV = Then->Codegen(); 1126dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ThenV == 0) return 0; 1127dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1128dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateBr(MergeBB); 1129dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Codegen of 'Then' can change the current block, update ThenBB for the PHI. 1130dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ThenBB = Builder.GetInsertBlock(); 1131dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1132dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit else block. 1133dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheFunction->getBasicBlockList().push_back(ElseBB); 1134dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(ElseBB); 1135dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1136dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *ElseV = Else->Codegen(); 1137dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (ElseV == 0) return 0; 1138dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1139dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateBr(MergeBB); 1140dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Codegen of 'Else' can change the current block, update ElseBB for the PHI. 1141dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ElseBB = Builder.GetInsertBlock(); 1142dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1143dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit merge block. 1144dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheFunction->getBasicBlockList().push_back(MergeBB); 1145dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(MergeBB); 1146dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, 1147dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "iftmp"); 1148dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1149dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PN->addIncoming(ThenV, ThenBB); 1150dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor PN->addIncoming(ElseV, ElseBB); 1151dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return PN; 1152dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1153dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1154dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *ForExprAST::Codegen() { 1155dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Output this as: 1156dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // var = alloca double 1157dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // ... 1158dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // start = startexpr 1159dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // store start -> var 1160dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // goto loop 1161dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // loop: 1162dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // ... 1163dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // bodyexpr 1164dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // ... 1165dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // loopend: 1166dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // step = stepexpr 1167dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // endcond = endexpr 1168dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // 1169dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // curvar = load var 1170dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // nextvar = curvar + step 1171dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // store nextvar -> var 1172dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // br endcond, loop, endloop 1173dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // outloop: 1174dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1175dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *TheFunction = Builder.GetInsertBlock()->getParent(); 1176dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1177dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create an alloca for the variable in the entry block. 1178dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName); 1179dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1180dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit the start code first, without 'variable' in scope. 1181dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *StartVal = Start->Codegen(); 1182dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (StartVal == 0) return 0; 1183dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1184dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Store the value into the alloca. 1185dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateStore(StartVal, Alloca); 1186dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1187dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Make the new basic block for the loop header, inserting after current 1188dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // block. 1189dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction); 1190dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1191dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Insert an explicit fall through from the current block to the LoopBB. 1192dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateBr(LoopBB); 1193dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1194dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Start insertion in LoopBB. 1195dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(LoopBB); 1196dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1197dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Within the loop, the variable is defined equal to the PHI node. If it 1198dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // shadows an existing variable, we have to restore it, so save it now. 1199dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor AllocaInst *OldVal = NamedValues[VarName]; 1200dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues[VarName] = Alloca; 1201dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1202dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit the body of the loop. This, like any other expr, can change the 1203dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // current BB. Note that we ignore the value computed by the body, but don't 1204dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // allow an error. 1205dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Body->Codegen() == 0) 1206dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1207dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1208dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit the step value. 1209dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *StepVal; 1210dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Step) { 1211dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor StepVal = Step->Codegen(); 1212dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (StepVal == 0) return 0; 1213dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 1214dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If not specified, use 1.0. 1215dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0)); 1216dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1217dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1218dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Compute the end condition. 1219dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *EndCond = End->Codegen(); 1220dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (EndCond == 0) return EndCond; 1221dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1222dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Reload, increment, and restore the alloca. This handles the case where 1223dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // the body of the loop mutates the variable. 1224dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str()); 1225dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar"); 1226dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateStore(NextVar, Alloca); 1227dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1228dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Convert condition to a bool by comparing equal to 0.0. 1229dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor EndCond = Builder.CreateFCmpONE(EndCond, 1230dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ConstantFP::get(getGlobalContext(), APFloat(0.0)), 1231dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "loopcond"); 1232dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1233dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create the "after loop" block and insert it. 1234dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction); 1235dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1236dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Insert the conditional branch into the end of LoopEndBB. 1237dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateCondBr(EndCond, LoopBB, AfterBB); 1238dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1239dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Any new code will be inserted in AfterBB. 1240dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(AfterBB); 1241dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1242dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Restore the unshadowed variable. 1243dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (OldVal) 1244dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues[VarName] = OldVal; 1245dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor else 1246dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues.erase(VarName); 1247dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1248dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1249dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // for expr always returns 0.0. 1250dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return Constant::getNullValue(Type::getDoubleTy(getGlobalContext())); 1251dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1252dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1253dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorValue *VarExprAST::Codegen() { 1254dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<AllocaInst *> OldBindings; 1255dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1256dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *TheFunction = Builder.GetInsertBlock()->getParent(); 1257dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1258dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Register all variables and emit their initializer. 1259dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (unsigned i = 0, e = VarNames.size(); i != e; ++i) { 1260dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor const std::string &VarName = VarNames[i].first; 1261dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ExprAST *Init = VarNames[i].second; 1262dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1263dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Emit the initializer before adding the variable to scope, this prevents 1264dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // the initializer from referencing the variable itself, and permits stuff 1265dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // like this: 1266dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // var a = 1 in 1267dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // var a = a in ... # refers to outer 'a'. 1268dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *InitVal; 1269dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Init) { 1270dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor InitVal = Init->Codegen(); 1271dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (InitVal == 0) return 0; 1272dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { // If not specified, use 0.0. 1273dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0)); 1274dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1275dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1276dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName); 1277dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateStore(InitVal, Alloca); 1278dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1279dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Remember the old variable binding so that we can restore the binding when 1280dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // we unrecurse. 1281dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor OldBindings.push_back(NamedValues[VarName]); 1282dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1283dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Remember this binding. 1284dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues[VarName] = Alloca; 1285dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1286dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1287dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Codegen the body, now that all vars are in scope. 1288dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Value *BodyVal = Body->Codegen(); 1289dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (BodyVal == 0) return 0; 1290dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1291dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Pop all our variables from scope. 1292dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (unsigned i = 0, e = VarNames.size(); i != e; ++i) 1293dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues[VarNames[i].first] = OldBindings[i]; 1294dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1295dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Return the body computation. 1296dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return BodyVal; 1297dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1298dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1299dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorFunction *PrototypeAST::Codegen() { 1300dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Make the function type: double(double,double) etc. 1301dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::vector<Type*> Doubles(Args.size(), 1302dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Type::getDoubleTy(getGlobalContext())); 1303dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()), 1304dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Doubles, false); 1305dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1306dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor std::string FnName = MakeLegalFunctionName(Name); 1307dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1308dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module* M = TheHelper->getModuleForNewFunction(); 1309dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1310dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *F = Function::Create(FT, Function::ExternalLinkage, FnName, M); 1311dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1312dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If F conflicted, there was already something named 'FnName'. If it has a 1313dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // body, don't allow redefinition or reextern. 1314dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (F->getName() != FnName) { 1315dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Delete the one we just made and get the existing one. 1316dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor F->eraseFromParent(); 1317dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor F = M->getFunction(Name); 1318dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1319dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If F already has a body, reject this. 1320dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!F->empty()) { 1321dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ErrorF("redefinition of function"); 1322dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1323dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1324dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1325dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If F took a different number of args, reject. 1326dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (F->arg_size() != Args.size()) { 1327dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ErrorF("redefinition of function with different # args"); 1328dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1329dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1330dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1331dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1332dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Set names for all arguments. 1333dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor unsigned Idx = 0; 1334dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size(); 1335dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor ++AI, ++Idx) 1336dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor AI->setName(Args[Idx]); 1337dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1338dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return F; 1339dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1340dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1341dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// CreateArgumentAllocas - Create an alloca for each argument and register the 1342dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// argument in the symbol table so that references to it will succeed. 1343dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorvoid PrototypeAST::CreateArgumentAllocas(Function *F) { 1344dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function::arg_iterator AI = F->arg_begin(); 1345dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) { 1346dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create an alloca for this variable. 1347dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]); 1348dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1349dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Store the initial value into the alloca. 1350dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateStore(AI, Alloca); 1351dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1352dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Add arguments to variable symbol table. 1353dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues[Args[Idx]] = Alloca; 1354dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1355dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1356dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1357dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorFunction *FunctionAST::Codegen() { 1358dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor NamedValues.clear(); 1359dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1360dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Function *TheFunction = Proto->Codegen(); 1361dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (TheFunction == 0) 1362dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1363dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1364dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // If this is an operator, install it. 1365dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Proto->isBinaryOp()) 1366dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence(); 1367dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1368dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Create a new basic block to start insertion into. 1369dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction); 1370dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.SetInsertPoint(BB); 1371dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1372dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Add all arguments to the symbol table and create their allocas. 1373dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Proto->CreateArgumentAllocas(TheFunction); 1374dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1375dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Value *RetVal = Body->Codegen()) { 1376dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Finish off the function. 1377dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Builder.CreateRet(RetVal); 1378dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1379dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Validate the generated code, checking for consistency. 1380dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor verifyFunction(*TheFunction); 1381dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1382dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return TheFunction; 1383dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1384dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1385dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Error reading body, remove function. 1386dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheFunction->eraseFromParent(); 1387dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1388dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Proto->isBinaryOp()) 1389dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence.erase(Proto->getOperatorName()); 1390dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1391dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1392dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1393dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1394dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Top-Level parsing and JIT Driver 1395dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1396dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1397dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic void HandleDefinition() { 1398dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (FunctionAST *F = ParseDefinition()) { 1399dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheHelper->closeCurrentModule(); 1400dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Function *LF = F->Codegen()) { 1401dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifndef MINIMAL_STDERR_OUTPUT 1402dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "Read function definition:"); 1403dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LF->dump(); 1404dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1405dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1406dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 1407dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Skip token for error recovery. 1408dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 1409dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1410dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1411dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1412dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic void HandleExtern() { 1413dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (PrototypeAST *P = ParseExtern()) { 1414dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Function *F = P->Codegen()) { 1415dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifndef MINIMAL_STDERR_OUTPUT 1416dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "Read extern: "); 1417dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor F->dump(); 1418dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1419dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1420dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 1421dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Skip token for error recovery. 1422dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 1423dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1424dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1425dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1426dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic void HandleTopLevelExpression() { 1427dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Evaluate a top-level expression into an anonymous function. 1428dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (FunctionAST *F = ParseTopLevelExpr()) { 1429dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (Function *LF = F->Codegen()) { 1430dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // JIT the function, returning a function pointer. 1431dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor void *FPtr = TheHelper->getPointerToFunction(LF); 1432dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1433dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Cast it to the right type (takes no arguments, returns a double) so we 1434dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // can call it as a native function. 1435dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor double (*FP)() = (double (*)())(intptr_t)FPtr; 1436dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifdef MINIMAL_STDERR_OUTPUT 1437dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor FP(); 1438dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#else 1439dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "Evaluated to %f\n", FP()); 1440dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1441dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1442dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } else { 1443dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Skip token for error recovery. 1444dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 1445dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1446dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1447dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1448dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// top ::= definition | external | expression | ';' 1449dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorstatic void MainLoop() { 1450dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor while (1) { 1451dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifndef MINIMAL_STDERR_OUTPUT 1452dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "ready> "); 1453dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1454dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor switch (CurTok) { 1455dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_eof: return; 1456dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case ';': getNextToken(); break; // ignore top-level semicolons. 1457dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_def: HandleDefinition(); break; 1458dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor case tok_extern: HandleExtern(); break; 1459dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor default: HandleTopLevelExpression(); break; 1460dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1461dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1462dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1463dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1464dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1465dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// "Library" functions that can be "extern'd" from user code. 1466dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1467dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1468dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// putchard - putchar that takes a double and returns 0. 1469dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorextern "C" 1470dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylordouble putchard(double X) { 1471dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor putchar((char)X); 1472dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1473dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1474dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1475dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor/// printd - printf that takes a double prints it as "%f\n", returning 0. 1476dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorextern "C" 1477dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylordouble printd(double X) { 1478dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor printf("%f", X); 1479dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1480dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1481dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1482dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorextern "C" 1483dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylordouble printlf() { 1484dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor printf("\n"); 1485dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1486dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1487dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1488dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1489dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Command line input file handler 1490dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1491dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1492dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew KaylorModule* parseInputIR(std::string InputFile) { 1493dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor SMDiagnostic Err; 1494dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Module *M = ParseIRFile(InputFile, Err, getGlobalContext()); 1495dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!M) { 1496dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor Err.print("IR parsing failed: ", errs()); 1497dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return NULL; 1498dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1499dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1500dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor char ModID[256]; 1501dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor sprintf(ModID, "IR:%s", InputFile.c_str()); 1502dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor M->setModuleIdentifier(ModID); 1503dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1504dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheHelper->addModule(M); 1505dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return M; 1506dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1507dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1508dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1509dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor// Main driver code. 1510dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor//===----------------------------------------------------------------------===// 1511dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1512dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylorint main(int argc, char **argv) { 1513dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor InitializeNativeTarget(); 1514dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor InitializeNativeTargetAsmPrinter(); 1515dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor InitializeNativeTargetAsmParser(); 1516dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor LLVMContext &Context = getGlobalContext(); 1517dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1518dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor cl::ParseCommandLineOptions(argc, argv, 1519dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor "Kaleidoscope example program\n"); 1520dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1521dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Install standard binary operators. 1522dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // 1 is lowest precedence. 1523dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['='] = 2; 1524dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['<'] = 10; 1525dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['+'] = 20; 1526dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['-'] = 20; 1527dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['/'] = 40; 1528dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor BinopPrecedence['*'] = 40; // highest. 1529dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1530dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Prime the first token. 1531dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifndef MINIMAL_STDERR_OUTPUT 1532dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor fprintf(stderr, "ready> "); 1533dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1534dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor getNextToken(); 1535dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1536dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Make the helper, which holds all the code. 1537dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheHelper = new MCJITHelper(Context); 1538dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1539dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor if (!InputIR.empty()) { 1540dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor parseInputIR(InputIR); 1541dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor } 1542dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1543dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Run the main "interpreter loop" now. 1544dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor MainLoop(); 1545dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1546dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#ifndef MINIMAL_STDERR_OUTPUT 1547dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor // Print out all of the generated code. 1548dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor TheHelper->dump(); 1549dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor#endif 1550dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor 1551dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor return 0; 1552dbbbccc3492aa7f91f21d8902cfb0b766dabb849Andrew Kaylor} 1553