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Use APFloat in UpgradeParser and AsmParser. Change all references to ConstantFP to use the APFloat interface rather than double. Remove the ConstantFP double interfaces. Use APFloat functions for constant folding arithmetic and comparisons. (There are still way too many places APFloat is just a wrapper around host float/double, but we're getting there.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747 91177308-0d34-0410-b5e6-96231b3b80d8
255 lines
7.9 KiB
C++
255 lines
7.9 KiB
C++
//===-- ParserInternals.h - Definitions internal to the parser --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file defines the various variables that are shared among the
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// different components of the parser...
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//
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//===----------------------------------------------------------------------===//
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#ifndef PARSER_INTERNALS_H
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#define PARSER_INTERNALS_H
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/ParameterAttributes.h"
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#include "llvm/Function.h"
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#include "llvm/Instructions.h"
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#include "llvm/Assembly/Parser.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/APFloat.h"
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// Global variables exported from the lexer...
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extern int llvmAsmlineno; /// FIXME: Not threading friendly
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extern llvm::ParseError* TheParseError; /// FIXME: Not threading friendly
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extern std::string &llvmAsmTextin;
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// functions exported from the lexer
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void set_scan_file(FILE * F);
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void set_scan_string (const char * str);
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// Globals exported by the parser...
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extern char* llvmAsmtext;
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extern int llvmAsmleng;
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namespace llvm {
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class Module;
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// Globals exported by the parser...
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extern std::string CurFilename; /// FIXME: Not threading friendly
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// RunVMAsmParser - Parse a file and return Module
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Module *RunVMAsmParser(const std::string &Filename, FILE *F);
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// Parse a string directly
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Module *RunVMAsmParser(const char * AsmString, Module * M);
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// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
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// appropriate character.
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char *UnEscapeLexed(char *Buffer);
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// GenerateError - Wrapper around the ParseException class that automatically
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// fills in file line number and column number and options info.
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//
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// This also helps me because I keep typing 'throw new ParseException' instead
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// of just 'throw ParseException'... sigh...
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//
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extern void GenerateError(const std::string &message, int LineNo = -1);
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/// InlineAsmDescriptor - This is a simple class that holds info about inline
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/// asm blocks, for use by ValID.
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struct InlineAsmDescriptor {
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std::string AsmString, Constraints;
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bool HasSideEffects;
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InlineAsmDescriptor(const std::string &as, const std::string &c, bool HSE)
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: AsmString(as), Constraints(c), HasSideEffects(HSE) {}
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};
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// ValID - Represents a reference of a definition of some sort. This may either
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// be a numeric reference or a symbolic (%var) reference. This is just a
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// discriminated union.
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//
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// Note that I can't implement this class in a straight forward manner with
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// constructors and stuff because it goes in a union.
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//
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struct ValID {
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enum {
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LocalID, GlobalID, LocalName, GlobalName,
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ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal,
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ConstUndefVal, ConstZeroVal, ConstantVal, InlineAsmVal
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} Type;
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union {
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unsigned Num; // If it's a numeric reference like %1234
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std::string *Name; // If it's a named reference. Memory must be deleted.
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int64_t ConstPool64; // Constant pool reference. This is the value
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uint64_t UConstPool64;// Unsigned constant pool reference.
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APFloat *ConstPoolFP; // Floating point constant pool reference
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Constant *ConstantValue; // Fully resolved constant for ConstantVal case.
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InlineAsmDescriptor *IAD;
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};
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static ValID createLocalID(unsigned Num) {
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ValID D; D.Type = LocalID; D.Num = Num; return D;
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}
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static ValID createGlobalID(unsigned Num) {
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ValID D; D.Type = GlobalID; D.Num = Num; return D;
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}
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static ValID createLocalName(const std::string &Name) {
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ValID D; D.Type = LocalName; D.Name = new std::string(Name); return D;
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}
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static ValID createGlobalName(const std::string &Name) {
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ValID D; D.Type = GlobalName; D.Name = new std::string(Name); return D;
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}
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static ValID create(int64_t Val) {
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ValID D; D.Type = ConstSIntVal; D.ConstPool64 = Val; return D;
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}
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static ValID create(uint64_t Val) {
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ValID D; D.Type = ConstUIntVal; D.UConstPool64 = Val; return D;
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}
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static ValID create(APFloat *Val) {
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ValID D; D.Type = ConstFPVal; D.ConstPoolFP = Val; return D;
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}
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static ValID createNull() {
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ValID D; D.Type = ConstNullVal; return D;
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}
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static ValID createUndef() {
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ValID D; D.Type = ConstUndefVal; return D;
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}
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static ValID createZeroInit() {
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ValID D; D.Type = ConstZeroVal; return D;
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}
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static ValID create(Constant *Val) {
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ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D;
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}
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static ValID createInlineAsm(const std::string &AsmString,
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const std::string &Constraints,
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bool HasSideEffects) {
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ValID D;
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D.Type = InlineAsmVal;
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D.IAD = new InlineAsmDescriptor(AsmString, Constraints, HasSideEffects);
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return D;
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}
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inline void destroy() const {
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if (Type == LocalName || Type == GlobalName)
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delete Name; // Free this strdup'd memory.
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else if (Type == InlineAsmVal)
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delete IAD;
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}
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inline ValID copy() const {
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if (Type != LocalName && Type != GlobalName) return *this;
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ValID Result = *this;
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Result.Name = new std::string(*Name);
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return Result;
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}
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inline std::string getName() const {
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switch (Type) {
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case LocalID : return '%' + utostr(Num);
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case GlobalID : return '@' + utostr(Num);
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case LocalName : return *Name;
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case GlobalName : return *Name;
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case ConstFPVal : return ftostr(*ConstPoolFP);
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case ConstNullVal : return "null";
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case ConstUndefVal : return "undef";
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case ConstZeroVal : return "zeroinitializer";
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case ConstUIntVal :
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case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
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case ConstantVal:
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if (ConstantValue == ConstantInt::getTrue()) return "true";
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if (ConstantValue == ConstantInt::getFalse()) return "false";
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return "<constant expression>";
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default:
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assert(0 && "Unknown value!");
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abort();
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return "";
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}
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}
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bool operator<(const ValID &V) const {
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if (Type != V.Type) return Type < V.Type;
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switch (Type) {
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case LocalID:
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case GlobalID: return Num < V.Num;
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case LocalName:
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case GlobalName: return *Name < *V.Name;
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case ConstSIntVal: return ConstPool64 < V.ConstPool64;
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case ConstUIntVal: return UConstPool64 < V.UConstPool64;
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case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
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APFloat::cmpLessThan;
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case ConstNullVal: return false;
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case ConstUndefVal: return false;
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case ConstZeroVal: return false;
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case ConstantVal: return ConstantValue < V.ConstantValue;
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default: assert(0 && "Unknown value type!"); return false;
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}
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}
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bool operator==(const ValID &V) const {
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if (Type == V.Type) {
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switch (Type) {
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case LocalID:
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case GlobalID: return Num == V.Num;
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case LocalName:
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case GlobalName: return *Name == *(V.Name);
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case ConstSIntVal: return ConstPool64 == V.ConstPool64;
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case ConstUIntVal: return UConstPool64 == V.UConstPool64;
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case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
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APFloat::cmpEqual;
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case ConstantVal: return ConstantValue == V.ConstantValue;
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case ConstNullVal: return true;
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case ConstUndefVal: return true;
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case ConstZeroVal: return true;
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default: assert(0 && "Unknown value type!"); return false;
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}
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}
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return false;
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}
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};
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struct TypeWithAttrs {
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llvm::PATypeHolder *Ty;
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uint16_t Attrs;
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};
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typedef std::vector<TypeWithAttrs> TypeWithAttrsList;
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struct ArgListEntry {
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uint16_t Attrs;
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llvm::PATypeHolder *Ty;
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std::string *Name;
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};
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typedef std::vector<struct ArgListEntry> ArgListType;
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struct ValueRefListEntry {
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Value *Val;
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uint16_t Attrs;
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};
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typedef std::vector<ValueRefListEntry> ValueRefList;
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} // End llvm namespace
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#endif
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