mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 19:30:10 +00:00
2a7eb23091
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@526 91177308-0d34-0410-b5e6-96231b3b80d8
312 lines
9.7 KiB
C++
312 lines
9.7 KiB
C++
//===-- iConstPool.cpp - Implement ConstPool instructions --------*- C++ -*--=//
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//
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// This file implements the ConstPool* classes...
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//
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//===----------------------------------------------------------------------===//
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#define __STDC_LIMIT_MACROS // Get defs for INT64_MAX and friends...
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#include "llvm/ConstPoolVals.h"
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#include "llvm/Support/StringExtras.h" // itostr
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#include "llvm/DerivedTypes.h"
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#include "llvm/SymbolTable.h"
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#include <algorithm>
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#include <assert.h>
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ConstPoolBool *ConstPoolBool::True = new ConstPoolBool(true);
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ConstPoolBool *ConstPoolBool::False = new ConstPoolBool(false);
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//===----------------------------------------------------------------------===//
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// ConstPoolVal Class
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//===----------------------------------------------------------------------===//
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// Specialize setName to take care of symbol table majik
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void ConstPoolVal::setName(const string &Name, SymbolTable *ST) {
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assert(ST && "Type::setName - Must provide symbol table argument!");
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if (Name.size()) ST->insert(Name, this);
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}
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// Static constructor to create a '0' constant of arbitrary type...
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ConstPoolVal *ConstPoolVal::getNullConstant(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstPoolBool::get(false);
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: return ConstPoolSInt::get(Ty, 0);
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: return ConstPoolUInt::get(Ty, 0);
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case Type::FloatTyID:
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case Type::DoubleTyID: return ConstPoolFP::get(Ty, 0);
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default:
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return 0;
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}
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}
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//===----------------------------------------------------------------------===//
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// ConstPoolXXX Classes
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Normal Constructors
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ConstPoolBool::ConstPoolBool(bool V) : ConstPoolVal(Type::BoolTy) {
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Val = V;
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}
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ConstPoolInt::ConstPoolInt(const Type *Ty, uint64_t V) : ConstPoolVal(Ty) {
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Val.Unsigned = V;
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}
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ConstPoolSInt::ConstPoolSInt(const Type *Ty, int64_t V) : ConstPoolInt(Ty, V) {
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assert(isValueValidForType(Ty, V) && "Value too large for type!");
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}
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ConstPoolUInt::ConstPoolUInt(const Type *Ty, uint64_t V) : ConstPoolInt(Ty, V) {
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assert(isValueValidForType(Ty, V) && "Value too large for type!");
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}
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ConstPoolFP::ConstPoolFP(const Type *Ty, double V) : ConstPoolVal(Ty) {
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assert(isValueValidForType(Ty, V) && "Value too large for type!");
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Val = V;
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}
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ConstPoolArray::ConstPoolArray(const ArrayType *T,
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const vector<ConstPoolVal*> &V)
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: ConstPoolVal(T) {
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for (unsigned i = 0; i < V.size(); i++) {
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assert(V[i]->getType() == T->getElementType());
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Operands.push_back(Use(V[i], this));
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}
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}
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ConstPoolStruct::ConstPoolStruct(const StructType *T,
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const vector<ConstPoolVal*> &V)
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: ConstPoolVal(T) {
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const StructType::ElementTypes &ETypes = T->getElementTypes();
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for (unsigned i = 0; i < V.size(); i++) {
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assert(V[i]->getType() == ETypes[i]);
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Operands.push_back(Use(V[i], this));
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}
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}
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//===----------------------------------------------------------------------===//
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// getStrValue implementations
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string ConstPoolBool::getStrValue() const {
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return Val ? "true" : "false";
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}
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string ConstPoolSInt::getStrValue() const {
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return itostr(Val.Signed);
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}
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string ConstPoolUInt::getStrValue() const {
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return utostr(Val.Unsigned);
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}
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string ConstPoolFP::getStrValue() const {
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return ftostr(Val);
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}
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string ConstPoolArray::getStrValue() const {
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string Result = "[";
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if (Operands.size()) {
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Result += " " + Operands[0]->getType()->getDescription() +
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" " + Operands[0]->castConstantAsserting()->getStrValue();
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for (unsigned i = 1; i < Operands.size(); i++)
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Result += ", " + Operands[i]->getType()->getDescription() +
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" " + Operands[i]->castConstantAsserting()->getStrValue();
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}
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return Result + " ]";
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}
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string ConstPoolStruct::getStrValue() const {
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string Result = "{";
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if (Operands.size()) {
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Result += " " + Operands[0]->getType()->getDescription() +
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" " + Operands[0]->castConstantAsserting()->getStrValue();
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for (unsigned i = 1; i < Operands.size(); i++)
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Result += ", " + Operands[i]->getType()->getDescription() +
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" " + Operands[i]->castConstantAsserting()->getStrValue();
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}
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return Result + " }";
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}
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//===----------------------------------------------------------------------===//
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// isValueValidForType implementations
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bool ConstPoolSInt::isValueValidForType(const Type *Ty, int64_t Val) {
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switch (Ty->getPrimitiveID()) {
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default:
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return false; // These can't be represented as integers!!!
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// Signed types...
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case Type::SByteTyID:
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return (Val <= INT8_MAX && Val >= INT8_MIN);
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case Type::ShortTyID:
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return (Val <= INT16_MAX && Val >= INT16_MIN);
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case Type::IntTyID:
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return (Val <= INT32_MAX && Val >= INT32_MIN);
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case Type::LongTyID:
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return true; // This is the largest type...
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}
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assert(0 && "WTF?");
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return false;
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}
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bool ConstPoolUInt::isValueValidForType(const Type *Ty, uint64_t Val) {
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switch (Ty->getPrimitiveID()) {
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default:
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return false; // These can't be represented as integers!!!
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// Unsigned types...
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case Type::UByteTyID:
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return (Val <= UINT8_MAX);
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case Type::UShortTyID:
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return (Val <= UINT16_MAX);
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case Type::UIntTyID:
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return (Val <= UINT32_MAX);
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case Type::ULongTyID:
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return true; // This is the largest type...
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}
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assert(0 && "WTF?");
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return false;
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}
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bool ConstPoolFP::isValueValidForType(const Type *Ty, double Val) {
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switch (Ty->getPrimitiveID()) {
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default:
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return false; // These can't be represented as floating point!
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// TODO: Figure out how to test if a double can be cast to a float!
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case Type::FloatTyID:
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/*
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return (Val <= UINT8_MAX);
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*/
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case Type::DoubleTyID:
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return true; // This is the largest type...
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}
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};
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//===----------------------------------------------------------------------===//
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// Hash Function Implementations
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#if 0
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unsigned ConstPoolSInt::hash(const Type *Ty, int64_t V) {
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return unsigned(Ty->getPrimitiveID() ^ V);
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}
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unsigned ConstPoolUInt::hash(const Type *Ty, uint64_t V) {
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return unsigned(Ty->getPrimitiveID() ^ V);
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}
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unsigned ConstPoolFP::hash(const Type *Ty, double V) {
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return Ty->getPrimitiveID() ^ unsigned(V);
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}
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unsigned ConstPoolArray::hash(const ArrayType *Ty,
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const vector<ConstPoolVal*> &V) {
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unsigned Result = (Ty->getUniqueID() << 5) ^ (Ty->getUniqueID() * 7);
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for (unsigned i = 0; i < V.size(); ++i)
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Result ^= V[i]->getHash() << (i & 7);
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return Result;
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}
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unsigned ConstPoolStruct::hash(const StructType *Ty,
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const vector<ConstPoolVal*> &V) {
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unsigned Result = (Ty->getUniqueID() << 5) ^ (Ty->getUniqueID() * 7);
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for (unsigned i = 0; i < V.size(); ++i)
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Result ^= V[i]->getHash() << (i & 7);
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return Result;
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}
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#endif
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//===----------------------------------------------------------------------===//
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// Factory Function Implementation
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template<class ValType, class ConstPoolClass>
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struct ValueMap {
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typedef pair<const Type*, ValType> ConstHashKey;
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map<ConstHashKey, ConstPoolClass *> Map;
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inline ConstPoolClass *get(const Type *Ty, ValType V) {
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map<ConstHashKey,ConstPoolClass *>::iterator I =
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Map.find(ConstHashKey(Ty, V));
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return (I != Map.end()) ? I->second : 0;
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}
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inline void add(const Type *Ty, ValType V, ConstPoolClass *CP) {
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Map.insert(make_pair(ConstHashKey(Ty, V), CP));
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}
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};
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//---- ConstPoolUInt::get() and ConstPoolSInt::get() implementations...
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//
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static ValueMap<uint64_t, ConstPoolInt> IntConstants;
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ConstPoolSInt *ConstPoolSInt::get(const Type *Ty, int64_t V) {
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ConstPoolSInt *Result = (ConstPoolSInt*)IntConstants.get(Ty, (uint64_t)V);
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if (!Result) // If no preexisting value, create one now...
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IntConstants.add(Ty, V, Result = new ConstPoolSInt(Ty, V));
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return Result;
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}
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ConstPoolUInt *ConstPoolUInt::get(const Type *Ty, uint64_t V) {
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ConstPoolUInt *Result = (ConstPoolUInt*)IntConstants.get(Ty, V);
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if (!Result) // If no preexisting value, create one now...
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IntConstants.add(Ty, V, Result = new ConstPoolUInt(Ty, V));
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return Result;
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}
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ConstPoolInt *ConstPoolInt::get(const Type *Ty, unsigned char V) {
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assert(V <= 127 && "Can only be used with very small positive constants!");
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if (Ty->isSigned()) return ConstPoolSInt::get(Ty, V);
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return ConstPoolUInt::get(Ty, V);
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}
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//---- ConstPoolFP::get() implementation...
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//
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static ValueMap<double, ConstPoolFP> FPConstants;
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ConstPoolFP *ConstPoolFP::get(const Type *Ty, double V) {
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ConstPoolFP *Result = FPConstants.get(Ty, V);
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if (!Result) // If no preexisting value, create one now...
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FPConstants.add(Ty, V, Result = new ConstPoolFP(Ty, V));
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return Result;
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}
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//---- ConstPoolArray::get() implementation...
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//
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static ValueMap<vector<ConstPoolVal*>, ConstPoolArray> ArrayConstants;
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ConstPoolArray *ConstPoolArray::get(const ArrayType *Ty,
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const vector<ConstPoolVal*> &V) {
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ConstPoolArray *Result = ArrayConstants.get(Ty, V);
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if (!Result) // If no preexisting value, create one now...
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ArrayConstants.add(Ty, V, Result = new ConstPoolArray(Ty, V));
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return Result;
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}
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//---- ConstPoolStruct::get() implementation...
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//
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static ValueMap<vector<ConstPoolVal*>, ConstPoolStruct> StructConstants;
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ConstPoolStruct *ConstPoolStruct::get(const StructType *Ty,
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const vector<ConstPoolVal*> &V) {
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ConstPoolStruct *Result = StructConstants.get(Ty, V);
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if (!Result) // If no preexisting value, create one now...
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StructConstants.add(Ty, V, Result = new ConstPoolStruct(Ty, V));
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return Result;
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}
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