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Implement loading and storing of APInt values from memory. 

llvm-svn: 34874
This commit is contained in:
Reid Spencer 2007-03-03 06:18:03 +00:00
parent 1a7d446963
commit 815f8dd225
1 changed files with 16 additions and 8 deletions
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24
llvm/lib/ExecutionEngine/ExecutionEngine.cpp
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@ -425,7 +425,7 @@ GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
else if (BitWidth <= 64)
Result.Int64Val = (uint64_t )cast<ConstantInt>(C)->getZExtValue();
else
assert(0 && "Integers with > 64-bits not implemented");
Result.APIntVal = const_cast<APInt*>(&cast<ConstantInt>(C)->getValue());
break;
}
@ -481,8 +481,12 @@ void ExecutionEngine::StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
Ptr->Untyped[5] = (unsigned char)(TmpVal.Int64Val >> 40);
Ptr->Untyped[6] = (unsigned char)(TmpVal.Int64Val >> 48);
Ptr->Untyped[7] = (unsigned char)(TmpVal.Int64Val >> 56);
} else
assert(0 && "Integer types > 64 bits not supported");
} else {
uint64_t *Dest = (uint64_t*)Ptr;
const uint64_t *Src = Val.APIntVal->getRawData();
for (uint32_t i = 0; i < Val.APIntVal->getNumWords(); ++i)
Dest[i] = Src[i];
}
break;
}
Store4BytesLittleEndian:
@ -537,8 +541,12 @@ Store4BytesLittleEndian:
Ptr->Untyped[2] = (unsigned char)(TmpVal.Int64Val >> 40);
Ptr->Untyped[1] = (unsigned char)(TmpVal.Int64Val >> 48);
Ptr->Untyped[0] = (unsigned char)(TmpVal.Int64Val >> 56);
} else
assert(0 && "Integer types > 64 bits not supported");
} else {
uint64_t *Dest = (uint64_t*)Ptr;
const uint64_t *Src = Val.APIntVal->getRawData();
for (uint32_t i = 0; i < Val.APIntVal->getNumWords(); ++i)
Dest[i] = Src[i];
}
break;
}
Store4BytesBigEndian:
@ -597,7 +605,7 @@ GenericValue ExecutionEngine::LoadValueFromMemory(GenericValue *Ptr,
((uint64_t)Ptr->Untyped[6] << 48) |
((uint64_t)Ptr->Untyped[7] << 56);
} else
assert(0 && "Integer types > 64 bits not supported");
Result.APIntVal = new APInt(BitWidth, BitWidth/64, (uint64_t*)Ptr);
break;
}
Load4BytesLittleEndian:
@ -628,7 +636,7 @@ GenericValue ExecutionEngine::LoadValueFromMemory(GenericValue *Ptr,
} else {
switch (Ty->getTypeID()) {
case Type::IntegerTyID: {
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
uint32_t BitWidth = cast<IntegerType>(Ty)->getBitWidth();
if (BitWidth <= 8)
Result.Int8Val = Ptr->Untyped[0];
else if (BitWidth <= 16) {
@ -649,7 +657,7 @@ GenericValue ExecutionEngine::LoadValueFromMemory(GenericValue *Ptr,
((uint64_t)Ptr->Untyped[1] << 48) |
((uint64_t)Ptr->Untyped[0] << 56);
} else
assert(0 && "Integer types > 64 bits not supported");
Result.APIntVal = new APInt(BitWidth, BitWidth/64, (uint64_t*)Ptr);
break;
}
Load4BytesBigEndian: