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Implemented serialization of signed integers.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43828 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek
2007-11-07 18:24:34 +00:00
parent 29121848b9
commit 2e6452ca0c
5 changed files with 41 additions and 2 deletions
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15
lib/Bitcode/Reader/Deserialize.cpp
View File

@ -105,6 +105,12 @@ uint64_t Deserializer::ReadInt() {
return Record[RecIdx++];
}
int64_t Deserializer::ReadSInt() {
uint64_t x = ReadInt();
int64_t magnitude = x >> 1;
return x & 0x1 ? -magnitude : magnitude;
}
char* Deserializer::ReadCStr(char* cstr, unsigned MaxLen, bool isNullTerm) {
if (cstr == NULL)
MaxLen = 0; // Zero this just in case someone does something funny.
@ -226,3 +232,12 @@ INT_READ(unsigned char)
INT_READ(unsigned short)
INT_READ(unsigned int)
INT_READ(unsigned long)
#define SINT_READ(TYPE)\
void SerializeTrait<TYPE>::Read(Deserializer& D, TYPE& X) {\
X = (TYPE) D.ReadSInt(); }
INT_READ(signed char)
INT_READ(signed short)
INT_READ(signed int)
INT_READ(signed long)

17
lib/Bitcode/Writer/Serialize.cpp
View File

@ -48,11 +48,18 @@ void Serializer::ExitBlock() {
Stream.ExitBlock();
}
void Serializer::EmitInt(unsigned X) {
void Serializer::EmitInt(uint64_t X) {
assert (BlockLevel > 0);
Record.push_back(X);
}
void Serializer::EmitSInt(int64_t X) {
if (X >= 0)
EmitInt(X << 1);
else
EmitInt((-X << 1) | 1);
}
void Serializer::EmitCStr(const char* s, const char* end) {
Record.push_back(end - s);
@ -91,3 +98,11 @@ INT_EMIT(unsigned char)
INT_EMIT(unsigned short)
INT_EMIT(unsigned int)
INT_EMIT(unsigned long)
#define SINT_EMIT(TYPE)\
void SerializeTrait<TYPE>::Emit(Serializer&S, TYPE X) { S.EmitSInt(X); }
SINT_EMIT(signed char)
SINT_EMIT(signed short)
SINT_EMIT(signed int)
SINT_EMIT(signed long)