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Add support for the new va_arg instruction

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6029 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-05-08 02:44:12 +00:00
parent 97b315a585
commit 8f77daef04
7 changed files with 30 additions and 11 deletions
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6
lib/Bytecode/Reader/InstructionReader.cpp
View File

@ -130,11 +130,15 @@ bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
Value *V;
switch (Raw.Opcode) {
case Instruction::VarArg:
case Instruction::Cast: {
V = getValue(Raw.Ty, Raw.Arg1);
const Type *Ty = getType(Raw.Arg2);
if (V == 0 || Ty == 0) { std::cerr << "Invalid cast!\n"; return true; }
Res = new CastInst(V, Ty);
if (Raw.Opcode == Instruction::Cast)
Res = new CastInst(V, Ty);
else
Res = new VarArgInst(V, Ty);
return false;
}
case Instruction::PHINode: {

8
lib/Bytecode/Writer/InstructionWriter.cpp
View File

@ -35,7 +35,7 @@ static void outputInstructionFormat0(const Instruction *I,
output_vbr(Type, Out); // Result type
unsigned NumArgs = I->getNumOperands();
output_vbr(NumArgs + isa<CastInst>(I), Out);
output_vbr(NumArgs + (isa<CastInst>(I) || isa<VarArgInst>(I)), Out);
for (unsigned i = 0; i < NumArgs; ++i) {
int Slot = Table.getValSlot(I->getOperand(i));
@ -43,9 +43,9 @@ static void outputInstructionFormat0(const Instruction *I,
output_vbr((unsigned)Slot, Out);
}
if (isa<CastInst>(I)) {
if (isa<CastInst>(I) || isa<VarArgInst>(I)) {
int Slot = Table.getValSlot(I->getType());
assert(Slot != -1 && "Cast return type unknown?");
assert(Slot != -1 && "Cast/VarArg return type unknown?");
output_vbr((unsigned)Slot, Out);
}
@ -218,7 +218,7 @@ void BytecodeWriter::processInstruction(const Instruction &I) {
if (Slot > MaxOpSlot) MaxOpSlot = Slot;
// Handle the special case for cast...
if (isa<CastInst>(I)) {
if (isa<CastInst>(I) || isa<VarArgInst>(I)) {
// Cast has to encode the destination type as the second argument in the
// packet, or else we won't know what type to cast to!
Slots[1] = Table.getValSlot(I.getType());