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For PR950:

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Update for signless integer types and parameter attribute implementation.
Of significant note:
  1. This changes the bytecode format yet again.
  2. There are 1/2 as many integer type planes (this is a good thing)
  3. GEP indices now use only 1 bit to identify their type which means
     more GEP instructions won't be relegated to format 0 (size win)
  4. Parameter attributes are implemented but currently being stored
     verbosely for each function type. Some other day this needs to be
     optimized for size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32783 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-12-31 05:44:24 +00:00
parent 1431061ebb
commit 88cfda2122
3 changed files with 44 additions and 57 deletions
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35
lib/Bytecode/Writer/Writer.cpp
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@@ -214,16 +214,20 @@ void BytecodeWriter::outputType(const Type *T) {
int Slot = Table.getSlot(MT->getReturnType());
assert(Slot != -1 && "Type used but not available!!");
output_typeid((unsigned)Slot);
output_vbr(unsigned(MT->getParamAttrs(0)));
// Output the number of arguments to function (+1 if varargs):
output_vbr((unsigned)MT->getNumParams()+MT->isVarArg());
// Output all of the arguments...
FunctionType::param_iterator I = MT->param_begin();
unsigned Idx = 1;
for (; I != MT->param_end(); ++I) {
Slot = Table.getSlot(*I);
assert(Slot != -1 && "Type used but not available!!");
output_typeid((unsigned)Slot);
output_vbr(unsigned(MT->getParamAttrs(Idx)));
Idx++;
}
// Terminate list with VoidTy if we are a varargs function...
@@ -323,20 +327,13 @@ void BytecodeWriter::outputConstant(const Constant *CPV) {
output_vbr(0U);
break;
case Type::UByteTyID: // Unsigned integer types...
case Type::UShortTyID:
case Type::UIntTyID:
case Type::ULongTyID:
case Type::Int8TyID: // Unsigned integer types...
case Type::Int16TyID:
case Type::Int32TyID:
case Type::Int64TyID:
output_vbr(cast<ConstantInt>(CPV)->getZExtValue());
break;
case Type::SByteTyID: // Signed integer types...
case Type::ShortTyID:
case Type::IntTyID:
case Type::LongTyID:
output_vbr(cast<ConstantInt>(CPV)->getSExtValue());
break;
case Type::ArrayTyID: {
const ConstantArray *CPA = cast<ConstantArray>(CPV);
assert(!CPA->isString() && "Constant strings should be handled specially!");
@@ -489,12 +486,10 @@ void BytecodeWriter::outputInstructionFormat0(const Instruction *I,
unsigned IdxId;
switch (I->getOperand(Idx)->getType()->getTypeID()) {
default: assert(0 && "Unknown index type!");
case Type::UIntTyID: IdxId = 0; break;
case Type::IntTyID: IdxId = 1; break;
case Type::ULongTyID: IdxId = 2; break;
case Type::LongTyID: IdxId = 3; break;
case Type::Int32TyID: IdxId = 0; break;
case Type::Int64TyID: IdxId = 1; break;
}
Slot = (Slot << 2) | IdxId;
Slot = (Slot << 1) | IdxId;
}
output_vbr(unsigned(Slot));
}
@@ -742,12 +737,10 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
unsigned IdxId;
switch (GEP->getOperand(Idx)->getType()->getTypeID()) {
default: assert(0 && "Unknown index type!");
case Type::UIntTyID: IdxId = 0; break;
case Type::IntTyID: IdxId = 1; break;
case Type::ULongTyID: IdxId = 2; break;
case Type::LongTyID: IdxId = 3; break;
case Type::Int32TyID: IdxId = 0; break;
case Type::Int64TyID: IdxId = 1; break;
}
Slots[Idx] = (Slots[Idx] << 2) | IdxId;
Slots[Idx] = (Slots[Idx] << 1) | IdxId;
if (Slots[Idx] > MaxOpSlot) MaxOpSlot = Slots[Idx];
}
} else if (Opcode == 58) {