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Add support for writing ConstantExpr nodes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2899 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
2002-07-14 23:08:30 +00:00
parent a7dac3db79
commit a24a0bb0e2
1 changed files with 23 additions and 1 deletions
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24
lib/Bytecode/Writer/ConstantWriter.cpp
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@ -96,6 +96,27 @@ void BytecodeWriter::outputType(const Type *T) {
} }
bool BytecodeWriter::outputConstant(const Constant *CPV) { bool BytecodeWriter::outputConstant(const Constant *CPV) {
// We must check for a ConstantExpr before switching by type because
// a ConstantExpr can be of any type, and has no explicit value.
//
if (const ConstantExpr* CE = dyn_cast<ConstantExpr>(CPV)) {
assert(CE->getNumOperands() > 0 && "ConstantExpr with 0 operands");
output_vbr(CE->getNumOperands(), Out); // flags as an expr
output_vbr(CE->getOpcode(), Out); // flags as an expr
for (User::const_op_iterator OI = CE->op_begin(); OI != CE->op_end(); ++OI){
int Slot = Table.getValSlot(*OI);
assert(Slot != -1 && "Unknown constant used in ConstantExpr!!");
output_vbr((unsigned)Slot, Out);
Slot = Table.getValSlot((*OI)->getType());
output_vbr((unsigned)Slot, Out);
}
return false;
}
else
output_vbr((unsigned)0, Out); // flag as not a ConstantExpr
switch (CPV->getType()->getPrimitiveID()) { switch (CPV->getType()->getPrimitiveID()) {
case Type::BoolTyID: // Boolean Types case Type::BoolTyID: // Boolean Types
if (cast<const ConstantBool>(CPV)->getValue()) if (cast<const ConstantBool>(CPV)->getValue())
@ -125,7 +146,8 @@ bool BytecodeWriter::outputConstant(const Constant *CPV) {
case Type::ArrayTyID: { case Type::ArrayTyID: {
const ConstantArray *CPA = cast<const ConstantArray>(CPV); const ConstantArray *CPA = cast<const ConstantArray>(CPV);
unsigned size = CPA->getValues().size(); unsigned size = CPA->getValues().size();
assert(size == cast<ArrayType>(CPA->getType())->getNumElements() && "ConstantArray out of whack!"); assert(size == cast<ArrayType>(CPA->getType())->getNumElements()
&& "ConstantArray out of whack!");
for (unsigned i = 0; i < size; i++) { for (unsigned i = 0; i < size; i++) {
int Slot = Table.getValSlot(CPA->getOperand(i)); int Slot = Table.getValSlot(CPA->getOperand(i));
assert(Slot != -1 && "Constant used but not available!!"); assert(Slot != -1 && "Constant used but not available!!");