/// BuildLookup - Build instructions with Builder to retrieve the value at
/// the position given by Index in the lookup table.
- Value *BuildLookup(Value *Index, uint64_t TableSize, IRBuilder<> &Builder);
+ Value *BuildLookup(Value *Index, IRBuilder<> &Builder);
/// WouldFitInRegister - Return true if a table with TableSize elements of
/// type ElementType would fit in a target-legal register.
Kind = ArrayKind;
}
-Value *SwitchLookupTable::BuildLookup(Value *Index, uint64_t TableSize,
- IRBuilder<> &Builder) {
+Value *SwitchLookupTable::BuildLookup(Value *Index, IRBuilder<> &Builder) {
switch (Kind) {
case SingleValueKind:
return SingleValue;
}
case ArrayKind: {
// Make sure the table index will not overflow when treated as signed.
- if (IntegerType *IT = dyn_cast<IntegerType>(Index->getType()))
- if (TableSize > (1ULL << (IT->getBitWidth() - 1)))
- Index = Builder.CreateZExt(Index,
- IntegerType::get(IT->getContext(),
- IT->getBitWidth() + 1),
- "switch.tableidx.zext");
+ IntegerType *IT = cast<IntegerType>(Index->getType());
+ uint64_t TableSize = Array->getInitializer()->getType()
+ ->getArrayNumElements();
+ if (TableSize > (1ULL << (IT->getBitWidth() - 1)))
+ Index = Builder.CreateZExt(Index,
+ IntegerType::get(IT->getContext(),
+ IT->getBitWidth() + 1),
+ "switch.tableidx.zext");
Value *GEPIndices[] = { Builder.getInt32(0), Index };
Value *GEP = Builder.CreateInBoundsGEP(Array, GEPIndices,
SwitchLookupTable Table(Mod, TableSize, MinCaseVal, ResultLists[PHI],
DV, DL);
- Value *Result = Table.BuildLookup(TableIndex, TableSize, Builder);
+ Value *Result = Table.BuildLookup(TableIndex, Builder);
// If the result is used to return immediately from the function, we want to
// do that right here.