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raw | patch | inline | side by side (parent: dee5e2c)
author | Manman Ren <manman.ren@gmail.com> | |
Thu, 24 Jul 2014 21:13:20 +0000 (21:13 +0000) | ||
committer | Manman Ren <manman.ren@gmail.com> | |
Thu, 24 Jul 2014 21:13:20 +0000 (21:13 +0000) |
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213895 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Utils/SimplifyCFG.cpp | patch | blob | history |
index a651eacd1bb03747f5599e1391b5af5b143f5f4f..24bb63bb60a5f8108bb1006db1715dfea44a7214 100644 (file)
/// 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.