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- Change getelementptr instruction to use long indexes instead of uint

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indexes for sequential types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3681 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-09-11 01:21:29 +00:00
parent 562219de55
commit 106ff4551c
9 changed files with 57 additions and 62 deletions
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lib/CodeGen/InstrSelection/InstrSelectionSupport.cpp
+8 -8
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@@ -113,12 +113,12 @@ static Value*
FoldGetElemChain(InstrTreeNode* ptrNode, vector<Value*>& chainIdxVec)
{
InstructionNode* gepNode = dyn_cast<InstructionNode>(ptrNode);
if (gepNode == NULL)
return NULL; // ptr value is not computed in this tree
GetElementPtrInst* gepInst =
dyn_cast<GetElementPtrInst>(gepNode->getInstruction());
if (gepInst == NULL) // ptr value does not come from GEP instruction
dyn_cast_or_null<GetElementPtrInst>(gepNode->getInstruction());
// ptr value is not computed in this tree or ptr value does not come from GEP
// instruction
if (gepInst == NULL)
return NULL;
// Return NULL if we don't fold any instructions in.
@@ -149,8 +149,8 @@ FoldGetElemChain(InstrTreeNode* ptrNode, vector<Value*>& chainIdxVec)
ptrVal = gepInst->getPointerOperand();
// Check for a leading [0] index, if any. It will be discarded later.
ConstantUInt* CV = dyn_cast<ConstantUInt>((Value*) *firstIdx);
hasLeadingZero = bool(CV && CV->getValue() == 0);
hasLeadingZero = (*firstIdx ==
Constant::getNullValue((*firstIdx)->getType()));
// Insert its index vector at the start, skipping any leading [0]
chainIdxVec.insert(chainIdxVec.begin(),
@@ -168,7 +168,7 @@ FoldGetElemChain(InstrTreeNode* ptrNode, vector<Value*>& chainIdxVec)
// If the first getElementPtr instruction had a leading [0], add it back.
// Note that this instruction is the *last* one successfully folded above.
if (ptrVal && hasLeadingZero)
chainIdxVec.insert(chainIdxVec.begin(), ConstantUInt::get(Type::UIntTy,0));
chainIdxVec.insert(chainIdxVec.begin(), ConstantSInt::get(Type::LongTy,0));
return ptrVal;
}