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[opaque pointer type] gep API migration, ArgPromo

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This involved threading the type-to-gep through a data structure, since
the code was relying on the pointer type to carry this information. I
imagine there will be a lot of this work across the project... slow
work chasing each use case, but the assertions will help keep me honest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232277 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2015-03-14 21:11:26 +00:00
parent bb939f02b2
commit 2f69477cfd
1 changed files with 19 additions and 16 deletions
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35
lib/Transforms/IPO/ArgumentPromotion.cpp
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@ -584,7 +584,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
FunctionType *FTy = F->getFunctionType();
std::vector<Type*> Params;
typedef std::set<IndicesVector> ScalarizeTable;
typedef std::set<std::pair<Type*, IndicesVector>> ScalarizeTable;
// ScalarizedElements - If we are promoting a pointer that has elements
// accessed out of it, keep track of which elements are accessed so that we
@ -644,7 +644,11 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
ScalarizeTable &ArgIndices = ScalarizedElements[I];
for (User *U : I->users()) {
Instruction *UI = cast<Instruction>(U);
assert(isa<LoadInst>(UI) || isa<GetElementPtrInst>(UI));
Type *SrcTy;
if (LoadInst *L = dyn_cast<LoadInst>(UI))
SrcTy = L->getType();
else
SrcTy = cast<GetElementPtrInst>(UI)->getSourceElementType();
IndicesVector Indices;
Indices.reserve(UI->getNumOperands() - 1);
// Since loads will only have a single operand, and GEPs only a single
@ -656,7 +660,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
// GEPs with a single 0 index can be merged with direct loads
if (Indices.size() == 1 && Indices.front() == 0)
Indices.clear();
ArgIndices.insert(Indices);
ArgIndices.insert(std::make_pair(SrcTy, Indices));
LoadInst *OrigLoad;
if (LoadInst *L = dyn_cast<LoadInst>(UI))
OrigLoad = L;
@ -670,11 +674,11 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
for (ScalarizeTable::iterator SI = ArgIndices.begin(),
E = ArgIndices.end(); SI != E; ++SI) {
// not allowed to dereference ->begin() if size() is 0
Params.push_back(GetElementPtrInst::getIndexedType(I->getType(), *SI));
Params.push_back(GetElementPtrInst::getIndexedType(I->getType(), SI->second));
assert(Params.back());
}
if (ArgIndices.size() == 1 && ArgIndices.begin()->empty())
if (ArgIndices.size() == 1 && ArgIndices.begin()->second.empty())
++NumArgumentsPromoted;
else
++NumAggregatesPromoted;
@ -765,9 +769,8 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
ConstantInt::get(Type::getInt32Ty(F->getContext()), 0), nullptr };
for (unsigned i = 0, e = STy->getNumElements(); i != e; ++i) {
Idxs[1] = ConstantInt::get(Type::getInt32Ty(F->getContext()), i);
Value *Idx = GetElementPtrInst::Create(*AI, Idxs,
(*AI)->getName()+"."+utostr(i),
Call);
Value *Idx = GetElementPtrInst::Create(
STy, *AI, Idxs, (*AI)->getName() + "." + utostr(i), Call);
// TODO: Tell AA about the new values?
Args.push_back(new LoadInst(Idx, Idx->getName()+".val", Call));
}
@ -780,12 +783,12 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
for (ScalarizeTable::iterator SI = ArgIndices.begin(),
E = ArgIndices.end(); SI != E; ++SI) {
Value *V = *AI;
LoadInst *OrigLoad = OriginalLoads[std::make_pair(I, *SI)];
if (!SI->empty()) {
Ops.reserve(SI->size());
LoadInst *OrigLoad = OriginalLoads[std::make_pair(I, SI->second)];
if (!SI->second.empty()) {
Ops.reserve(SI->second.size());
Type *ElTy = V->getType();
for (IndicesVector::const_iterator II = SI->begin(),
IE = SI->end(); II != IE; ++II) {
for (IndicesVector::const_iterator II = SI->second.begin(),
IE = SI->second.end(); II != IE; ++II) {
// Use i32 to index structs, and i64 for others (pointers/arrays).
// This satisfies GEP constraints.
Type *IdxTy = (ElTy->isStructTy() ?
@ -796,7 +799,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
ElTy = cast<CompositeType>(ElTy)->getTypeAtIndex(*II);
}
// And create a GEP to extract those indices.
V = GetElementPtrInst::Create(V, Ops, V->getName()+".idx", Call);
V = GetElementPtrInst::Create(SI->first, V, Ops, V->getName()+".idx", Call);
Ops.clear();
AA.copyValue(OrigLoad->getOperand(0), V);
}
@ -935,7 +938,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
while (!I->use_empty()) {
if (LoadInst *LI = dyn_cast<LoadInst>(I->user_back())) {
assert(ArgIndices.begin()->empty() &&
assert(ArgIndices.begin()->second.empty() &&
"Load element should sort to front!");
I2->setName(I->getName()+".val");
LI->replaceAllUsesWith(I2);
@ -957,7 +960,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
Function::arg_iterator TheArg = I2;
for (ScalarizeTable::iterator It = ArgIndices.begin();
*It != Operands; ++It, ++TheArg) {
It->second != Operands; ++It, ++TheArg) {
assert(It != ArgIndices.end() && "GEP not handled??");
}