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Continue improving support for ConstantDataAggregate, and use the

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new methods recently added to (sometimes greatly!) simplify code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149024 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2012-01-26 02:32:04 +00:00
parent e150e2df42
commit d59ae907ee
5 changed files with 148 additions and 418 deletions
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33
lib/Transforms/IPO/GlobalOpt.cpp
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@ -2176,21 +2176,9 @@ static Constant *EvaluateStoreInto(Constant *Init, Constant *Val,
std::vector<Constant*> Elts;
if (StructType *STy = dyn_cast<StructType>(Init->getType())) {
// Break up the constant into its elements.
if (ConstantStruct *CS = dyn_cast<ConstantStruct>(Init)) {
for (User::op_iterator i = CS->op_begin(), e = CS->op_end(); i != e; ++i)
Elts.push_back(cast<Constant>(*i));
} else if (isa<ConstantAggregateZero>(Init)) {
for (unsigned i = 0, e = STy->getNumElements(); i != e; ++i)
Elts.push_back(Constant::getNullValue(STy->getElementType(i)));
} else if (isa<UndefValue>(Init)) {
for (unsigned i = 0, e = STy->getNumElements(); i != e; ++i)
Elts.push_back(UndefValue::get(STy->getElementType(i)));
} else {
llvm_unreachable("This code is out of sync with "
" ConstantFoldLoadThroughGEPConstantExpr");
}
for (unsigned i = 0, e = STy->getNumElements(); i != e; ++i)
Elts.push_back(Init->getAggregateElement(i));
// Replace the element that we are supposed to.
ConstantInt *CU = cast<ConstantInt>(Addr->getOperand(OpNo));
@ -2209,22 +2197,11 @@ static Constant *EvaluateStoreInto(Constant *Init, Constant *Val,
if (ArrayType *ATy = dyn_cast<ArrayType>(InitTy))
NumElts = ATy->getNumElements();
else
NumElts = cast<VectorType>(InitTy)->getNumElements();
NumElts = InitTy->getVectorNumElements();
// Break up the array into elements.
if (ConstantArray *CA = dyn_cast<ConstantArray>(Init)) {
for (User::op_iterator i = CA->op_begin(), e = CA->op_end(); i != e; ++i)
Elts.push_back(cast<Constant>(*i));
} else if (ConstantVector *CV = dyn_cast<ConstantVector>(Init)) {
for (User::op_iterator i = CV->op_begin(), e = CV->op_end(); i != e; ++i)
Elts.push_back(cast<Constant>(*i));
} else if (isa<ConstantAggregateZero>(Init)) {
Elts.assign(NumElts, Constant::getNullValue(InitTy->getElementType()));
} else {
assert(isa<UndefValue>(Init) && "This code is out of sync with "
" ConstantFoldLoadThroughGEPConstantExpr");
Elts.assign(NumElts, UndefValue::get(InitTy->getElementType()));
}
for (uint64_t i = 0, e = NumElts; i != e; ++i)
Elts.push_back(Init->getAggregateElement(i));
assert(CI->getZExtValue() < NumElts);
Elts[CI->getZExtValue()] =