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Check for empty structs, and for consistency, zero-element arrays. 

llvm-svn: 123383
This commit is contained in:
Bob Wilson 2011-01-13 18:26:59 +00:00
parent d43037cb70
commit c8056a952e
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp
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@ -1084,12 +1084,12 @@ static bool isHomogeneousAggregate(const Type *T, unsigned &NumElts,
const Type *&EltTy) { const Type *&EltTy) {
if (const ArrayType *AT = dyn_cast<ArrayType>(T)) { if (const ArrayType *AT = dyn_cast<ArrayType>(T)) {
NumElts = AT->getNumElements(); NumElts = AT->getNumElements();
EltTy = AT->getElementType(); EltTy = (NumElts == 0 ? 0 : AT->getElementType());
return true; return true;
} }
if (const StructType *ST = dyn_cast<StructType>(T)) { if (const StructType *ST = dyn_cast<StructType>(T)) {
NumElts = ST->getNumContainedTypes(); NumElts = ST->getNumContainedTypes();
EltTy = ST->getContainedType(0); EltTy = (NumElts == 0 ? 0 : ST->getContainedType(0));
for (unsigned n = 1; n < NumElts; ++n) { for (unsigned n = 1; n < NumElts; ++n) {
if (ST->getContainedType(n) != EltTy) if (ST->getContainedType(n) != EltTy)
return false; return false;