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C++, CBE, and TLOF support for ConstantDataSequential

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148805 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2012-01-24 14:17:05 +00:00
parent 3210060243
commit 29cc6cb4d1
4 changed files with 125 additions and 20 deletions
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3
lib/VMCore/Constants.cpp
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@@ -2048,7 +2048,8 @@ static bool isAllZeros(StringRef Arr) {
/// we *want* an underlying "char*" to avoid TBAA type punning violations.
Constant *ConstantDataSequential::getImpl(StringRef Elements, Type *Ty) {
assert(isElementTypeCompatible(cast<SequentialType>(Ty)->getElementType()));
// If the elements are all zero, return a CAZ, which is more dense.
// If the elements are all zero or there are no elements, return a CAZ, which
// is more dense and canonical.
if (isAllZeros(Elements))
return ConstantAggregateZero::get(Ty);