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[LoopAccesses] New API to query if memchecks are necessary after partitioning

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This is used by Loop Distribution.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234283 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adam Nemet 2015-04-07 03:35:26 +00:00
parent 320efb05a1
commit ad8a6b66d9
2 changed files with 15 additions and 0 deletions
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4
include/llvm/Analysis/LoopAccessAnalysis.h
View File

@ -339,6 +339,10 @@ public:
bool needsChecking(unsigned I, unsigned J, bool needsChecking(unsigned I, unsigned J,
const SmallVectorImpl<int> *PtrPartition) const; const SmallVectorImpl<int> *PtrPartition) const;
/// \brief Return true if any pointer requires run-time checking according
/// to needsChecking.
bool needsAnyChecking(const SmallVectorImpl<int> *PtrPartition) const;
/// \brief Print the list run-time memory checks necessary. /// \brief Print the list run-time memory checks necessary.
/// ///
/// If \p PtrPartition is set, it contains the partition number for /// If \p PtrPartition is set, it contains the partition number for

11
lib/Analysis/LoopAccessAnalysis.cpp
View File

@ -177,6 +177,17 @@ void LoopAccessInfo::RuntimePointerCheck::print(
} }
} }
bool LoopAccessInfo::RuntimePointerCheck::needsAnyChecking(
const SmallVectorImpl<int> *PtrPartition) const {
unsigned NumPointers = Pointers.size();
for (unsigned I = 0; I < NumPointers; ++I)
for (unsigned J = I + 1; J < NumPointers; ++J)
if (needsChecking(I, J, PtrPartition))
return true;
return false;
}
namespace { namespace {
/// \brief Analyses memory accesses in a loop. /// \brief Analyses memory accesses in a loop.
/// ///