Peter Collingbourne 5a81e14385 Introduce bitset metadata format and bitset lowering pass. ... This patch introduces a new mechanism that allows IR modules to co-operatively build pointer sets corresponding to addresses within a given set of globals. One particular use case for this is to allow a C++ program to efficiently verify (at each call site) that a vtable pointer is in the set of valid vtable pointers for the class or its derived classes. One way of doing this is for a toolchain component to build, for each class, a bit set that maps to the memory region allocated for the vtables, such that each 1 bit in the bit set maps to a valid vtable for that class, and lay out the vtables next to each other, to minimize the total size of the bit sets. The patch introduces a metadata format for representing pointer sets, an '@llvm.bitset.test' intrinsic and an LTO lowering pass that lays out the globals and builds the bitsets, and documents the new feature. Differential Revision: http://reviews.llvm.org/D7288 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230054 91177308-0d34-0410-b5e6-96231b3b80d8		2015-02-20 20:30:47 +00:00
..
APFloat.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
APInt.h
APSInt.h
ArrayRef.h	I believe we no longer require LLVM_HAS_INITIALIZER_LISTS; it's supported in MSVC 2013 and GCC. Added a trivial test to ensure the ArrayRef initializer list constructor is called and behaves as expected.	2015-02-17 15:37:53 +00:00
BitVector.h
DAGDeltaAlgorithm.h
DeltaAlgorithm.h
DenseMap.h
DenseMapInfo.h
DenseSet.h
DepthFirstIterator.h
edit_distance.h
EquivalenceClasses.h	Introduce bitset metadata format and bitset lowering pass.	2015-02-20 20:30:47 +00:00
FoldingSet.h
GraphTraits.h
Hashing.h
ilist_node.h
ilist.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
ImmutableList.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
ImmutableMap.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
ImmutableSet.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
IndexedMap.h
IntEqClasses.h
IntervalMap.h
IntrusiveRefCntPtr.h
iterator_range.h
iterator.h
MapVector.h
None.h	Make the static instance of None just const.	2015-02-20 13:16:05 +00:00
Optional.h
PackedVector.h
PointerIntPair.h
PointerUnion.h	Introduce bitset metadata format and bitset lowering pass.	2015-02-20 20:30:47 +00:00
PostOrderIterator.h
PriorityQueue.h
SCCIterator.h
ScopedHashTable.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
SetOperations.h
SetVector.h
SmallBitVector.h
SmallPtrSet.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
SmallSet.h
SmallString.h
SmallVector.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
SparseBitVector.h
SparseMultiSet.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
SparseSet.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
Statistic.h
STLExtras.h	Switch our index sequence away from template aliases and just use	2015-02-16 08:22:35 +00:00
StringExtras.h
StringMap.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
StringRef.h
StringSet.h
StringSwitch.h
TinyPtrVector.h
Triple.h
Twine.h	Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.	2015-02-15 22:54:22 +00:00
UniqueVector.h
VariadicFunction.h