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Change the names of member variables per Chris' instructions, and document

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them more clearly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23118 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-08-27 19:09:02 +00:00
parent 8c4bde36a3
commit 0f9beca707
2 changed files with 15 additions and 13 deletions
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24
include/llvm/Target/TargetLowering.h
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@ -210,12 +210,14 @@ public:
/// @brief Get maximum # of store operations permitted for llvm.memmove
unsigned getMaxStoresPerMemMove() const { return maxStoresPerMemMove; }
/// This function returns true if the target allows unaligned stores. This is
/// used in situations where an array copy/move/set is converted to a sequence
/// of store operations. It ensures that such replacements don't generate
/// code that causes an alignment error (trap) on the target machine.
/// @brief Determine if the target supports unaligned stores.
bool allowsUnalignedStores() const { return allowUnalignedStores; }
/// This function returns true if the target allows unaligned memory accesses.
/// This is used, for example, in situations where an array copy/move/set is
/// converted to a sequence of store operations. It's use helps to ensure that
/// such replacements don't generate code that causes an alignment error
/// (trap) on the target machine.
/// @brief Determine if the target supports unaligned memory accesses.
bool allowsUnalignedMemoryAccesses() const
{ return allowUnalignedMemoryAccesses; }
//===--------------------------------------------------------------------===//
// TargetLowering Configuration Methods - These methods should be invoked by
@ -442,11 +444,11 @@ protected:
/// @brief Specify maximum bytes of store instructions per memmove call.
unsigned maxStoresPerMemMove;
/// This field specifies whether the target machine permits unaligned stores.
/// This is used to determine the size of store operations for copying
/// small arrays and other similar tasks.
/// @brief Indicate whether the target machine permits unaligned stores.
bool allowUnalignedStores;
/// This field specifies whether the target machine permits unaligned memory
/// accesses. This is used, for example, to determine the size of store
/// operations when copying small arrays and other similar tasks.
/// @brief Indicate whether the target permits unaligned memory accesses.
bool allowUnalignedMemoryAccesses;
};
} // end llvm namespace

4
lib/CodeGen/SelectionDAG/TargetLowering.cpp
View File

@ -27,8 +27,8 @@ TargetLowering::TargetLowering(TargetMachine &tm)
ShiftAmountTy = SetCCResultTy = PointerTy = getValueType(TD.getIntPtrType());
ShiftAmtHandling = Undefined;
memset(RegClassForVT, 0,MVT::LAST_VALUETYPE*sizeof(TargetRegisterClass*));
maxStoresPerMemSet = maxStoresPerMemCpy = maxStoresPerMemMove = 0;
allowUnalignedStores = false;
maxStoresPerMemSet = maxStoresPerMemCpy = maxStoresPerMemMove = 8;
allowUnalignedMemoryAccesses = false;
}
TargetLowering::~TargetLowering() {}