forked from OSchip/llvm-project
Change the names of member variables per Chris' instructions, and document
them more clearly. llvm-svn: 23118
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@ -210,12 +210,14 @@ public:
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/// @brief Get maximum # of store operations permitted for llvm.memmove
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unsigned getMaxStoresPerMemMove() const { return maxStoresPerMemMove; }
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/// This function returns true if the target allows unaligned stores. This is
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/// used in situations where an array copy/move/set is converted to a sequence
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/// of store operations. It ensures that such replacements don't generate
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/// code that causes an alignment error (trap) on the target machine.
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/// @brief Determine if the target supports unaligned stores.
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bool allowsUnalignedStores() const { return allowUnalignedStores; }
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/// This function returns true if the target allows unaligned memory accesses.
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/// This is used, for example, in situations where an array copy/move/set is
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/// converted to a sequence of store operations. It's use helps to ensure that
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/// such replacements don't generate code that causes an alignment error
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/// (trap) on the target machine.
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/// @brief Determine if the target supports unaligned memory accesses.
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bool allowsUnalignedMemoryAccesses() const
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{ return allowUnalignedMemoryAccesses; }
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//===--------------------------------------------------------------------===//
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// TargetLowering Configuration Methods - These methods should be invoked by
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@ -442,11 +444,11 @@ protected:
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/// @brief Specify maximum bytes of store instructions per memmove call.
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unsigned maxStoresPerMemMove;
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/// This field specifies whether the target machine permits unaligned stores.
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/// This is used to determine the size of store operations for copying
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/// small arrays and other similar tasks.
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/// @brief Indicate whether the target machine permits unaligned stores.
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bool allowUnalignedStores;
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/// This field specifies whether the target machine permits unaligned memory
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/// accesses. This is used, for example, to determine the size of store
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/// operations when copying small arrays and other similar tasks.
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/// @brief Indicate whether the target permits unaligned memory accesses.
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bool allowUnalignedMemoryAccesses;
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};
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} // end llvm namespace
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@ -27,8 +27,8 @@ TargetLowering::TargetLowering(TargetMachine &tm)
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ShiftAmountTy = SetCCResultTy = PointerTy = getValueType(TD.getIntPtrType());
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ShiftAmtHandling = Undefined;
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memset(RegClassForVT, 0,MVT::LAST_VALUETYPE*sizeof(TargetRegisterClass*));
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maxStoresPerMemSet = maxStoresPerMemCpy = maxStoresPerMemMove = 0;
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allowUnalignedStores = false;
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maxStoresPerMemSet = maxStoresPerMemCpy = maxStoresPerMemMove = 8;
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allowUnalignedMemoryAccesses = false;
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}
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TargetLowering::~TargetLowering() {}
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