Change the names of member variables per Chris' instructions, and document
them more clearly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23118 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index 590de20..7c28391 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -210,12 +210,14 @@
/// @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 @@
/// @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
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index d3fa34d..3c2a09c 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -27,8 +27,8 @@
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() {}