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Fold the useful features of alist and alist_node into ilist, and

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a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54146 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-07-28 21:51:04 +00:00
parent 80e051dfde
commit fed90b6d09
33 changed files with 340 additions and 815 deletions
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32
include/llvm/CodeGen/SelectionDAGNodes.h
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@@ -25,7 +25,8 @@
#include "llvm/ADT/iterator.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/alist.h"
#include "llvm/ADT/ilist_node.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/Support/Allocator.h"
@@ -43,6 +44,7 @@ class SDNode;
class CompileUnitDesc;
template <typename T> struct DenseMapInfo;
template <typename T> struct simplify_type;
template <typename T> class ilist_traits;
/// SDVTList - This represents a list of ValueType's that has been intern'd by
/// a SelectionDAG. Instances of this simple value class are returned by
@@ -1028,7 +1030,7 @@ public:
/// SDNode - Represents one node in the SelectionDAG.
///
class SDNode : public FoldingSetNode {
class SDNode : public FoldingSetNode, public ilist_node<SDNode> {
private:
/// NodeType - The operation that this node performs.
///
@@ -1268,6 +1270,7 @@ public:
protected:
friend class SelectionDAG;
friend class ilist_traits<SDNode>;
/// getValueTypeList - Return a pointer to the specified value type.
///
@@ -2236,27 +2239,10 @@ template <> struct GraphTraits<SDNode*> {
///
typedef LoadSDNode LargestSDNode;
// alist_traits specialization for pool-allocating SDNodes.
template <>
class alist_traits<SDNode, LargestSDNode> {
typedef alist_iterator<SDNode, LargestSDNode> iterator;
public:
// Pool-allocate and recycle SDNodes.
typedef RecyclingAllocator<BumpPtrAllocator, SDNode, LargestSDNode>
AllocatorType;
// Allocate the allocator immediately inside the traits class.
AllocatorType Allocator;
void addNodeToList(SDNode*) {}
void removeNodeFromList(SDNode*) {}
void transferNodesFromList(alist_traits &, iterator, iterator) {}
void deleteNode(SDNode *N) {
N->~SDNode();
Allocator.Deallocate(N);
}
};
/// MostAlignedSDNode - The SDNode class with the greatest alignment
/// requirement.
///
typedef ConstantSDNode MostAlignedSDNode;
namespace ISD {
/// isNormalLoad - Returns true if the specified node is a non-extending