X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=include%2Fllvm%2FCodeGen%2FMachineMemOperand.h;h=ddb127120f207c089b944a7a3be8affb812a8132;hb=b09c146b116359616f6cbd4c8b3328607e00ff42;hp=b9b35e6152bdf493973ddb22ec53cb573617d0ea;hpb=e8e2e80f40495fdd5ad475beb54fcf0989b6b7c5;p=oota-llvm.git

diff --git a/include/llvm/CodeGen/MachineMemOperand.h b/include/llvm/CodeGen/MachineMemOperand.h
index b9b35e6152b..ddb127120f2 100644
--- a/include/llvm/CodeGen/MachineMemOperand.h
+++ b/include/llvm/CodeGen/MachineMemOperand.h
@@ -16,12 +16,13 @@
 #ifndef LLVM_CODEGEN_MACHINEMEMOPERAND_H
 #define LLVM_CODEGEN_MACHINEMEMOPERAND_H
 
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
 
 namespace llvm {
 
 class Value;
 class FoldingSetNodeID;
+class MDNode;
 class raw_ostream;
 
 /// MachinePointerInfo - This class contains a discriminated union of
@@ -29,9 +30,44 @@ class raw_ostream;
 /// or to virtual locations (such as frame indices) that are exposed during
 /// codegen.
 struct MachinePointerInfo {
+  /// V - This is the IR pointer value for the access, or it is null if unknown.
+  /// If this is null, then the access is to a pointer in the default address
+  /// space.
   const Value *V;
+  
+  /// Offset - This is an offset from the base Value*.
   int64_t Offset;
-  MachinePointerInfo(const Value *v, int64_t offset) : V(v), Offset(offset) {}
+  
+  explicit MachinePointerInfo(const Value *v = 0, int64_t offset = 0)
+    : V(v), Offset(offset) {}
+  
+  MachinePointerInfo getWithOffset(int64_t O) const {
+    if (V == 0) return MachinePointerInfo(0, 0);
+    return MachinePointerInfo(V, Offset+O);
+  }
+  
+  /// getAddrSpace - Return the LLVM IR address space number that this pointer
+  /// points into.
+  unsigned getAddrSpace() const;
+  
+  /// getConstantPool - Return a MachinePointerInfo record that refers to the
+  /// constant pool.
+  static MachinePointerInfo getConstantPool();
+
+  /// getFixedStack - Return a MachinePointerInfo record that refers to the
+  /// the specified FrameIndex.
+  static MachinePointerInfo getFixedStack(int FI, int64_t offset = 0);
+  
+  /// getJumpTable - Return a MachinePointerInfo record that refers to a
+  /// jump table entry.
+  static MachinePointerInfo getJumpTable();
+  
+  /// getGOT - Return a MachinePointerInfo record that refers to a
+  /// GOT entry.
+  static MachinePointerInfo getGOT();
+  
+  /// getStack - stack pointer relative access.
+  static MachinePointerInfo getStack(int64_t Offset);
 };
   
   
@@ -47,6 +83,8 @@ class MachineMemOperand {
   MachinePointerInfo PtrInfo;
   uint64_t Size;
   unsigned Flags;
+  const MDNode *TBAAInfo;
+  const MDNode *Ranges;
 
 public:
   /// Flags values. These may be or'd together.
@@ -59,15 +97,20 @@ public:
     MOVolatile = 4,
     /// The memory access is non-temporal.
     MONonTemporal = 8,
+    /// The memory access is invariant.
+    MOInvariant = 16,
     // This is the number of bits we need to represent flags.
-    MOMaxBits = 4
+    MOMaxBits = 5
   };
 
   /// MachineMemOperand - Construct an MachineMemOperand object with the
-  /// specified address Value, flags, offset, size, and base alignment.
-  MachineMemOperand(const Value *v, unsigned int f, int64_t o, uint64_t s,
-                    unsigned int base_alignment);
+  /// specified PtrInfo, flags, size, and base alignment.
+  MachineMemOperand(MachinePointerInfo PtrInfo, unsigned flags, uint64_t s,
+                    unsigned base_alignment, const MDNode *TBAAInfo = 0,
+                    const MDNode *Ranges = 0);
 
+  const MachinePointerInfo &getPointerInfo() const { return PtrInfo; }
+  
   /// getValue - Return the base address of the memory access. This may either
   /// be a normal LLVM IR Value, or one of the special values used in CodeGen.
   /// Special values are those obtained via
@@ -96,10 +139,26 @@ public:
   /// base address, without the offset.
   uint64_t getBaseAlignment() const { return (1u << (Flags >> MOMaxBits)) >> 1; }
 
+  /// getTBAAInfo - Return the TBAA tag for the memory reference.
+  const MDNode *getTBAAInfo() const { return TBAAInfo; }
+
+  /// getRanges - Return the range tag for the memory reference.
+  const MDNode *getRanges() const { return Ranges; }
+
   bool isLoad() const { return Flags & MOLoad; }
   bool isStore() const { return Flags & MOStore; }
   bool isVolatile() const { return Flags & MOVolatile; }
   bool isNonTemporal() const { return Flags & MONonTemporal; }
+  bool isInvariant() const { return Flags & MOInvariant; }
+
+  /// isUnordered - Returns true if this memory operation doesn't have any
+  /// ordering constraints other than normal aliasing. Volatile and atomic
+  /// memory operations can't be reordered.
+  ///
+  /// Currently, we don't model the difference between volatile and atomic
+  /// operations. They should retain their ordering relative to all memory
+  /// operations.
+  bool isUnordered() const { return !isVolatile(); }
 
   /// refineAlignment - Update this MachineMemOperand to reflect the alignment
   /// of MMO, if it has a greater alignment. This must only be used when the