ARM backend contribution from Apple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33353 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
new file mode 100644
index 0000000000..a9143d4ddc
--- /dev/null
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -0,0 +1,50 @@
+//===- ARMConstantPoolValue.h - ARM constantpool value ----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Evan Cheng and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the ARM specific constantpool value class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
+#define LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
+
+#include "llvm/CodeGen/MachineConstantPool.h"
+
+namespace llvm {
+
+/// ARMConstantPoolValue - ARM specific constantpool value. This is used to
+/// represent PC relative displacement between the address of the load
+/// instruction and the global value being loaded, i.e. (&GV-(LPIC+8)).
+class ARMConstantPoolValue : public MachineConstantPoolValue {
+  GlobalValue *GV;         // GlobalValue being loaded.
+  unsigned LabelId;        // Label id of the load.
+  bool isNonLazyPtr;       // True if loading a Mac OS X non_lazy_ptr stub.
+  unsigned char PCAdjust;  // Extra adjustment if constantpool is pc relative.
+                           // 8 for ARM, 4 for Thumb.
+
+public:
+  ARMConstantPoolValue(GlobalValue *gv, unsigned id, bool isNonLazy = false,
+                       unsigned char PCAdj = 0);
+
+  GlobalValue *getGV() const { return GV; }
+  unsigned getLabelId() const { return LabelId; }
+  bool isNonLazyPointer() const { return isNonLazyPtr; }
+  unsigned char getPCAdjustment() const { return PCAdjust; }
+
+  virtual int getExistingMachineCPValue(MachineConstantPool *CP,
+                                        unsigned Alignment);
+
+  virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID);
+
+  virtual void print(std::ostream &O) const;
+};
+  
+}
+
+#endif