#include "ARMTargetMachine.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
+#include "llvm/Instruction.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
// ARM Optimization Hooks
//===----------------------------------------------------------------------===//
+/// isLegalAddressExpression - Return true if the binary expression made up of
+/// specified opcode, operands, and type can be folded into target addressing
+/// mode for load / store of the given type.
+bool ARMTargetLowering::isLegalAddressExpression(unsigned Opc, Value *Op0,
+ Value *Op1, const Type *Ty) const {
+ if (ConstantInt *Op1C = dyn_cast<ConstantInt>(Op1)) {
+ if (Opc == Instruction::Add)
+ return isLegalAddressImmediate(Op1C->getSExtValue(), Ty);
+ if (Opc == Instruction::Sub)
+ return isLegalAddressImmediate(-Op1C->getSExtValue(), Ty);
+ }
+ return false;
+}
+
/// isLegalAddressImmediate - Return true if the integer value can be used
/// as the offset of the target addressing mode for load / store of the
/// given type.
virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
MachineBasicBlock *MBB);
+ /// isLegalAddressExpression - Return true if the binary expression made up
+ /// of specified opcode, operands, and type can be folded into target
+ /// addressing mode for load / store of the given type.
+ virtual bool isLegalAddressExpression(unsigned Opc, Value *Op0, Value *Op1,
+ const Type *Ty) const;
+
/// isLegalAddressImmediate - Return true if the integer value can be used
/// as the offset of the target addressing mode for load / store of the
/// given type.