1 //===- ARMInstrInfo.cpp - ARM Instruction Information -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the "Instituto Nokia de Tecnologia" and
6 // is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // This file contains the ARM implementation of the TargetInstrInfo class.
13 //===----------------------------------------------------------------------===//
15 #include "ARMInstrInfo.h"
17 #include "llvm/CodeGen/MachineInstrBuilder.h"
18 #include "ARMGenInstrInfo.inc"
21 ARMInstrInfo::ARMInstrInfo()
22 : TargetInstrInfo(ARMInsts, sizeof(ARMInsts)/sizeof(ARMInsts[0])) {
25 /// Return true if the instruction is a register to register move and
26 /// leave the source and dest operands in the passed parameters.
28 bool ARMInstrInfo::isMoveInstr(const MachineInstr &MI,
29 unsigned &SrcReg, unsigned &DstReg) const {
30 // We look for 3 kinds of patterns here:
33 // fmovs or FpMOVD (pseudo double move).
34 assert(0 && "not implemented");
38 /// isLoadFromStackSlot - If the specified machine instruction is a direct
39 /// load from a stack slot, return the virtual or physical register number of
40 /// the destination along with the FrameIndex of the loaded stack slot. If
41 /// not, return 0. This predicate must return 0 if the instruction has
42 /// any side effects other than loading from the stack slot.
43 unsigned ARMInstrInfo::isLoadFromStackSlot(MachineInstr *MI,
44 int &FrameIndex) const {
45 assert(0 && "not implemented");
49 /// isStoreToStackSlot - If the specified machine instruction is a direct
50 /// store to a stack slot, return the virtual or physical register number of
51 /// the source reg along with the FrameIndex of the loaded stack slot. If
52 /// not, return 0. This predicate must return 0 if the instruction has
53 /// any side effects other than storing to the stack slot.
54 unsigned ARMInstrInfo::isStoreToStackSlot(MachineInstr *MI,
55 int &FrameIndex) const {
56 assert(0 && "not implemented");