1 //===-- ARMTargetMachine.cpp - Define TargetMachine for ARM ---------------===//
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 //===----------------------------------------------------------------------===//
12 //===----------------------------------------------------------------------===//
16 #include "llvm/CodeGen/MachineInstrBuilder.h"
17 #include "llvm/CodeGen/MachineFunctionPass.h"
18 #include "llvm/Support/Compiler.h"
23 class VISIBILITY_HIDDEN FixMul : public MachineFunctionPass {
24 virtual bool runOnMachineFunction(MachineFunction &MF);
28 FunctionPass *llvm::createARMFixMulPass() { return new FixMul(); }
30 bool FixMul::runOnMachineFunction(MachineFunction &MF) {
33 for (MachineFunction::iterator BB = MF.begin(), E = MF.end();
35 MachineBasicBlock &MBB = *BB;
37 for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
41 if (MI->getOpcode() == ARM::MUL) {
42 MachineOperand &RdOp = MI->getOperand(0);
43 MachineOperand &RmOp = MI->getOperand(1);
44 MachineOperand &RsOp = MI->getOperand(2);
46 unsigned Rd = RdOp.getReg();
47 unsigned Rm = RmOp.getReg();
48 unsigned Rs = RsOp.getReg();
56 BuildMI(MBB, I, ARM::MOV, 3, ARM::R12).addReg(Rm).addImm(0)
57 .addImm(ARMShift::LSL);
58 RmOp.setReg(ARM::R12);