mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-13 20:32:21 +00:00
cd52a7a381
Apparently, the style needs to be agreed upon first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240390 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
//===-- ARMFeatures.h - Checks for ARM instruction features -----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the code shared between ARM CodeGen and ARM MC
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_ARM_ARMFEATURES_H
|
|
#define LLVM_LIB_TARGET_ARM_ARMFEATURES_H
|
|
|
|
#include "MCTargetDesc/ARMMCTargetDesc.h"
|
|
|
|
namespace llvm {
|
|
|
|
template<typename InstrType> // could be MachineInstr or MCInst
|
|
bool IsCPSRDead(InstrType *Instr);
|
|
|
|
template<typename InstrType> // could be MachineInstr or MCInst
|
|
inline bool isV8EligibleForIT(InstrType *Instr) {
|
|
switch (Instr->getOpcode()) {
|
|
default:
|
|
return false;
|
|
case ARM::tADC:
|
|
case ARM::tADDi3:
|
|
case ARM::tADDi8:
|
|
case ARM::tADDrr:
|
|
case ARM::tAND:
|
|
case ARM::tASRri:
|
|
case ARM::tASRrr:
|
|
case ARM::tBIC:
|
|
case ARM::tEOR:
|
|
case ARM::tLSLri:
|
|
case ARM::tLSLrr:
|
|
case ARM::tLSRri:
|
|
case ARM::tLSRrr:
|
|
case ARM::tMOVi8:
|
|
case ARM::tMUL:
|
|
case ARM::tMVN:
|
|
case ARM::tORR:
|
|
case ARM::tROR:
|
|
case ARM::tRSB:
|
|
case ARM::tSBC:
|
|
case ARM::tSUBi3:
|
|
case ARM::tSUBi8:
|
|
case ARM::tSUBrr:
|
|
// Outside of an IT block, these set CPSR.
|
|
return IsCPSRDead(Instr);
|
|
case ARM::tADDrSPi:
|
|
case ARM::tCMNz:
|
|
case ARM::tCMPi8:
|
|
case ARM::tCMPr:
|
|
case ARM::tLDRBi:
|
|
case ARM::tLDRBr:
|
|
case ARM::tLDRHi:
|
|
case ARM::tLDRHr:
|
|
case ARM::tLDRSB:
|
|
case ARM::tLDRSH:
|
|
case ARM::tLDRi:
|
|
case ARM::tLDRr:
|
|
case ARM::tLDRspi:
|
|
case ARM::tSTRBi:
|
|
case ARM::tSTRBr:
|
|
case ARM::tSTRHi:
|
|
case ARM::tSTRHr:
|
|
case ARM::tSTRi:
|
|
case ARM::tSTRr:
|
|
case ARM::tSTRspi:
|
|
case ARM::tTST:
|
|
return true;
|
|
// there are some "conditionally deprecated" opcodes
|
|
case ARM::tADDspr:
|
|
case ARM::tBLXr:
|
|
return Instr->getOperand(2).getReg() != ARM::PC;
|
|
// ADD PC, SP and BLX PC were always unpredictable,
|
|
// now on top of it they're deprecated
|
|
case ARM::tADDrSP:
|
|
case ARM::tBX:
|
|
return Instr->getOperand(0).getReg() != ARM::PC;
|
|
case ARM::tADDhirr:
|
|
return Instr->getOperand(0).getReg() != ARM::PC &&
|
|
Instr->getOperand(2).getReg() != ARM::PC;
|
|
case ARM::tCMPhir:
|
|
case ARM::tMOVr:
|
|
return Instr->getOperand(0).getReg() != ARM::PC &&
|
|
Instr->getOperand(1).getReg() != ARM::PC;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|