mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-10 17:29:44 +00:00
745ca1eed7
Use subreg_hNN and subreg_lNN for the high and low NN bits of a register. List the low registers first, so that subreg_l32 also means the low 32 bits of a 128-bit register. Floats are stored in the upper 32 bits of a 64-bit register, so they should use subreg_h32 rather than subreg_l32. No behavioral change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191659 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
//===-- SystemZRegisterInfo.h - SystemZ register information ----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SystemZREGISTERINFO_H
|
|
#define SystemZREGISTERINFO_H
|
|
|
|
#include "SystemZ.h"
|
|
#include "llvm/Target/TargetRegisterInfo.h"
|
|
|
|
#define GET_REGINFO_HEADER
|
|
#include "SystemZGenRegisterInfo.inc"
|
|
|
|
namespace llvm {
|
|
|
|
namespace SystemZ {
|
|
// Return the subreg to use for referring to the even and odd registers
|
|
// in a GR128 pair. Is32Bit says whether we want a GR32 or GR64.
|
|
inline unsigned even128(bool Is32bit) {
|
|
return Is32bit ? subreg_hl32 : subreg_h64;
|
|
}
|
|
inline unsigned odd128(bool Is32bit) {
|
|
return Is32bit ? subreg_l32 : subreg_l64;
|
|
}
|
|
}
|
|
|
|
class SystemZSubtarget;
|
|
class SystemZInstrInfo;
|
|
|
|
struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
|
|
private:
|
|
SystemZTargetMachine &TM;
|
|
|
|
public:
|
|
SystemZRegisterInfo(SystemZTargetMachine &tm);
|
|
|
|
// Override TargetRegisterInfo.h.
|
|
virtual bool requiresRegisterScavenging(const MachineFunction &MF) const
|
|
LLVM_OVERRIDE {
|
|
return true;
|
|
}
|
|
virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const
|
|
LLVM_OVERRIDE {
|
|
return true;
|
|
}
|
|
virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const
|
|
LLVM_OVERRIDE {
|
|
return true;
|
|
}
|
|
virtual const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0)
|
|
const LLVM_OVERRIDE;
|
|
virtual BitVector getReservedRegs(const MachineFunction &MF)
|
|
const LLVM_OVERRIDE;
|
|
virtual void eliminateFrameIndex(MachineBasicBlock::iterator MI,
|
|
int SPAdj, unsigned FIOperandNum,
|
|
RegScavenger *RS) const LLVM_OVERRIDE;
|
|
virtual unsigned getFrameRegister(const MachineFunction &MF) const
|
|
LLVM_OVERRIDE;
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|