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author | Justin Holewinski <jholewinski@nvidia.com> | 2012-05-04 20:18:50 +0000 |
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committer | Justin Holewinski <jholewinski@nvidia.com> | 2012-05-04 20:18:50 +0000 |
commit | 49683f3c961379fbc088871a5d6304950f1f1cbc (patch) | |
tree | 830fa1ee9c992ef4645863d128be912ce2bfc987 /lib/Target/NVPTX/NVPTXRegisterInfo.h | |
parent | 2c7e5c714c8675f757c4936a3a2132c2466a626c (diff) | |
download | llvm-49683f3c961379fbc088871a5d6304950f1f1cbc.tar.gz llvm-49683f3c961379fbc088871a5d6304950f1f1cbc.tar.bz2 llvm-49683f3c961379fbc088871a5d6304950f1f1cbc.tar.xz |
This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDIA PTX 3.0. This back-end will (eventually) replace the current PTX back-end, while maintaining compatibility with it.
The new target machines are:
nvptx (old ptx32) => 32-bit PTX
nvptx64 (old ptx64) => 64-bit PTX
The sources are based on the internal NVIDIA NVPTX back-end, and
contain more functionality than the current PTX back-end currently
provides.
NV_CONTRIB
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156196 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/NVPTX/NVPTXRegisterInfo.h')
-rw-r--r-- | lib/Target/NVPTX/NVPTXRegisterInfo.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/Target/NVPTX/NVPTXRegisterInfo.h b/lib/Target/NVPTX/NVPTXRegisterInfo.h new file mode 100644 index 0000000000..e8b587ce16 --- /dev/null +++ b/lib/Target/NVPTX/NVPTXRegisterInfo.h @@ -0,0 +1,94 @@ +//===- NVPTXRegisterInfo.h - NVPTX Register Information Impl ----*- 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 NVPTX implementation of the TargetRegisterInfo class. +// +//===----------------------------------------------------------------------===// + +#ifndef NVPTXREGISTERINFO_H +#define NVPTXREGISTERINFO_H + +#include "ManagedStringPool.h" +#include "llvm/Target/TargetRegisterInfo.h" + + +#define GET_REGINFO_HEADER +#include "NVPTXGenRegisterInfo.inc" +#include "llvm/Target/TargetRegisterInfo.h" +#include <sstream> + +namespace llvm { + +// Forward Declarations. +class TargetInstrInfo; +class NVPTXSubtarget; + +class NVPTXRegisterInfo : public NVPTXGenRegisterInfo { +private: + const TargetInstrInfo &TII; + const NVPTXSubtarget &ST; + bool Is64Bit; + // Hold Strings that can be free'd all together with NVPTXRegisterInfo + ManagedStringPool ManagedStrPool; + +public: + NVPTXRegisterInfo(const TargetInstrInfo &tii, + const NVPTXSubtarget &st); + + + //------------------------------------------------------ + // Pure virtual functions from TargetRegisterInfo + //------------------------------------------------------ + + // NVPTX callee saved registers + virtual const uint16_t* + getCalleeSavedRegs(const MachineFunction *MF = 0) const; + + // NVPTX callee saved register classes + virtual const TargetRegisterClass* const * + getCalleeSavedRegClasses(const MachineFunction *MF) const; + + virtual BitVector getReservedRegs(const MachineFunction &MF) const; + + virtual void eliminateFrameIndex(MachineBasicBlock::iterator MI, + int SPAdj, + RegScavenger *RS=NULL) const; + + void eliminateCallFramePseudoInstr(MachineFunction &MF, + MachineBasicBlock &MBB, + MachineBasicBlock::iterator I) const; + + virtual int getDwarfRegNum(unsigned RegNum, bool isEH) const; + virtual unsigned getFrameRegister(const MachineFunction &MF) const; + virtual unsigned getRARegister() const; + + ManagedStringPool *getStrPool() const { + return const_cast<ManagedStringPool *>(&ManagedStrPool); + } + + const char *getName(unsigned RegNo) const { + std::stringstream O; + O << "reg" << RegNo; + return getStrPool()->getManagedString(O.str().c_str())->c_str(); + } + +}; + + +std::string getNVPTXRegClassName (const TargetRegisterClass *RC); +std::string getNVPTXRegClassStr (const TargetRegisterClass *RC); +bool isNVPTXVectorRegClass (const TargetRegisterClass *RC); +std::string getNVPTXElemClassName (const TargetRegisterClass *RC); +int getNVPTXVectorSize (const TargetRegisterClass *RC); +const TargetRegisterClass *getNVPTXElemClass(const TargetRegisterClass *RC); + +} // end namespace llvm + + +#endif |