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Diffstat (limited to 'lib/Target/RISCV/RISCVSubtarget.cpp')
-rw-r--r-- | lib/Target/RISCV/RISCVSubtarget.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/Target/RISCV/RISCVSubtarget.cpp b/lib/Target/RISCV/RISCVSubtarget.cpp new file mode 100644 index 00000000000..b221ea84a33 --- /dev/null +++ b/lib/Target/RISCV/RISCVSubtarget.cpp @@ -0,0 +1,48 @@ +//===-- RISCVSubtarget.cpp - RISCV Subtarget Information ------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the RISCV specific subclass of TargetSubtargetInfo. +// +//===----------------------------------------------------------------------===// + +#include "RISCVSubtarget.h" +#include "RISCV.h" +#include "RISCVFrameLowering.h" +#include "llvm/Support/TargetRegistry.h" + +using namespace llvm; + +#define DEBUG_TYPE "riscv-subtarget" + +#define GET_SUBTARGETINFO_TARGET_DESC +#define GET_SUBTARGETINFO_CTOR +#include "RISCVGenSubtargetInfo.inc" + +void RISCVSubtarget::anchor() {} + +RISCVSubtarget &RISCVSubtarget::initializeSubtargetDependencies(StringRef CPU, + StringRef FS, + bool Is64Bit) { + // Determine default and user-specified characteristics + std::string CPUName = CPU; + if (CPUName.empty()) + CPUName = Is64Bit ? "generic-rv64" : "generic-rv32"; + ParseSubtargetFeatures(CPUName, FS); + if (Is64Bit) { + XLenVT = MVT::i64; + XLen = 64; + } + return *this; +} + +RISCVSubtarget::RISCVSubtarget(const Triple &TT, const std::string &CPU, + const std::string &FS, const TargetMachine &TM) + : RISCVGenSubtargetInfo(TT, CPU, FS), + FrameLowering(initializeSubtargetDependencies(CPU, FS, TT.isArch64Bit())), + InstrInfo(), RegInfo(getHwMode()), TLInfo(TM, *this) {} |