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Diffstat (limited to 'contrib/llvm/lib/Target/ARM/ARMHazardRecognizer.h')
-rw-r--r-- | contrib/llvm/lib/Target/ARM/ARMHazardRecognizer.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/ARM/ARMHazardRecognizer.h b/contrib/llvm/lib/Target/ARM/ARMHazardRecognizer.h new file mode 100644 index 0000000..2bc218d --- /dev/null +++ b/contrib/llvm/lib/Target/ARM/ARMHazardRecognizer.h @@ -0,0 +1,54 @@ +//===-- ARMHazardRecognizer.h - ARM Hazard Recognizers ----------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines hazard recognizers for scheduling ARM functions. +// +//===----------------------------------------------------------------------===// + +#ifndef ARMHAZARDRECOGNIZER_H +#define ARMHAZARDRECOGNIZER_H + +#include "llvm/CodeGen/ScoreboardHazardRecognizer.h" + +namespace llvm { + +class ARMBaseInstrInfo; +class ARMBaseRegisterInfo; +class ARMSubtarget; +class MachineInstr; + +class ARMHazardRecognizer : public ScoreboardHazardRecognizer { + const ARMBaseInstrInfo &TII; + const ARMBaseRegisterInfo &TRI; + const ARMSubtarget &STI; + + MachineInstr *LastMI; + unsigned FpMLxStalls; + unsigned ITBlockSize; // No. of MIs in current IT block yet to be scheduled. + MachineInstr *ITBlockMIs[4]; + +public: + ARMHazardRecognizer(const InstrItineraryData *ItinData, + const ARMBaseInstrInfo &tii, + const ARMBaseRegisterInfo &tri, + const ARMSubtarget &sti, + const ScheduleDAG *DAG) : + ScoreboardHazardRecognizer(ItinData, DAG, "post-RA-sched"), TII(tii), + TRI(tri), STI(sti), LastMI(0), ITBlockSize(0) {} + + virtual HazardType getHazardType(SUnit *SU, int Stalls); + virtual void Reset(); + virtual void EmitInstruction(SUnit *SU); + virtual void AdvanceCycle(); + virtual void RecedeCycle(); +}; + +} // end namespace llvm + +#endif // ARMHAZARDRECOGNIZER_H |