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author | Andrew Trick <atrick@apple.com> | 2012-09-14 20:26:46 +0000 |
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committer | Andrew Trick <atrick@apple.com> | 2012-09-14 20:26:46 +0000 |
commit | 99ab6c6035aec3c0e9b0cc5b76a4666fc5fd7b7b (patch) | |
tree | 61b4450cacacf4c8c86fac236218ded5f54871bd /include/llvm/CodeGen/TargetSchedule.h | |
parent | 72d048b69705f01d48bdef7b235ec96b24290767 (diff) | |
download | llvm-99ab6c6035aec3c0e9b0cc5b76a4666fc5fd7b7b.tar.gz llvm-99ab6c6035aec3c0e9b0cc5b76a4666fc5fd7b7b.tar.bz2 llvm-99ab6c6035aec3c0e9b0cc5b76a4666fc5fd7b7b.tar.xz |
TargetSchedModel interface. To be implemented...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163934 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/TargetSchedule.h')
-rw-r--r-- | include/llvm/CodeGen/TargetSchedule.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/TargetSchedule.h b/include/llvm/CodeGen/TargetSchedule.h new file mode 100644 index 0000000000..4cf6f778a6 --- /dev/null +++ b/include/llvm/CodeGen/TargetSchedule.h @@ -0,0 +1,63 @@ +//===-- llvm/CodeGen/TargetSchedule.h - Sched Machine Model -----*- 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 a wrapper around MCSchedModel that allows the interface to +// benefit from information currently only available in TargetInstrInfo. +// Ideally, the scheduling interface would be fully defined in the MC layter. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_TARGET_TARGETSCHEDMODEL_H +#define LLVM_TARGET_TARGETSCHEDMODEL_H + +#include "llvm/MC/MCSchedule.h" +#include "llvm/MC/MCInstrItineraries.h" + +namespace llvm { + +class TargetRegisterInfo; +class TargetSubtargetInfo; +class TargetInstrInfo; +class MachineInstr; + +/// Provide an instruction scheduling machine model to CodeGen passes. +class TargetSchedModel { + // For efficiency, hold a copy of the statically defined MCSchedModel for this + // processor. + MCSchedModel SchedModel; + InstrItineraryData InstrItins; + const TargetSubtargetInfo *STI; + const TargetInstrInfo *TII; +public: + TargetSchedModel(): STI(0), TII(0) {} + + void init(const MCSchedModel &sm, const TargetSubtargetInfo *sti, + const TargetInstrInfo *tii); + + const TargetInstrInfo *getInstrInfo() const { return TII; } + + /// Return true if this machine model includes an instruction-level scheduling + /// model. This is more detailed than the course grain IssueWidth and default + /// latency properties, but separate from the per-cycle itinerary data. + bool hasInstrSchedModel() const { + return SchedModel.hasInstrSchedModel(); + } + + /// Return true if this machine model includes cycle-to-cycle itinerary + /// data. This models scheduling at each stage in the processor pipeline. + bool hasInstrItineraries() const { + return SchedModel.hasInstrItineraries(); + } + + unsigned getProcessorID() const { return SchedModel.getProcessorID(); } +}; + +} // namespace llvm + +#endif |