llvm::HazardRecognizer Class Reference
#include <ScheduleDAGSDNodes.h>
Public Types | |
| enum | HazardType { NoHazard, Hazard, NoopHazard } |
Public Member Functions | |
| virtual | ~HazardRecognizer () |
| virtual HazardType | getHazardType (SDNode *) |
| virtual void | EmitInstruction (SDNode *) |
| virtual void | AdvanceCycle () |
| virtual void | EmitNoop () |
Detailed Description
HazardRecognizer - This determines whether or not an instruction can be issued this cycle, and whether or not a noop needs to be inserted to handle the hazard.Definition at line 25 of file ScheduleDAGSDNodes.h.
Member Enumeration Documentation
Constructor & Destructor Documentation
| HazardRecognizer::~HazardRecognizer | ( | ) | [virtual] |
Definition at line 87 of file ScheduleDAGList.cpp.
Member Function Documentation
| virtual HazardType llvm::HazardRecognizer::getHazardType | ( | SDNode * | ) | [inline, virtual] |
getHazardType - Return the hazard type of emitting this node. There are three possible results. Either: NoHazard: it is legal to issue this instruction on this cycle. Hazard: issuing this instruction would stall the machine. If some other instruction is available, issue it first. NoopHazard: issuing this instruction would break the program. If some other instruction can be issued, do so, otherwise issue a noop.
Reimplemented in llvm::SPUHazardRecognizer, and llvm::PPCHazardRecognizer970.
Definition at line 42 of file ScheduleDAGSDNodes.h.
References NoHazard.
| virtual void llvm::HazardRecognizer::EmitInstruction | ( | SDNode * | ) | [inline, virtual] |
EmitInstruction - This callback is invoked when an instruction is emitted, to advance the hazard state.
Reimplemented in llvm::SPUHazardRecognizer, and llvm::PPCHazardRecognizer970.
Definition at line 48 of file ScheduleDAGSDNodes.h.
| virtual void llvm::HazardRecognizer::AdvanceCycle | ( | ) | [inline, virtual] |
AdvanceCycle - This callback is invoked when no instructions can be issued on this cycle without a hazard. This should increment the internal state of the hazard recognizer so that previously "Hazard" instructions will now not be hazards.
Reimplemented in llvm::SPUHazardRecognizer, and llvm::PPCHazardRecognizer970.
Definition at line 54 of file ScheduleDAGSDNodes.h.
| virtual void llvm::HazardRecognizer::EmitNoop | ( | ) | [inline, virtual] |
EmitNoop - This callback is invoked when a noop was added to the instruction stream.
Reimplemented in llvm::SPUHazardRecognizer, and llvm::PPCHazardRecognizer970.
Definition at line 58 of file ScheduleDAGSDNodes.h.
The documentation for this class was generated from the following files:
1.5.6