forked from OSchip/llvm-project
82 lines
2.5 KiB
TableGen
82 lines
2.5 KiB
TableGen
//==-- SystemZSchedule.td - SystemZ Scheduling Definitions ----*- tblgen -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Scheduler resources
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// Resources ending with a '2' use that resource for 2 cycles. An instruction
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// using two such resources use the mapped unit for 4 cycles, and 2 is added
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// to the total number of uops of the sched class.
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// These three resources are used to express decoder grouping rules.
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// The number of decoder slots needed by an instructions is normally
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// one. For a cracked instruction (BeginGroup && !EndGroup) it is
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// two. Expanded instructions (BeginGroup && EndGroup) group alone.
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def GroupAlone : SchedWrite;
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def BeginGroup : SchedWrite;
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def EndGroup : SchedWrite;
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// Latencies, to make code a bit neater. If more than one resource is
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// used for an instruction, the greatest latency (not the sum) will be
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// output by Tablegen. Therefore, in such cases one of these resources
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// is needed.
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def Lat2 : SchedWrite;
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def Lat3 : SchedWrite;
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def Lat4 : SchedWrite;
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def Lat5 : SchedWrite;
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def Lat6 : SchedWrite;
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def Lat7 : SchedWrite;
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def Lat8 : SchedWrite;
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def Lat9 : SchedWrite;
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def Lat10 : SchedWrite;
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def Lat11 : SchedWrite;
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def Lat12 : SchedWrite;
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def Lat15 : SchedWrite;
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def Lat20 : SchedWrite;
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def Lat30 : SchedWrite;
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// Fixed-point
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def FXa : SchedWrite;
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def FXa2 : SchedWrite;
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def FXb : SchedWrite;
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def FXU : SchedWrite;
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// Load/store unit
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def LSU : SchedWrite;
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// Model a return without latency, otherwise if-converter will model
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// extra cost and abort (currently there is an assert that checks that
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// all instructions have at least one uop).
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def LSU_lat1 : SchedWrite;
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// Floating point unit (zEC12 and earlier)
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def FPU : SchedWrite;
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def FPU2 : SchedWrite;
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def DFU : SchedWrite;
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def DFU2 : SchedWrite;
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// Vector sub units (z13)
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def VecBF : SchedWrite;
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def VecBF2 : SchedWrite;
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def VecDF : SchedWrite;
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def VecDF2 : SchedWrite;
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def VecDFX : SchedWrite;
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def VecDFX2 : SchedWrite;
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def VecFPd : SchedWrite; // Blocking BFP div/sqrt unit.
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def VecMul : SchedWrite;
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def VecStr : SchedWrite;
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def VecXsPm : SchedWrite;
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// Virtual branching unit
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def VBU : SchedWrite;
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include "SystemZScheduleZ13.td"
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include "SystemZScheduleZEC12.td"
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include "SystemZScheduleZ196.td"
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