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66 lines
2.1 KiB
TableGen
66 lines
2.1 KiB
TableGen
//==-- SystemZSchedule.td - SystemZ Scheduling Definitions ----*- tblgen -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Scheduler resources
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// These resources are used to express decoder grouping rules. The number of
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// decoder slots needed by an instructions is normally one, but there are
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// exceptions.
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def NormalGr : SchedWrite;
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def Cracked : SchedWrite;
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def GroupAlone : SchedWrite;
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def GroupAlone2 : SchedWrite;
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def GroupAlone3 : SchedWrite;
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def BeginGroup : SchedWrite;
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def EndGroup : SchedWrite;
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// A SchedWrite added to other SchedWrites to make LSU latency parameterizable.
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def LSULatency : SchedWrite;
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// Operand WriteLatencies.
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foreach L = 1 - 30 in def "WLat"#L : SchedWrite;
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foreach L = 1 - 16 in
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def "WLat"#L#"LSU" : WriteSequence<[!cast<SchedWrite>("WLat"#L),
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LSULatency]>;
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// ReadAdvances, used for the register operand next to a memory operand,
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// modelling that the register operand is needed later than the address
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// operands.
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def RegReadAdv : SchedRead;
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foreach Num = ["", "2", "3", "4", "5", "6"] in {
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// Fixed-point units
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def "FXa"#Num : SchedWrite;
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def "FXb"#Num : SchedWrite;
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def "FXU"#Num : SchedWrite;
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// Load/store unit
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def "LSU"#Num : SchedWrite;
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// Vector sub units (z13 and later)
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def "VecBF"#Num : SchedWrite;
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def "VecDF"#Num : SchedWrite;
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def "VecDFX"#Num : SchedWrite;
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def "VecMul"#Num : SchedWrite;
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def "VecStr"#Num : SchedWrite;
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def "VecXsPm"#Num : SchedWrite;
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// Floating point unit (zEC12 and earlier)
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def "FPU"#Num : SchedWrite;
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def "DFU"#Num : SchedWrite;
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}
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def VecFPd : SchedWrite; // Blocking BFP div/sqrt unit.
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def VBU : SchedWrite; // Virtual branching unit
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def MCD : SchedWrite; // Millicode
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include "SystemZScheduleZ14.td"
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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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