1//==-- SystemZSchedule.td - SystemZ Scheduling Definitions ----*- tblgen -*-==//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// Scheduler resources
11
12// These resources are used to express decoder grouping rules.  The number of
13// decoder slots needed by an instructions is normally one, but there are
14// exceptions.
15def NormalGr   : SchedWrite;
16def Cracked    : SchedWrite;
17def GroupAlone : SchedWrite;
18def BeginGroup : SchedWrite;
19def EndGroup   : SchedWrite;
20
21// A SchedWrite added to other SchedWrites to make LSU latency parameterizable.
22def LSULatency : SchedWrite;
23
24// Operand WriteLatencies.
25foreach L = 1 - 30 in def "WLat"#L : SchedWrite;
26
27foreach L = 1 - 16 in
28  def "WLat"#L#"LSU" : WriteSequence<[!cast<SchedWrite>("WLat"#L),
29                                      LSULatency]>;
30
31// ReadAdvances, used for the register operand next to a memory operand,
32// modelling that the register operand is needed later than the address
33// operands.
34def RegReadAdv : SchedRead;
35
36foreach Num = ["", "2", "3", "4", "5", "6"] in {
37  // Fixed-point units
38  def "FXa"#Num : SchedWrite;
39  def "FXb"#Num : SchedWrite;
40  def "FXU"#Num : SchedWrite;
41  // Load/store unit
42  def "LSU"#Num : SchedWrite;
43  // Vector sub units (z13 and later)
44  def "VecBF"#Num : SchedWrite;
45  def "VecDF"#Num : SchedWrite;
46  def "VecDFX"#Num : SchedWrite;
47  def "VecMul"#Num : SchedWrite;
48  def "VecStr"#Num : SchedWrite;
49  def "VecXsPm"#Num : SchedWrite;
50  // Floating point unit (zEC12 and earlier)
51  def "FPU"#Num : SchedWrite;
52  def "DFU"#Num : SchedWrite;
53}
54
55def VecFPd : SchedWrite; // Blocking BFP div/sqrt unit.
56
57def VBU : SchedWrite; // Virtual branching unit
58
59def MCD : SchedWrite; // Millicode
60
61include "SystemZScheduleZ14.td"
62include "SystemZScheduleZ13.td"
63include "SystemZScheduleZEC12.td"
64include "SystemZScheduleZ196.td"
65