1 //===--------------------- PipelinePrinter.cpp ------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 /// \file
9 ///
10 /// This file implements the PipelinePrinter interface.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #include "PipelinePrinter.h"
15 #include "CodeRegion.h"
16 #include "Views/InstructionView.h"
17 
18 namespace llvm {
19 namespace mca {
20 
21 void PipelinePrinter::printRegionHeader(llvm::raw_ostream &OS) const {
22   StringRef RegionName;
23   if (!Region.getDescription().empty())
24     RegionName = Region.getDescription();
25 
26   OS << "\n[" << RegionIdx << "] Code Region";
27   if (!RegionName.empty())
28     OS << " - " << RegionName;
29   OS << "\n\n";
30 }
31 
32 json::Object PipelinePrinter::getJSONReportRegion() const {
33   json::Object JO;
34 
35   StringRef RegionName = "";
36   if (!Region.getDescription().empty())
37     RegionName = Region.getDescription();
38 
39   JO.try_emplace("Name", RegionName);
40   for (const auto &V : Views)
41     if (V->isSerializable())
42       JO.try_emplace(V->getNameAsString().str(), V->toJSON());
43 
44   return JO;
45 }
46 
47 json::Object PipelinePrinter::getJSONSimulationParameters() const {
48   json::Object SimParameters({{"-mcpu", STI.getCPU()},
49                               {"-mtriple", STI.getTargetTriple().getTriple()},
50                               {"-march", STI.getTargetTriple().getArchName()}});
51 
52   const MCSchedModel &SM = STI.getSchedModel();
53   if (!SM.isOutOfOrder())
54     return SimParameters;
55 
56   if (PO.RegisterFileSize)
57     SimParameters.try_emplace("-register-file-size", PO.RegisterFileSize);
58 
59   if (!PO.AssumeNoAlias)
60     SimParameters.try_emplace("-noalias", PO.AssumeNoAlias);
61 
62   if (PO.DecodersThroughput)
63     SimParameters.try_emplace("-decoder-throughput", PO.DecodersThroughput);
64 
65   if (PO.MicroOpQueueSize)
66     SimParameters.try_emplace("-micro-op-queue-size", PO.MicroOpQueueSize);
67 
68   if (PO.DispatchWidth)
69     SimParameters.try_emplace("-dispatch", PO.DispatchWidth);
70 
71   if (PO.LoadQueueSize)
72     SimParameters.try_emplace("-lqueue", PO.LoadQueueSize);
73 
74   if (PO.StoreQueueSize)
75     SimParameters.try_emplace("-squeue", PO.StoreQueueSize);
76 
77   return SimParameters;
78 }
79 
80 json::Object PipelinePrinter::getJSONTargetInfo() const {
81   json::Array Resources;
82   const MCSchedModel &SM = STI.getSchedModel();
83   StringRef MCPU = STI.getCPU();
84 
85   for (unsigned I = 1, E = SM.getNumProcResourceKinds(); I < E; ++I) {
86     const MCProcResourceDesc &ProcResource = *SM.getProcResource(I);
87     unsigned NumUnits = ProcResource.NumUnits;
88     if (ProcResource.SubUnitsIdxBegin || !NumUnits)
89       continue;
90 
91     for (unsigned J = 0; J < NumUnits; ++J) {
92       std::string ResourceName = ProcResource.Name;
93       if (NumUnits > 1) {
94         ResourceName += ".";
95         ResourceName += J;
96       }
97 
98       Resources.push_back(ResourceName);
99     }
100   }
101 
102   return json::Object({{"CPUName", MCPU}, {"Resources", std::move(Resources)}});
103 }
104 
105 void PipelinePrinter::printReport(json::Object &JO) const {
106   if (!RegionIdx) {
107     JO.try_emplace("TargetInfo", getJSONTargetInfo());
108     JO.try_emplace("SimulationParameters", getJSONSimulationParameters());
109     // Construct an array of regions.
110     JO.try_emplace("CodeRegions", json::Array());
111   }
112 
113   json::Array *Regions = JO.getArray("CodeRegions");
114   assert(Regions && "This array must exist!");
115   Regions->push_back(getJSONReportRegion());
116 }
117 
118 void PipelinePrinter::printReport(llvm::raw_ostream &OS) const {
119   // Don't print the header of this region if it is the default region, and if
120   // it doesn't have an end location.
121   if (Region.startLoc().isValid() || Region.endLoc().isValid())
122     printRegionHeader(OS);
123 
124   for (const auto &V : Views)
125     V->printView(OS);
126 }
127 
128 } // namespace mca
129 } // namespace llvm
130