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-rw-r--r--tools/llvm-mca/llvm-mca.cpp113
1 files changed, 72 insertions, 41 deletions
diff --git a/tools/llvm-mca/llvm-mca.cpp b/tools/llvm-mca/llvm-mca.cpp
index b3590b5910ec..99c45eebdd88 100644
--- a/tools/llvm-mca/llvm-mca.cpp
+++ b/tools/llvm-mca/llvm-mca.cpp
@@ -32,11 +32,17 @@
#include "Views/SchedulerStatistics.h"
#include "Views/SummaryView.h"
#include "Views/TimelineView.h"
+#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCTargetOptionsCommandFlags.inc"
+#include "llvm/MCA/CodeEmitter.h"
#include "llvm/MCA/Context.h"
+#include "llvm/MCA/InstrBuilder.h"
#include "llvm/MCA/Pipeline.h"
#include "llvm/MCA/Stages/EntryStage.h"
#include "llvm/MCA/Stages/InstructionTables.h"
@@ -83,11 +89,20 @@ static cl::opt<std::string>
cl::desc("Target a specific cpu type (-mcpu=help for details)"),
cl::value_desc("cpu-name"), cl::cat(ToolOptions), cl::init("native"));
+static cl::opt<std::string>
+ MATTR("mattr",
+ cl::desc("Additional target features."),
+ cl::cat(ToolOptions));
+
static cl::opt<int>
OutputAsmVariant("output-asm-variant",
cl::desc("Syntax variant to use for output printing"),
cl::cat(ToolOptions), cl::init(-1));
+static cl::opt<bool>
+ PrintImmHex("print-imm-hex", cl::cat(ToolOptions), cl::init(false),
+ cl::desc("Prefer hex format when printing immediate values"));
+
static cl::opt<unsigned> Iterations("iterations",
cl::desc("Number of iterations to run"),
cl::cat(ToolOptions), cl::init(0));
@@ -193,6 +208,11 @@ static cl::opt<bool> EnableBottleneckAnalysis(
cl::desc("Enable bottleneck analysis (disabled by default)"),
cl::cat(ViewOptions), cl::init(false));
+static cl::opt<bool> ShowEncoding(
+ "show-encoding",
+ cl::desc("Print encoding information in the instruction info view"),
+ cl::cat(ViewOptions), cl::init(false));
+
namespace {
const Target *getTarget(const char *ProgName) {
@@ -218,7 +238,7 @@ ErrorOr<std::unique_ptr<ToolOutputFile>> getOutputStream() {
OutputFilename = "-";
std::error_code EC;
auto Out =
- llvm::make_unique<ToolOutputFile>(OutputFilename, EC, sys::fs::F_None);
+ std::make_unique<ToolOutputFile>(OutputFilename, EC, sys::fs::OF_Text);
if (!EC)
return std::move(Out);
return EC;
@@ -303,33 +323,11 @@ int main(int argc, char **argv) {
// Apply overrides to llvm-mca specific options.
processViewOptions();
- SourceMgr SrcMgr;
-
- // Tell SrcMgr about this buffer, which is what the parser will pick up.
- SrcMgr.AddNewSourceBuffer(std::move(*BufferPtr), SMLoc());
-
- std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
- assert(MRI && "Unable to create target register info!");
-
- std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
- assert(MAI && "Unable to create target asm info!");
-
- MCObjectFileInfo MOFI;
- MCContext Ctx(MAI.get(), MRI.get(), &MOFI, &SrcMgr);
- MOFI.InitMCObjectFileInfo(TheTriple, /* PIC= */ false, Ctx);
-
- std::unique_ptr<buffer_ostream> BOS;
-
- std::unique_ptr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo());
-
- std::unique_ptr<MCInstrAnalysis> MCIA(
- TheTarget->createMCInstrAnalysis(MCII.get()));
-
if (!MCPU.compare("native"))
MCPU = llvm::sys::getHostCPUName();
std::unique_ptr<MCSubtargetInfo> STI(
- TheTarget->createMCSubtargetInfo(TripleName, MCPU, /* FeaturesStr */ ""));
+ TheTarget->createMCSubtargetInfo(TripleName, MCPU, MATTR));
if (!STI->isCPUStringValid(MCPU))
return 1;
@@ -352,6 +350,29 @@ int main(int argc, char **argv) {
return 1;
}
+ std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
+ assert(MRI && "Unable to create target register info!");
+
+ std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
+ assert(MAI && "Unable to create target asm info!");
+
+ MCObjectFileInfo MOFI;
+ SourceMgr SrcMgr;
+
+ // Tell SrcMgr about this buffer, which is what the parser will pick up.
+ SrcMgr.AddNewSourceBuffer(std::move(*BufferPtr), SMLoc());
+
+ MCContext Ctx(MAI.get(), MRI.get(), &MOFI, &SrcMgr);
+
+ MOFI.InitMCObjectFileInfo(TheTriple, /* PIC= */ false, Ctx);
+
+ std::unique_ptr<buffer_ostream> BOS;
+
+ std::unique_ptr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo());
+
+ std::unique_ptr<MCInstrAnalysis> MCIA(
+ TheTarget->createMCInstrAnalysis(MCII.get()));
+
// Parse the input and create CodeRegions that llvm-mca can analyze.
mca::AsmCodeRegionGenerator CRG(*TheTarget, SrcMgr, Ctx, *MAI, *STI, *MCII);
Expected<const mca::CodeRegions &> RegionsOrErr = CRG.parseCodeRegions();
@@ -396,6 +417,9 @@ int main(int argc, char **argv) {
return 1;
}
+ // Set the display preference for hex vs. decimal immediates.
+ IP->setPrintImmHex(PrintImmHex);
+
std::unique_ptr<ToolOutputFile> TOF = std::move(*OF);
const MCSchedModel &SM = STI->getSchedModel();
@@ -413,6 +437,12 @@ int main(int argc, char **argv) {
// Number each region in the sequence.
unsigned RegionIdx = 0;
+ std::unique_ptr<MCCodeEmitter> MCE(
+ TheTarget->createMCCodeEmitter(*MCII, *MRI, Ctx));
+
+ std::unique_ptr<MCAsmBackend> MAB(TheTarget->createMCAsmBackend(
+ *STI, *MRI, InitMCTargetOptionsFromFlags()));
+
for (const std::unique_ptr<mca::CodeRegion> &Region : Regions) {
// Skip empty code regions.
if (Region->empty())
@@ -430,6 +460,7 @@ int main(int argc, char **argv) {
// Lower the MCInst sequence into an mca::Instruction sequence.
ArrayRef<MCInst> Insts = Region->getInstructions();
+ mca::CodeEmitter CE(*STI, *MAB, *MCE, Insts);
std::vector<std::unique_ptr<mca::Instruction>> LoweredSequence;
for (const MCInst &MCI : Insts) {
Expected<std::unique_ptr<mca::Instruction>> Inst =
@@ -459,18 +490,18 @@ int main(int argc, char **argv) {
if (PrintInstructionTables) {
// Create a pipeline, stages, and a printer.
- auto P = llvm::make_unique<mca::Pipeline>();
- P->appendStage(llvm::make_unique<mca::EntryStage>(S));
- P->appendStage(llvm::make_unique<mca::InstructionTables>(SM));
+ auto P = std::make_unique<mca::Pipeline>();
+ P->appendStage(std::make_unique<mca::EntryStage>(S));
+ P->appendStage(std::make_unique<mca::InstructionTables>(SM));
mca::PipelinePrinter Printer(*P);
// Create the views for this pipeline, execute, and emit a report.
if (PrintInstructionInfoView) {
- Printer.addView(llvm::make_unique<mca::InstructionInfoView>(
- *STI, *MCII, Insts, *IP));
+ Printer.addView(std::make_unique<mca::InstructionInfoView>(
+ *STI, *MCII, CE, ShowEncoding, Insts, *IP));
}
Printer.addView(
- llvm::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
+ std::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
if (!runPipeline(*P))
return 1;
@@ -480,42 +511,42 @@ int main(int argc, char **argv) {
}
// Create a basic pipeline simulating an out-of-order backend.
- auto P = MCA.createDefaultPipeline(PO, IB, S);
+ auto P = MCA.createDefaultPipeline(PO, S);
mca::PipelinePrinter Printer(*P);
if (PrintSummaryView)
Printer.addView(
- llvm::make_unique<mca::SummaryView>(SM, Insts, DispatchWidth));
+ std::make_unique<mca::SummaryView>(SM, Insts, DispatchWidth));
if (EnableBottleneckAnalysis) {
- Printer.addView(llvm::make_unique<mca::BottleneckAnalysis>(
+ Printer.addView(std::make_unique<mca::BottleneckAnalysis>(
*STI, *IP, Insts, S.getNumIterations()));
}
if (PrintInstructionInfoView)
- Printer.addView(
- llvm::make_unique<mca::InstructionInfoView>(*STI, *MCII, Insts, *IP));
+ Printer.addView(std::make_unique<mca::InstructionInfoView>(
+ *STI, *MCII, CE, ShowEncoding, Insts, *IP));
if (PrintDispatchStats)
- Printer.addView(llvm::make_unique<mca::DispatchStatistics>());
+ Printer.addView(std::make_unique<mca::DispatchStatistics>());
if (PrintSchedulerStats)
- Printer.addView(llvm::make_unique<mca::SchedulerStatistics>(*STI));
+ Printer.addView(std::make_unique<mca::SchedulerStatistics>(*STI));
if (PrintRetireStats)
- Printer.addView(llvm::make_unique<mca::RetireControlUnitStatistics>(SM));
+ Printer.addView(std::make_unique<mca::RetireControlUnitStatistics>(SM));
if (PrintRegisterFileStats)
- Printer.addView(llvm::make_unique<mca::RegisterFileStatistics>(*STI));
+ Printer.addView(std::make_unique<mca::RegisterFileStatistics>(*STI));
if (PrintResourcePressureView)
Printer.addView(
- llvm::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
+ std::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
if (PrintTimelineView) {
unsigned TimelineIterations =
TimelineMaxIterations ? TimelineMaxIterations : 10;
- Printer.addView(llvm::make_unique<mca::TimelineView>(
+ Printer.addView(std::make_unique<mca::TimelineView>(
*STI, *IP, Insts, std::min(TimelineIterations, S.getNumIterations()),
TimelineMaxCycles));
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 10:31:50 +0000