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410cbf9d39
This patch adds a -time-regions option to tablegen that can enable timers (currently only one) that assess the performance of tablegen itself. This can be useful for identifying scaling problems with tablegen backends. This particular timer has allowed me to ignore time that is not attributed the GISel combiner pass. It's useful by itself but it is particularly useful in combination with https://reviews.llvm.org/D52954 which causes this period of time to be annotated within Xcode Instruments which in turn allows profile samples and recorded allocations attributed to reading instructions to be filtered out. llvm-svn: 353763
274 lines
9.4 KiB
C++
274 lines
9.4 KiB
C++
//===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===//
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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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//
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// This file contains the main function for LLVM's TableGen.
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//
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//===----------------------------------------------------------------------===//
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#include "TableGenBackends.h" // Declares all backends.
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/TableGen/Main.h"
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#include "llvm/TableGen/Record.h"
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#include "llvm/TableGen/SetTheory.h"
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using namespace llvm;
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enum ActionType {
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PrintRecords,
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DumpJSON,
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GenEmitter,
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GenRegisterInfo,
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GenInstrInfo,
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GenInstrDocs,
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GenAsmWriter,
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GenAsmMatcher,
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GenDisassembler,
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GenPseudoLowering,
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GenCompressInst,
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GenCallingConv,
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GenDAGISel,
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GenDFAPacketizer,
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GenFastISel,
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GenSubtarget,
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GenIntrinsicEnums,
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GenIntrinsicImpl,
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GenTgtIntrinsicEnums,
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GenTgtIntrinsicImpl,
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PrintEnums,
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PrintSets,
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GenOptParserDefs,
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GenCTags,
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GenAttributes,
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GenSearchableTables,
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GenGlobalISel,
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GenX86EVEX2VEXTables,
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GenX86FoldTables,
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GenRegisterBank,
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GenExegesis,
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};
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namespace llvm {
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/// Storage for TimeRegionsOpt as a global so that backends aren't required to
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/// include CommandLine.h
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bool TimeRegions = false;
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} // end namespace llvm
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namespace {
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cl::opt<ActionType>
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Action(cl::desc("Action to perform:"),
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cl::values(clEnumValN(PrintRecords, "print-records",
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"Print all records to stdout (default)"),
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clEnumValN(DumpJSON, "dump-json",
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"Dump all records as machine-readable JSON"),
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clEnumValN(GenEmitter, "gen-emitter",
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"Generate machine code emitter"),
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clEnumValN(GenRegisterInfo, "gen-register-info",
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"Generate registers and register classes info"),
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clEnumValN(GenInstrInfo, "gen-instr-info",
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"Generate instruction descriptions"),
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clEnumValN(GenInstrDocs, "gen-instr-docs",
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"Generate instruction documentation"),
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clEnumValN(GenCallingConv, "gen-callingconv",
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"Generate calling convention descriptions"),
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clEnumValN(GenAsmWriter, "gen-asm-writer",
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"Generate assembly writer"),
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clEnumValN(GenDisassembler, "gen-disassembler",
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"Generate disassembler"),
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clEnumValN(GenPseudoLowering, "gen-pseudo-lowering",
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"Generate pseudo instruction lowering"),
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clEnumValN(GenCompressInst, "gen-compress-inst-emitter",
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"Generate RISCV compressed instructions."),
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clEnumValN(GenAsmMatcher, "gen-asm-matcher",
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"Generate assembly instruction matcher"),
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clEnumValN(GenDAGISel, "gen-dag-isel",
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"Generate a DAG instruction selector"),
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clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer",
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"Generate DFA Packetizer for VLIW targets"),
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clEnumValN(GenFastISel, "gen-fast-isel",
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"Generate a \"fast\" instruction selector"),
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clEnumValN(GenSubtarget, "gen-subtarget",
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"Generate subtarget enumerations"),
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clEnumValN(GenIntrinsicEnums, "gen-intrinsic-enums",
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"Generate intrinsic enums"),
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clEnumValN(GenIntrinsicImpl, "gen-intrinsic-impl",
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"Generate intrinsic information"),
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clEnumValN(GenTgtIntrinsicEnums, "gen-tgt-intrinsic-enums",
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"Generate target intrinsic enums"),
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clEnumValN(GenTgtIntrinsicImpl, "gen-tgt-intrinsic-impl",
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"Generate target intrinsic information"),
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clEnumValN(PrintEnums, "print-enums",
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"Print enum values for a class"),
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clEnumValN(PrintSets, "print-sets",
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"Print expanded sets for testing DAG exprs"),
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clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
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"Generate option definitions"),
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clEnumValN(GenCTags, "gen-ctags",
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"Generate ctags-compatible index"),
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clEnumValN(GenAttributes, "gen-attrs",
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"Generate attributes"),
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clEnumValN(GenSearchableTables, "gen-searchable-tables",
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"Generate generic binary-searchable table"),
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clEnumValN(GenGlobalISel, "gen-global-isel",
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"Generate GlobalISel selector"),
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clEnumValN(GenX86EVEX2VEXTables, "gen-x86-EVEX2VEX-tables",
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"Generate X86 EVEX to VEX compress tables"),
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clEnumValN(GenX86FoldTables, "gen-x86-fold-tables",
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"Generate X86 fold tables"),
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clEnumValN(GenRegisterBank, "gen-register-bank",
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"Generate registers bank descriptions"),
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clEnumValN(GenExegesis, "gen-exegesis",
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"Generate llvm-exegesis tables")));
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cl::OptionCategory PrintEnumsCat("Options for -print-enums");
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cl::opt<std::string>
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Class("class", cl::desc("Print Enum list for this class"),
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cl::value_desc("class name"), cl::cat(PrintEnumsCat));
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cl::opt<bool, true>
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TimeRegionsOpt("time-regions",
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cl::desc("Time regions of tablegens execution"),
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cl::location(TimeRegions));
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bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
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switch (Action) {
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case PrintRecords:
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OS << Records; // No argument, dump all contents
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break;
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case DumpJSON:
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EmitJSON(Records, OS);
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break;
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case GenEmitter:
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EmitCodeEmitter(Records, OS);
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break;
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case GenRegisterInfo:
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EmitRegisterInfo(Records, OS);
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break;
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case GenInstrInfo:
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EmitInstrInfo(Records, OS);
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break;
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case GenInstrDocs:
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EmitInstrDocs(Records, OS);
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break;
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case GenCallingConv:
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EmitCallingConv(Records, OS);
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break;
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case GenAsmWriter:
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EmitAsmWriter(Records, OS);
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break;
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case GenAsmMatcher:
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EmitAsmMatcher(Records, OS);
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break;
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case GenDisassembler:
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EmitDisassembler(Records, OS);
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break;
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case GenPseudoLowering:
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EmitPseudoLowering(Records, OS);
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break;
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case GenCompressInst:
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EmitCompressInst(Records, OS);
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break;
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case GenDAGISel:
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EmitDAGISel(Records, OS);
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break;
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case GenDFAPacketizer:
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EmitDFAPacketizer(Records, OS);
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break;
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case GenFastISel:
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EmitFastISel(Records, OS);
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break;
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case GenSubtarget:
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EmitSubtarget(Records, OS);
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break;
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case GenIntrinsicEnums:
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EmitIntrinsicEnums(Records, OS);
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break;
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case GenIntrinsicImpl:
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EmitIntrinsicImpl(Records, OS);
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break;
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case GenTgtIntrinsicEnums:
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EmitIntrinsicEnums(Records, OS, true);
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break;
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case GenTgtIntrinsicImpl:
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EmitIntrinsicImpl(Records, OS, true);
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break;
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case GenOptParserDefs:
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EmitOptParser(Records, OS);
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break;
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case PrintEnums:
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{
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for (Record *Rec : Records.getAllDerivedDefinitions(Class))
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OS << Rec->getName() << ", ";
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OS << "\n";
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break;
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}
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case PrintSets:
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{
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SetTheory Sets;
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Sets.addFieldExpander("Set", "Elements");
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for (Record *Rec : Records.getAllDerivedDefinitions("Set")) {
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OS << Rec->getName() << " = [";
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const std::vector<Record*> *Elts = Sets.expand(Rec);
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assert(Elts && "Couldn't expand Set instance");
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for (Record *Elt : *Elts)
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OS << ' ' << Elt->getName();
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OS << " ]\n";
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}
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break;
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}
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case GenCTags:
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EmitCTags(Records, OS);
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break;
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case GenAttributes:
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EmitAttributes(Records, OS);
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break;
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case GenSearchableTables:
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EmitSearchableTables(Records, OS);
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break;
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case GenGlobalISel:
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EmitGlobalISel(Records, OS);
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break;
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case GenRegisterBank:
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EmitRegisterBank(Records, OS);
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break;
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case GenX86EVEX2VEXTables:
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EmitX86EVEX2VEXTables(Records, OS);
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break;
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case GenX86FoldTables:
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EmitX86FoldTables(Records, OS);
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break;
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case GenExegesis:
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EmitExegesis(Records, OS);
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break;
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}
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return false;
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}
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}
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int main(int argc, char **argv) {
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sys::PrintStackTraceOnErrorSignal(argv[0]);
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PrettyStackTraceProgram X(argc, argv);
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cl::ParseCommandLineOptions(argc, argv);
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llvm_shutdown_obj Y;
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return TableGenMain(argv[0], &LLVMTableGenMain);
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}
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#ifdef __has_feature
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#if __has_feature(address_sanitizer)
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#include <sanitizer/lsan_interface.h>
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// Disable LeakSanitizer for this binary as it has too many leaks that are not
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// very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h .
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LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; }
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#endif // __has_feature(address_sanitizer)
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#endif // defined(__has_feature)
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