a455c91601
Main thing I was unsure about was to whether try to delete the now dead landing blocks, or leave that for the unreachable block reduction. Personality function is not reduced, but that should be a separate reduction on the function. Fixes #58815
226 lines
9.6 KiB
C++
226 lines
9.6 KiB
C++
//===- DeltaManager.cpp - Runs Delta Passes to reduce Input ---------------===//
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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 calls each specialized Delta pass in order to reduce the input IR
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// file.
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//
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//===----------------------------------------------------------------------===//
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#include "DeltaManager.h"
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#include "ReducerWorkItem.h"
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#include "TestRunner.h"
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#include "deltas/Delta.h"
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#include "deltas/ReduceAliases.h"
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#include "deltas/ReduceArguments.h"
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#include "deltas/ReduceAttributes.h"
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#include "deltas/ReduceBasicBlocks.h"
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#include "deltas/ReduceDIMetadata.h"
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#include "deltas/ReduceFunctionBodies.h"
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#include "deltas/ReduceFunctions.h"
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#include "deltas/ReduceGlobalObjects.h"
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#include "deltas/ReduceGlobalValues.h"
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#include "deltas/ReduceGlobalVarInitializers.h"
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#include "deltas/ReduceGlobalVars.h"
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#include "deltas/ReduceIRReferences.h"
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#include "deltas/ReduceInstructionFlags.h"
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#include "deltas/ReduceInstructionFlagsMIR.h"
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#include "deltas/ReduceInstructions.h"
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#include "deltas/ReduceInstructionsMIR.h"
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#include "deltas/ReduceInvokes.h"
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#include "deltas/ReduceMemoryOperations.h"
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#include "deltas/ReduceMetadata.h"
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#include "deltas/ReduceModuleData.h"
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#include "deltas/ReduceOpcodes.h"
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#include "deltas/ReduceOperandBundles.h"
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#include "deltas/ReduceOperands.h"
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#include "deltas/ReduceOperandsSkip.h"
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#include "deltas/ReduceOperandsToArgs.h"
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#include "deltas/ReduceRegisterDefs.h"
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#include "deltas/ReduceRegisterMasks.h"
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#include "deltas/ReduceRegisterUses.h"
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#include "deltas/ReduceSpecialGlobals.h"
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#include "deltas/ReduceUsingSimplifyCFG.h"
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#include "deltas/ReduceVirtualRegisters.h"
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#include "deltas/RunIRPasses.h"
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#include "deltas/SimplifyInstructions.h"
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#include "deltas/StripDebugInfo.h"
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#include "llvm/Support/CommandLine.h"
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using namespace llvm;
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using SmallStringSet = SmallSet<StringRef, 8>;
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extern cl::OptionCategory LLVMReduceOptions;
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static cl::list<std::string>
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DeltaPasses("delta-passes",
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cl::desc("Delta passes to run, separated by commas. By "
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"default, run all delta passes."),
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cl::cat(LLVMReduceOptions), cl::CommaSeparated);
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static cl::list<std::string>
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SkipDeltaPasses("skip-delta-passes",
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cl::desc("Delta passes to not run, separated by commas. By "
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"default, run all delta passes."),
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cl::cat(LLVMReduceOptions), cl::CommaSeparated);
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#define DELTA_PASSES \
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do { \
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DELTA_PASS("strip-debug-info", stripDebugInfoDeltaPass) \
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DELTA_PASS("functions", reduceFunctionsDeltaPass) \
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DELTA_PASS("function-bodies", reduceFunctionBodiesDeltaPass) \
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DELTA_PASS("special-globals", reduceSpecialGlobalsDeltaPass) \
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DELTA_PASS("aliases", reduceAliasesDeltaPass) \
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DELTA_PASS("simplify-conditionals-true", reduceConditionalsTrueDeltaPass) \
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DELTA_PASS("simplify-conditionals-false", reduceConditionalsFalseDeltaPass)\
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DELTA_PASS("invokes", reduceInvokesDeltaPass) \
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DELTA_PASS("unreachable-basic-blocks", reduceUnreachableBasicBlocksDeltaPass) \
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DELTA_PASS("basic-blocks", reduceBasicBlocksDeltaPass) \
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DELTA_PASS("simplify-cfg", reduceUsingSimplifyCFGDeltaPass) \
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DELTA_PASS("function-data", reduceFunctionDataDeltaPass) \
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DELTA_PASS("global-values", reduceGlobalValuesDeltaPass) \
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DELTA_PASS("global-objects", reduceGlobalObjectsDeltaPass) \
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DELTA_PASS("global-initializers", reduceGlobalsInitializersDeltaPass) \
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DELTA_PASS("global-variables", reduceGlobalsDeltaPass) \
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DELTA_PASS("di-metadata", reduceDIMetadataDeltaPass) \
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DELTA_PASS("metadata", reduceMetadataDeltaPass) \
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DELTA_PASS("named-metadata", reduceNamedMetadataDeltaPass) \
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DELTA_PASS("arguments", reduceArgumentsDeltaPass) \
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DELTA_PASS("instructions", reduceInstructionsDeltaPass) \
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DELTA_PASS("simplify-instructions", simplifyInstructionsDeltaPass) \
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DELTA_PASS("ir-passes", runIRPassesDeltaPass) \
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DELTA_PASS("operands-zero", reduceOperandsZeroDeltaPass) \
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DELTA_PASS("operands-one", reduceOperandsOneDeltaPass) \
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DELTA_PASS("operands-nan", reduceOperandsNaNDeltaPass) \
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DELTA_PASS("operands-to-args", reduceOperandsToArgsDeltaPass) \
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DELTA_PASS("operands-skip", reduceOperandsSkipDeltaPass) \
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DELTA_PASS("operand-bundles", reduceOperandBundesDeltaPass) \
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DELTA_PASS("attributes", reduceAttributesDeltaPass) \
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DELTA_PASS("module-data", reduceModuleDataDeltaPass) \
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DELTA_PASS("opcodes", reduceOpcodesDeltaPass) \
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DELTA_PASS("volatile", reduceVolatileInstructionsDeltaPass) \
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DELTA_PASS("atomic-ordering", reduceAtomicOrderingDeltaPass) \
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DELTA_PASS("syncscopes", reduceAtomicSyncScopesDeltaPass) \
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DELTA_PASS("instruction-flags", reduceInstructionFlagsDeltaPass) \
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} while (false)
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#define DELTA_PASSES_MIR \
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do { \
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DELTA_PASS("instructions", reduceInstructionsMIRDeltaPass) \
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DELTA_PASS("ir-instruction-references", \
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reduceIRInstructionReferencesDeltaPass) \
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DELTA_PASS("ir-block-references", reduceIRBlockReferencesDeltaPass) \
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DELTA_PASS("ir-function-references", reduceIRFunctionReferencesDeltaPass) \
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DELTA_PASS("instruction-flags", reduceInstructionFlagsMIRDeltaPass) \
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DELTA_PASS("register-uses", reduceRegisterUsesMIRDeltaPass) \
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DELTA_PASS("register-defs", reduceRegisterDefsMIRDeltaPass) \
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DELTA_PASS("register-hints", reduceVirtualRegisterHintsDeltaPass) \
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DELTA_PASS("register-masks", reduceRegisterMasksMIRDeltaPass) \
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} while (false)
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static void runAllDeltaPasses(TestRunner &Tester,
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const SmallStringSet &SkipPass) {
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#define DELTA_PASS(NAME, FUNC) \
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if (!SkipPass.count(NAME)) { \
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FUNC(Tester); \
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}
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if (Tester.getProgram().isMIR()) {
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DELTA_PASSES_MIR;
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} else {
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DELTA_PASSES;
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}
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#undef DELTA_PASS
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}
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static void runDeltaPassName(TestRunner &Tester, StringRef PassName) {
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#define DELTA_PASS(NAME, FUNC) \
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if (PassName == NAME) { \
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FUNC(Tester); \
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return; \
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}
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if (Tester.getProgram().isMIR()) {
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DELTA_PASSES_MIR;
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} else {
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DELTA_PASSES;
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}
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#undef DELTA_PASS
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// We should have errored on unrecognized passes before trying to run
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// anything.
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llvm_unreachable("unknown delta pass");
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}
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void llvm::printDeltaPasses(raw_ostream &OS) {
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OS << "Delta passes (pass to `--delta-passes=` as a comma separated list):\n";
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#define DELTA_PASS(NAME, FUNC) OS << " " << NAME << "\n";
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OS << " IR:\n";
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DELTA_PASSES;
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OS << " MIR:\n";
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DELTA_PASSES_MIR;
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#undef DELTA_PASS
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}
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// Built a set of available delta passes.
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static void collectPassNames(const TestRunner &Tester,
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SmallStringSet &NameSet) {
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#define DELTA_PASS(NAME, FUNC) NameSet.insert(NAME);
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if (Tester.getProgram().isMIR()) {
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DELTA_PASSES_MIR;
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} else {
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DELTA_PASSES;
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}
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#undef DELTA_PASS
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}
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/// Verify all requested or skipped passes are valid names, and return them in a
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/// set.
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static SmallStringSet handlePassList(const TestRunner &Tester,
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const cl::list<std::string> &PassList) {
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SmallStringSet AllPasses;
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collectPassNames(Tester, AllPasses);
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SmallStringSet PassSet;
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for (StringRef PassName : PassList) {
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if (!AllPasses.count(PassName)) {
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errs() << "unknown pass \"" << PassName << "\"\n";
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exit(1);
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}
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PassSet.insert(PassName);
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}
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return PassSet;
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}
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void llvm::runDeltaPasses(TestRunner &Tester, int MaxPassIterations) {
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uint64_t OldComplexity = Tester.getProgram().getComplexityScore();
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SmallStringSet RunPassSet, SkipPassSet;
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if (!DeltaPasses.empty())
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RunPassSet = handlePassList(Tester, DeltaPasses);
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if (!SkipDeltaPasses.empty())
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SkipPassSet = handlePassList(Tester, SkipDeltaPasses);
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for (int Iter = 0; Iter < MaxPassIterations; ++Iter) {
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if (DeltaPasses.empty()) {
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runAllDeltaPasses(Tester, SkipPassSet);
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} else {
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for (StringRef PassName : DeltaPasses) {
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if (!SkipPassSet.count(PassName))
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runDeltaPassName(Tester, PassName);
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}
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}
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uint64_t NewComplexity = Tester.getProgram().getComplexityScore();
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if (NewComplexity >= OldComplexity)
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break;
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OldComplexity = NewComplexity;
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}
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}
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