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DeltaManager.cpp
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DeltaManager.cpp
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//===- DeltaManager.cpp - Runs Delta Passes to reduce Input ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file calls each specialized Delta pass in order to reduce the input IR
// file.
//
//===----------------------------------------------------------------------===//
#include "DeltaManager.h"
#include "ReducerWorkItem.h"
#include "TestRunner.h"
#include "deltas/Delta.h"
#include "deltas/ReduceAliases.h"
#include "deltas/ReduceArguments.h"
#include "deltas/ReduceAttributes.h"
#include "deltas/ReduceBasicBlocks.h"
#include "deltas/ReduceDIMetadata.h"
#include "deltas/ReduceFunctionBodies.h"
#include "deltas/ReduceFunctions.h"
#include "deltas/ReduceGlobalObjects.h"
#include "deltas/ReduceGlobalValues.h"
#include "deltas/ReduceGlobalVarInitializers.h"
#include "deltas/ReduceGlobalVars.h"
#include "deltas/ReduceIRReferences.h"
#include "deltas/ReduceInstructionFlags.h"
#include "deltas/ReduceInstructionFlagsMIR.h"
#include "deltas/ReduceInstructions.h"
#include "deltas/ReduceInstructionsMIR.h"
#include "deltas/ReduceInvokes.h"
#include "deltas/ReduceMemoryOperations.h"
#include "deltas/ReduceMetadata.h"
#include "deltas/ReduceModuleData.h"
#include "deltas/ReduceOpcodes.h"
#include "deltas/ReduceOperandBundles.h"
#include "deltas/ReduceOperands.h"
#include "deltas/ReduceOperandsSkip.h"
#include "deltas/ReduceOperandsToArgs.h"
#include "deltas/ReduceRegisterDefs.h"
#include "deltas/ReduceRegisterMasks.h"
#include "deltas/ReduceRegisterUses.h"
#include "deltas/ReduceSpecialGlobals.h"
#include "deltas/ReduceUsingSimplifyCFG.h"
#include "deltas/ReduceVirtualRegisters.h"
#include "deltas/RunIRPasses.h"
#include "deltas/SimplifyInstructions.h"
#include "deltas/StripDebugInfo.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
using SmallStringSet = SmallSet<StringRef, 8>;
extern cl::OptionCategory LLVMReduceOptions;
static cl::list<std::string>
DeltaPasses("delta-passes",
cl::desc("Delta passes to run, separated by commas. By "
"default, run all delta passes."),
cl::cat(LLVMReduceOptions), cl::CommaSeparated);
static cl::list<std::string>
SkipDeltaPasses("skip-delta-passes",
cl::desc("Delta passes to not run, separated by commas. By "
"default, run all delta passes."),
cl::cat(LLVMReduceOptions), cl::CommaSeparated);
#define DELTA_PASSES \
do { \
DELTA_PASS("strip-debug-info", stripDebugInfoDeltaPass) \
DELTA_PASS("functions", reduceFunctionsDeltaPass) \
DELTA_PASS("function-bodies", reduceFunctionBodiesDeltaPass) \
DELTA_PASS("special-globals", reduceSpecialGlobalsDeltaPass) \
DELTA_PASS("aliases", reduceAliasesDeltaPass) \
DELTA_PASS("ifuncs", reduceIFuncsDeltaPass) \
DELTA_PASS("simplify-conditionals-true", reduceConditionalsTrueDeltaPass) \
DELTA_PASS("simplify-conditionals-false", reduceConditionalsFalseDeltaPass)\
DELTA_PASS("invokes", reduceInvokesDeltaPass) \
DELTA_PASS("unreachable-basic-blocks", reduceUnreachableBasicBlocksDeltaPass) \
DELTA_PASS("basic-blocks", reduceBasicBlocksDeltaPass) \
DELTA_PASS("simplify-cfg", reduceUsingSimplifyCFGDeltaPass) \
DELTA_PASS("function-data", reduceFunctionDataDeltaPass) \
DELTA_PASS("global-values", reduceGlobalValuesDeltaPass) \
DELTA_PASS("global-objects", reduceGlobalObjectsDeltaPass) \
DELTA_PASS("global-initializers", reduceGlobalsInitializersDeltaPass) \
DELTA_PASS("global-variables", reduceGlobalsDeltaPass) \
DELTA_PASS("di-metadata", reduceDIMetadataDeltaPass) \
DELTA_PASS("metadata", reduceMetadataDeltaPass) \
DELTA_PASS("named-metadata", reduceNamedMetadataDeltaPass) \
DELTA_PASS("arguments", reduceArgumentsDeltaPass) \
DELTA_PASS("instructions", reduceInstructionsDeltaPass) \
DELTA_PASS("simplify-instructions", simplifyInstructionsDeltaPass) \
DELTA_PASS("ir-passes", runIRPassesDeltaPass) \
DELTA_PASS("operands-zero", reduceOperandsZeroDeltaPass) \
DELTA_PASS("operands-one", reduceOperandsOneDeltaPass) \
DELTA_PASS("operands-nan", reduceOperandsNaNDeltaPass) \
DELTA_PASS("operands-to-args", reduceOperandsToArgsDeltaPass) \
DELTA_PASS("operands-skip", reduceOperandsSkipDeltaPass) \
DELTA_PASS("operand-bundles", reduceOperandBundesDeltaPass) \
DELTA_PASS("attributes", reduceAttributesDeltaPass) \
DELTA_PASS("module-data", reduceModuleDataDeltaPass) \
DELTA_PASS("opcodes", reduceOpcodesDeltaPass) \
DELTA_PASS("volatile", reduceVolatileInstructionsDeltaPass) \
DELTA_PASS("atomic-ordering", reduceAtomicOrderingDeltaPass) \
DELTA_PASS("syncscopes", reduceAtomicSyncScopesDeltaPass) \
DELTA_PASS("instruction-flags", reduceInstructionFlagsDeltaPass) \
} while (false)
#define DELTA_PASSES_MIR \
do { \
DELTA_PASS("instructions", reduceInstructionsMIRDeltaPass) \
DELTA_PASS("ir-instruction-references", \
reduceIRInstructionReferencesDeltaPass) \
DELTA_PASS("ir-block-references", reduceIRBlockReferencesDeltaPass) \
DELTA_PASS("ir-function-references", reduceIRFunctionReferencesDeltaPass) \
DELTA_PASS("instruction-flags", reduceInstructionFlagsMIRDeltaPass) \
DELTA_PASS("register-uses", reduceRegisterUsesMIRDeltaPass) \
DELTA_PASS("register-defs", reduceRegisterDefsMIRDeltaPass) \
DELTA_PASS("register-hints", reduceVirtualRegisterHintsDeltaPass) \
DELTA_PASS("register-masks", reduceRegisterMasksMIRDeltaPass) \
} while (false)
static void runAllDeltaPasses(TestRunner &Tester,
const SmallStringSet &SkipPass) {
#define DELTA_PASS(NAME, FUNC) \
if (!SkipPass.count(NAME)) { \
FUNC(Tester); \
}
if (Tester.getProgram().isMIR()) {
DELTA_PASSES_MIR;
} else {
DELTA_PASSES;
}
#undef DELTA_PASS
}
static void runDeltaPassName(TestRunner &Tester, StringRef PassName) {
#define DELTA_PASS(NAME, FUNC) \
if (PassName == NAME) { \
FUNC(Tester); \
return; \
}
if (Tester.getProgram().isMIR()) {
DELTA_PASSES_MIR;
} else {
DELTA_PASSES;
}
#undef DELTA_PASS
// We should have errored on unrecognized passes before trying to run
// anything.
llvm_unreachable("unknown delta pass");
}
void llvm::printDeltaPasses(raw_ostream &OS) {
OS << "Delta passes (pass to `--delta-passes=` as a comma separated list):\n";
#define DELTA_PASS(NAME, FUNC) OS << " " << NAME << "\n";
OS << " IR:\n";
DELTA_PASSES;
OS << " MIR:\n";
DELTA_PASSES_MIR;
#undef DELTA_PASS
}
// Built a set of available delta passes.
static void collectPassNames(const TestRunner &Tester,
SmallStringSet &NameSet) {
#define DELTA_PASS(NAME, FUNC) NameSet.insert(NAME);
if (Tester.getProgram().isMIR()) {
DELTA_PASSES_MIR;
} else {
DELTA_PASSES;
}
#undef DELTA_PASS
}
/// Verify all requested or skipped passes are valid names, and return them in a
/// set.
static SmallStringSet handlePassList(const TestRunner &Tester,
const cl::list<std::string> &PassList) {
SmallStringSet AllPasses;
collectPassNames(Tester, AllPasses);
SmallStringSet PassSet;
for (StringRef PassName : PassList) {
if (!AllPasses.count(PassName)) {
errs() << "unknown pass \"" << PassName << "\"\n";
exit(1);
}
PassSet.insert(PassName);
}
return PassSet;
}
void llvm::runDeltaPasses(TestRunner &Tester, int MaxPassIterations) {
uint64_t OldComplexity = Tester.getProgram().getComplexityScore();
SmallStringSet RunPassSet, SkipPassSet;
if (!DeltaPasses.empty())
RunPassSet = handlePassList(Tester, DeltaPasses);
if (!SkipDeltaPasses.empty())
SkipPassSet = handlePassList(Tester, SkipDeltaPasses);
for (int Iter = 0; Iter < MaxPassIterations; ++Iter) {
if (DeltaPasses.empty()) {
runAllDeltaPasses(Tester, SkipPassSet);
} else {
for (StringRef PassName : DeltaPasses) {
if (!SkipPassSet.count(PassName))
runDeltaPassName(Tester, PassName);
}
}
uint64_t NewComplexity = Tester.getProgram().getComplexityScore();
if (NewComplexity >= OldComplexity)
break;
OldComplexity = NewComplexity;
}
}