mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
8828d8e6bf
Add more relevant instructions to dump in MemBehaviorDumper. Therefore the -enable-mem-behavior-dump-all option can be removed. Also mem-behavior-all.sil into mem-behavior.sil, because the sil-opt command lines don't differ anymore.
122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
//===--- MemBehaviorDumper.cpp --------------------------------------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See https://swift.org/LICENSE.txt for license information
|
|
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "sil-mem-behavior-dumper"
|
|
#include "swift/SIL/SILArgument.h"
|
|
#include "swift/SIL/SILFunction.h"
|
|
#include "swift/SIL/SILValue.h"
|
|
#include "swift/SILOptimizer/Analysis/AliasAnalysis.h"
|
|
#include "swift/SILOptimizer/Analysis/Analysis.h"
|
|
#include "swift/SILOptimizer/Analysis/SideEffectAnalysis.h"
|
|
#include "swift/SILOptimizer/PassManager/Passes.h"
|
|
#include "swift/SILOptimizer/PassManager/Transforms.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/Debug.h"
|
|
|
|
using namespace swift;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Value Gatherer
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Return a list of all instruction values in Fn. Returns true if we have at
|
|
// least two values to compare.
|
|
static bool gatherValues(SILFunction &Fn, std::vector<SILValue> &Values) {
|
|
for (auto &BB : Fn) {
|
|
for (auto *Arg : BB.getArguments())
|
|
Values.push_back(SILValue(Arg));
|
|
for (auto &II : BB) {
|
|
for (auto result : II.getResults())
|
|
Values.push_back(result);
|
|
}
|
|
}
|
|
return Values.size() > 1;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Top Level Driver
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace {
|
|
|
|
/// Dumps the memory behavior of instructions in a function.
|
|
class MemBehaviorDumper : public SILModuleTransform {
|
|
|
|
// To reduce the amount of output, we only dump the memory behavior of
|
|
// selected types of instructions.
|
|
static bool shouldTestInstruction(SILInstruction *I) {
|
|
switch (I->getKind()) {
|
|
case SILInstructionKind::ApplyInst:
|
|
case SILInstructionKind::TryApplyInst:
|
|
case SILInstructionKind::EndApplyInst:
|
|
case SILInstructionKind::BeginApplyInst:
|
|
case SILInstructionKind::AbortApplyInst:
|
|
case SILInstructionKind::BeginAccessInst:
|
|
case SILInstructionKind::EndAccessInst:
|
|
case SILInstructionKind::EndCOWMutationInst:
|
|
case SILInstructionKind::CopyValueInst:
|
|
case SILInstructionKind::DestroyValueInst:
|
|
case SILInstructionKind::EndBorrowInst:
|
|
case SILInstructionKind::LoadInst:
|
|
case SILInstructionKind::StoreInst:
|
|
case SILInstructionKind::CopyAddrInst:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void run() override {
|
|
for (auto &Fn : *getModule()) {
|
|
llvm::outs() << "@" << Fn.getName() << "\n";
|
|
// Gather up all Values in Fn.
|
|
std::vector<SILValue> Values;
|
|
if (!gatherValues(Fn, Values))
|
|
continue;
|
|
|
|
AliasAnalysis *AA = PM->getAnalysis<AliasAnalysis>();
|
|
|
|
unsigned PairCount = 0;
|
|
for (auto &BB : Fn) {
|
|
for (auto &I : BB) {
|
|
if (shouldTestInstruction(&I)) {
|
|
|
|
// Print the memory behavior in relation to all other values in the
|
|
// function.
|
|
for (auto &V : Values) {
|
|
if (V->getDefiningInstruction() == &I)
|
|
continue;
|
|
|
|
if (!V->getType().isAddress() && !isa<AddressToPointerInst>(V))
|
|
continue;
|
|
|
|
bool Read = AA->mayReadFromMemory(&I, V);
|
|
bool Write = AA->mayWriteToMemory(&I, V);
|
|
llvm::outs() << "PAIR #" << PairCount++ << ".\n"
|
|
<< " " << I << " " << V
|
|
<< " r=" << Read << ",w=" << Write << "\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
llvm::outs() << "\n";
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
} // end anonymous namespace
|
|
|
|
SILTransform *swift::createMemBehaviorDumper() {
|
|
return new MemBehaviorDumper();
|
|
}
|