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//===- Trace.cpp - Implementation of Trace class --------------------------===//
//
// 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 class represents a single trace of LLVM basic blocks. A trace is a
// single entry, multiple exit, region of code that is often hot. Trace-based
// optimizations treat traces almost like they are a large, strange, basic
// block: because the trace path is assumed to be hot, optimizations for the
// fall-through path are made at the expense of the non-fall-through paths.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/Trace.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
Function *Trace::getFunction() const {
return getEntryBasicBlock()->getParent();
}
Module *Trace::getModule() const {
return getFunction()->getParent();
}
/// print - Write trace to output stream.
void Trace::print(raw_ostream &O) const {
Function *F = getFunction();
O << "; Trace from function " << F->getName() << ", blocks:\n";
for (const_iterator i = begin(), e = end(); i != e; ++i) {
O << "; ";
(*i)->printAsOperand(O, true, getModule());
O << "\n";
}
O << "; Trace parent function: \n" << *F;
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
/// dump - Debugger convenience method; writes trace to standard error
/// output stream.
LLVM_DUMP_METHOD void Trace::dump() const {
print(dbgs());
}
#endif
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