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