LLVM 19.0.0git
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1//===- Trace.cpp - Implementation of Trace class --------------------------===//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
9// This class represents a single trace of LLVM basic blocks. A trace is a
10// single entry, multiple exit, region of code that is often hot. Trace-based
11// optimizations treat traces almost like they are a large, strange, basic
12// block: because the trace path is assumed to be hot, optimizations for the
13// fall-through path are made at the expense of the non-fall-through paths.
17#include "llvm/Analysis/Trace.h"
18#include "llvm/Config/llvm-config.h"
19#include "llvm/IR/BasicBlock.h"
20#include "llvm/IR/Function.h"
22#include "llvm/Support/Debug.h"
25using namespace llvm;
28 return getEntryBasicBlock()->getParent();
32 return getFunction()->getParent();
35/// print - Write trace to output stream.
36void Trace::print(raw_ostream &O) const {
38 O << "; Trace from function " << F->getName() << ", blocks:\n";
39 for (const_iterator i = begin(), e = end(); i != e; ++i) {
40 O << "; ";
41 (*i)->printAsOperand(O, true, getModule());
42 O << "\n";
43 }
44 O << "; Trace parent function: \n" << *F;
47#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
48/// dump - Debugger convenience method; writes trace to standard error
49/// output stream.
51 print(dbgs());
Mark debug helper function definitions like dump() that should not be stripped from debug builds.
Definition: Compiler.h:529
#define F(x, y, z)
Definition: MD5.cpp:55
const Function * getParent() const
Return the enclosing method, or null if none.
Definition: BasicBlock.h:206
Module * getParent()
Get the module that this global value is contained inside of...
Definition: GlobalValue.h:656
A Module instance is used to store all the information related to an LLVM module.
Definition: Module.h:65
void dump() const
dump - Debugger convenience method; writes trace to standard error output stream.
Definition: Trace.cpp:50
iterator begin()
Definition: Trace.h:85
BasicBlock * getEntryBasicBlock() const
getEntryBasicBlock - Return the entry basic block (first block) of the trace.
Definition: Trace.h:43
Function * getFunction() const
getFunction - Return this trace's parent function.
Definition: Trace.cpp:27
iterator end()
Definition: Trace.h:87
void print(raw_ostream &O) const
print - Write trace to output stream.
Definition: Trace.cpp:36
Module * getModule() const
getModule - Return this Module that contains this trace's parent function.
Definition: Trace.cpp:31
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163