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1 | //===- Trace.cpp - Implementation of Trace class --------------------------===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is distributed under the University of Illinois Open Source | |
6 | // License. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | // | |
10 | // This class represents a single trace of LLVM basic blocks. A trace is a | |
11 | // single entry, multiple exit, region of code that is often hot. Trace-based | |
12 | // optimizations treat traces almost like they are a large, strange, basic | |
13 | // block: because the trace path is assumed to be hot, optimizations for the | |
14 | // fall-through path are made at the expense of the non-fall-through paths. | |
15 | // | |
16 | //===----------------------------------------------------------------------===// | |
17 | ||
18 | #include "llvm/Analysis/Trace.h" | |
970d7e83 | 19 | #include "llvm/IR/Function.h" |
223e47cc LB |
20 | #include "llvm/Support/Debug.h" |
21 | #include "llvm/Support/raw_ostream.h" | |
22 | using namespace llvm; | |
23 | ||
24 | Function *Trace::getFunction() const { | |
25 | return getEntryBasicBlock()->getParent(); | |
26 | } | |
27 | ||
28 | Module *Trace::getModule() const { | |
29 | return getFunction()->getParent(); | |
30 | } | |
31 | ||
32 | /// print - Write trace to output stream. | |
33 | /// | |
34 | void Trace::print(raw_ostream &O) const { | |
35 | Function *F = getFunction(); | |
36 | O << "; Trace from function " << F->getName() << ", blocks:\n"; | |
37 | for (const_iterator i = begin(), e = end(); i != e; ++i) { | |
38 | O << "; "; | |
1a4d82fc | 39 | (*i)->printAsOperand(O, true, getModule()); |
223e47cc LB |
40 | O << "\n"; |
41 | } | |
42 | O << "; Trace parent function: \n" << *F; | |
43 | } | |
44 | ||
45 | #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) | |
46 | /// dump - Debugger convenience method; writes trace to standard error | |
47 | /// output stream. | |
48 | /// | |
49 | void Trace::dump() const { | |
50 | print(dbgs()); | |
51 | } | |
52 | #endif |