diff options
author | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
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committer | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
commit | 0b57cec536236d46e3dba9bd041533462f33dbb7 (patch) | |
tree | 56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm-project/llvm/lib/Analysis/Trace.cpp | |
parent | 718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff) |
Notes
Diffstat (limited to 'contrib/llvm-project/llvm/lib/Analysis/Trace.cpp')
-rw-r--r-- | contrib/llvm-project/llvm/lib/Analysis/Trace.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Analysis/Trace.cpp b/contrib/llvm-project/llvm/lib/Analysis/Trace.cpp new file mode 100644 index 000000000000..879c7172d038 --- /dev/null +++ b/contrib/llvm-project/llvm/lib/Analysis/Trace.cpp @@ -0,0 +1,53 @@ +//===- 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 |