LLVM 20.0.0git
CFGSCCPrinter.cpp
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1//===- CFGSCCPrinter.cpp --------------------------------------------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8
11#include "llvm/IR/CFG.h"
12
13using namespace llvm;
14
17 unsigned SccNum = 0;
18 OS << "SCCs for Function " << F.getName() << " in PostOrder:";
19 for (scc_iterator<Function *> SCCI = scc_begin(&F); !SCCI.isAtEnd(); ++SCCI) {
20 const std::vector<BasicBlock *> &NextSCC = *SCCI;
21 OS << "\nSCC #" << ++SccNum << ": ";
22 bool First = true;
23 for (BasicBlock *BB : NextSCC) {
24 if (First)
25 First = false;
26 else
27 OS << ", ";
28 BB->printAsOperand(OS, false);
29 }
30 if (NextSCC.size() == 1 && SCCI.hasCycle())
31 OS << " (Has self-loop).";
32 }
33 OS << "\n";
34
36}
This file provides various utilities for inspecting and working with the control flow graph in LLVM I...
#define F(x, y, z)
Definition: MD5.cpp:55
This builds on the llvm/ADT/GraphTraits.h file to find the strongly connected components (SCCs) of a ...
A container for analyses that lazily runs them and caches their results.
Definition: PassManager.h:253
LLVM Basic Block Representation.
Definition: BasicBlock.h:61
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM)
A set of analyses that are preserved following a run of a transformation pass.
Definition: Analysis.h:111
static PreservedAnalyses all()
Construct a special preserved set that preserves all passes.
Definition: Analysis.h:117
Enumerate the SCCs of a directed graph in reverse topological order of the SCC DAG.
Definition: SCCIterator.h:49
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
scc_iterator< T > scc_begin(const T &G)
Construct the begin iterator for a deduced graph type T.
Definition: SCCIterator.h:233
@ First
Helpers to iterate all locations in the MemoryEffectsBase class.