mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-05 02:16:46 +00:00
8e27cb2f34
This was originally a pointer to support pass managers which didn't use AnalysisManagers. However, that doesn't realistically come up much and the complexity of supporting it doesn't really make sense. In fact, *many* parts of the pass manager were just assuming the pointer was never null already. This at least makes it much more explicit and clear. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263219 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
//===- PostDominators.cpp - Post-Dominator Calculation --------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the post-dominator construction algorithms.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/PostDominators.h"
|
|
#include "llvm/ADT/DepthFirstIterator.h"
|
|
#include "llvm/ADT/SetOperations.h"
|
|
#include "llvm/IR/CFG.h"
|
|
#include "llvm/IR/Instructions.h"
|
|
#include "llvm/IR/PassManager.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/GenericDomTreeConstruction.h"
|
|
using namespace llvm;
|
|
|
|
#define DEBUG_TYPE "postdomtree"
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// PostDominatorTree Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
char PostDominatorTreeWrapperPass::ID = 0;
|
|
INITIALIZE_PASS(PostDominatorTreeWrapperPass, "postdomtree",
|
|
"Post-Dominator Tree Construction", true, true)
|
|
|
|
bool PostDominatorTreeWrapperPass::runOnFunction(Function &F) {
|
|
DT.recalculate(F);
|
|
return false;
|
|
}
|
|
|
|
void PostDominatorTreeWrapperPass::print(raw_ostream &OS, const Module *) const {
|
|
DT.print(OS);
|
|
}
|
|
|
|
FunctionPass* llvm::createPostDomTree() {
|
|
return new PostDominatorTreeWrapperPass();
|
|
}
|
|
|
|
char PostDominatorTreeAnalysis::PassID;
|
|
|
|
PostDominatorTree PostDominatorTreeAnalysis::run(Function &F) {
|
|
PostDominatorTree PDT;
|
|
PDT.recalculate(F);
|
|
return PDT;
|
|
}
|
|
|
|
PostDominatorTreePrinterPass::PostDominatorTreePrinterPass(raw_ostream &OS)
|
|
: OS(OS) {}
|
|
|
|
PreservedAnalyses
|
|
PostDominatorTreePrinterPass::run(Function &F, FunctionAnalysisManager &AM) {
|
|
OS << "PostDominatorTree for function: " << F.getName() << "\n";
|
|
AM.getResult<PostDominatorTreeAnalysis>(F).print(OS);
|
|
|
|
return PreservedAnalyses::all();
|
|
}
|