mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
aa78fc4f6e
Summary: DominatorTreeBase used to have IsPostDominators (bool) member to indicate if the tree is a dominator or a postdominator tree. This made it possible to switch between the two 'modes' at runtime, but it isn't used in practice anywhere. This patch makes IsPostDominator a template argument. This way, it is easier to switch between different algorithms at compile-time based on this argument and design external utilities around it. It also makes it impossible to incidentally assign a postdominator tree to a dominator tree (and vice versa), and to further simplify template code in GenericDominatorTreeConstruction. Reviewers: dberlin, sanjoy, davide, grosser Reviewed By: dberlin Subscribers: mzolotukhin, llvm-commits Differential Revision: https://reviews.llvm.org/D35315 llvm-svn: 308040
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
//===- MachinePostDominators.cpp -Machine 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 simple dominator construction algorithms for finding
|
|
// post dominators on machine functions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MachinePostDominators.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace llvm {
|
|
template class DominatorTreeBase<MachineBasicBlock, true>; // PostDomTreeBase
|
|
}
|
|
|
|
char MachinePostDominatorTree::ID = 0;
|
|
|
|
//declare initializeMachinePostDominatorTreePass
|
|
INITIALIZE_PASS(MachinePostDominatorTree, "machinepostdomtree",
|
|
"MachinePostDominator Tree Construction", true, true)
|
|
|
|
MachinePostDominatorTree::MachinePostDominatorTree() : MachineFunctionPass(ID) {
|
|
initializeMachinePostDominatorTreePass(*PassRegistry::getPassRegistry());
|
|
DT = new PostDomTreeBase<MachineBasicBlock>();
|
|
}
|
|
|
|
FunctionPass *
|
|
MachinePostDominatorTree::createMachinePostDominatorTreePass() {
|
|
return new MachinePostDominatorTree();
|
|
}
|
|
|
|
bool
|
|
MachinePostDominatorTree::runOnMachineFunction(MachineFunction &F) {
|
|
DT->recalculate(F);
|
|
return false;
|
|
}
|
|
|
|
MachinePostDominatorTree::~MachinePostDominatorTree() {
|
|
delete DT;
|
|
}
|
|
|
|
void
|
|
MachinePostDominatorTree::getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
MachineFunctionPass::getAnalysisUsage(AU);
|
|
}
|
|
|
|
void
|
|
MachinePostDominatorTree::print(llvm::raw_ostream &OS, const Module *M) const {
|
|
DT->print(OS);
|
|
}
|