mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 13:33:37 +02:00
Add an initial version of the CompleteBUDataStructures class, which is currently
identical to the BU pass, but has an accurate call graph llvm-svn: 9956
This commit is contained in:
parent
3c72015317
commit
55ad096ff8
75
lib/Analysis/DataStructure/CompleteBottomUp.cpp
Normal file
75
lib/Analysis/DataStructure/CompleteBottomUp.cpp
Normal file
@ -0,0 +1,75 @@
|
|||||||
|
//===- CompleteBottomUp.cpp - Complete Bottom-Up Data Structure Graphs ----===//
|
||||||
|
//
|
||||||
|
// The LLVM Compiler Infrastructure
|
||||||
|
//
|
||||||
|
// This file was developed by the LLVM research group and is distributed under
|
||||||
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
||||||
|
//
|
||||||
|
//===----------------------------------------------------------------------===//
|
||||||
|
//
|
||||||
|
// This is the exact same as the bottom-up graphs, but we use take a completed
|
||||||
|
// call graph and inline all indirect callees into their callers graphs, making
|
||||||
|
// the result more useful for things like pool allocation.
|
||||||
|
//
|
||||||
|
//===----------------------------------------------------------------------===//
|
||||||
|
|
||||||
|
#include "llvm/Analysis/DataStructure.h"
|
||||||
|
#include "llvm/Module.h"
|
||||||
|
#include "llvm/Analysis/DSGraph.h"
|
||||||
|
using namespace llvm;
|
||||||
|
|
||||||
|
namespace {
|
||||||
|
RegisterAnalysis<CompleteBUDataStructures>
|
||||||
|
X("cbudatastructure", "'Complete' Bottom-up Data Structure Analysis");
|
||||||
|
}
|
||||||
|
|
||||||
|
using namespace DS;
|
||||||
|
|
||||||
|
// run - Calculate the bottom up data structure graphs for each function in the
|
||||||
|
// program.
|
||||||
|
//
|
||||||
|
bool CompleteBUDataStructures::run(Module &M) {
|
||||||
|
BUDataStructures &BU = getAnalysis<BUDataStructures>();
|
||||||
|
GlobalsGraph = new DSGraph(BU.getGlobalsGraph());
|
||||||
|
GlobalsGraph->setPrintAuxCalls();
|
||||||
|
|
||||||
|
// Our call graph is the same as the BU data structures call graph
|
||||||
|
ActualCallees = BU.getActualCallees();
|
||||||
|
|
||||||
|
#if 1 // REMOVE ME EVENTUALLY
|
||||||
|
// FIXME: TEMPORARY (remove once finalization of indirect call sites in the
|
||||||
|
// globals graph has been implemented in the BU pass)
|
||||||
|
TDDataStructures &TD = getAnalysis<TDDataStructures>();
|
||||||
|
|
||||||
|
// The call graph extractable from the TD pass is _much more complete_ and
|
||||||
|
// trustable than that generated by the BU pass so far. Until this is fixed,
|
||||||
|
// we hack it like this:
|
||||||
|
for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI) {
|
||||||
|
if (MI->isExternal()) continue;
|
||||||
|
const std::vector<DSCallSite> &CSs = TD.getDSGraph(*MI).getFunctionCalls();
|
||||||
|
|
||||||
|
for (unsigned CSi = 0, e = CSs.size(); CSi != e; ++CSi) {
|
||||||
|
if (CSs[CSi].isIndirectCall()) {
|
||||||
|
Instruction *TheCall = CSs[CSi].getCallSite().getInstruction();
|
||||||
|
|
||||||
|
const std::vector<GlobalValue*> &Callees =
|
||||||
|
CSs[CSi].getCalleeNode()->getGlobals();
|
||||||
|
for (unsigned i = 0, e = Callees.size(); i != e; ++i)
|
||||||
|
if (Function *F = dyn_cast<Function>(Callees[i]))
|
||||||
|
ActualCallees.insert(std::make_pair(TheCall, F));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Start by copying all of the BU data structures graphs over, verbatim.
|
||||||
|
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
|
||||||
|
if (!I->isExternal()) {
|
||||||
|
DSInfo[I] = new DSGraph(BU.getDSGraph(*I));
|
||||||
|
DSInfo[I]->setGlobalsGraph(GlobalsGraph);
|
||||||
|
DSInfo[I]->setPrintAuxCalls();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
return false;
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user