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Add hack to only consider indirect calls indirect if they do more than cast 

their source function

llvm-svn: 4723
This commit is contained in:
Chris Lattner 2002-11-17 22:17:12 +00:00
parent 1e3652955b
commit 29a320bfcf
1 changed files with 14 additions and 6 deletions
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20
llvm/lib/Analysis/DataStructure/DataStructureStats.cpp
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@ -11,7 +11,7 @@
#include <vector>
namespace {
Statistic<double> TotalNumCallees("totalcallees",
Statistic<> TotalNumCallees("totalcallees",
"Total number of callee functions at all indirect call sites");
Statistic<> NumIndirectCalls("numindirect",
"Total number of indirect call sites in the program");
@ -39,6 +39,14 @@ namespace {
static RegisterAnalysis<DSGraphStats> Z("dsstats", "DS Graph Statistics");
}
static bool isIndirectCallee(Value *V) {
if (isa<Function>(V)) return false;
if (CastInst *CI = dyn_cast<CastInst>(V))
return isIndirectCallee(CI->getOperand(0));
return true;
}
void DSGraphStats::countCallees(const Function& F,
const DSGraph& tdGraph)
@ -47,7 +55,7 @@ void DSGraphStats::countCallees(const Function& F,
const std::vector<DSCallSite>& callSites = tdGraph.getFunctionCalls();
for (unsigned i=0, N = callSites.size(); i < N; ++i)
if (callSites[i].getCallInst().getCalledFunction() == NULL)
if (isIndirectCallee(callSites[i].getCallInst().getCalledValue()))
{ // This is an indirect function call
std::vector<GlobalValue*> Callees =
callSites[i].getCallee().getNode()->getGlobals();
@ -66,10 +74,10 @@ void DSGraphStats::countCallees(const Function& F,
TotalNumCallees += totalNumCallees;
NumIndirectCalls += numIndirectCalls;
std::cout << " In function " << F.getName() << " : "
<< (double) (numIndirectCalls == 0? 0.0
: (totalNumCallees / (double) numIndirectCalls))
<< " avg. callees per indirect call\n";
if (numIndirectCalls)
std::cout << " In function " << F.getName() << ": "
<< (totalNumCallees / (double) numIndirectCalls)
<< " average callees per indirect call\n";
}