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Allow printing of various types of alias analysis results

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5520 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-02-09 20:40:13 +00:00
parent 762d2f0897
commit 638b381713
1 changed files with 27 additions and 4 deletions
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31
lib/Analysis/AliasAnalysisEvaluator.cpp
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@ -13,10 +13,16 @@
#include "llvm/Analysis/AliasAnalysis.h" #include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Pass.h" #include "llvm/Pass.h"
#include "llvm/Function.h" #include "llvm/Function.h"
#include "llvm/Support/InstIterator.h"
#include "llvm/Type.h" #include "llvm/Type.h"
#include "llvm/Support/InstIterator.h"
#include "llvm/Assembly/Writer.h"
#include "Support/CommandLine.h"
namespace { namespace {
cl::opt<bool> PrintNo ("print-no-alias-results", cl::ReallyHidden);
cl::opt<bool> PrintMay ("print-may-alias-results", cl::ReallyHidden);
cl::opt<bool> PrintMust("print-must-alias-results", cl::ReallyHidden);
class AAEval : public FunctionPass { class AAEval : public FunctionPass {
unsigned No, May, Must; unsigned No, May, Must;
@ -35,6 +41,14 @@ namespace {
X("aa-eval", "Exhaustive Alias Analysis Precision Evaluator"); X("aa-eval", "Exhaustive Alias Analysis Precision Evaluator");
} }
static inline void PrintResults(const char *Msg, bool P, Value *V1, Value *V2) {
if (P) {
std::cerr << " " << Msg << ":\t";
WriteAsOperand(std::cerr, V1) << ", ";
WriteAsOperand(std::cerr, V2) << "\n";
}
}
bool AAEval::runOnFunction(Function &F) { bool AAEval::runOnFunction(Function &F) {
AliasAnalysis &AA = getAnalysis<AliasAnalysis>(); AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
@ -48,14 +62,23 @@ bool AAEval::runOnFunction(Function &F) {
if (isa<PointerType>((*I)->getType())) // Add all pointer instructions if (isa<PointerType>((*I)->getType())) // Add all pointer instructions
Pointers.push_back(*I); Pointers.push_back(*I);
if (PrintNo || PrintMay || PrintMust)
std::cerr << "Function: " << F.getName() << "\n";
// iterate over the worklist, and run the full (n^2)/2 disambiguations // iterate over the worklist, and run the full (n^2)/2 disambiguations
for (std::vector<Value *>::iterator I1 = Pointers.begin(), E = Pointers.end(); for (std::vector<Value *>::iterator I1 = Pointers.begin(), E = Pointers.end();
I1 != E; ++I1) I1 != E; ++I1)
for (std::vector<Value *>::iterator I2 = Pointers.begin(); I2 != I1; ++I2) for (std::vector<Value *>::iterator I2 = Pointers.begin(); I2 != I1; ++I2)
switch (AA.alias(*I1, *I2)) { switch (AA.alias(*I1, *I2)) {
case AliasAnalysis::NoAlias: ++No; break; case AliasAnalysis::NoAlias:
case AliasAnalysis::MayAlias: ++May; break; PrintResults("No", PrintNo, *I1, *I2);
case AliasAnalysis::MustAlias: ++Must; break; ++No; break;
case AliasAnalysis::MayAlias:
PrintResults("May", PrintMay, *I1, *I2);
++May; break;
case AliasAnalysis::MustAlias:
PrintResults("Must", PrintMust, *I1, *I2);
++Must; break;
default: default:
std::cerr << "Unknown alias query result!\n"; std::cerr << "Unknown alias query result!\n";
} }