Identify Analysis pass.
Do not run analysis pass again if analysis info is still available.
This fixes PR1441.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48476 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp
index a96e9d0..7b61ff8 100644
--- a/lib/Analysis/CFGPrinter.cpp
+++ b/lib/Analysis/CFGPrinter.cpp
@@ -94,6 +94,9 @@
static char ID; // Pass identifcation, replacement for typeid
CFGViewer() : FunctionPass((intptr_t)&ID) {}
+ /// isAnalysis - Return true if this pass is implementing an analysis pass.
+ virtual bool isAnalysis() const { return true; }
+
virtual bool runOnFunction(Function &F) {
F.viewCFG();
return false;
@@ -114,6 +117,9 @@
static char ID; // Pass identifcation, replacement for typeid
CFGOnlyViewer() : FunctionPass((intptr_t)&ID) {}
+ /// isAnalysis - Return true if this pass is implementing an analysis pass.
+ virtual bool isAnalysis() const { return true; }
+
virtual bool runOnFunction(Function &F) {
CFGOnly = true;
F.viewCFG();
@@ -137,6 +143,9 @@
CFGPrinter() : FunctionPass((intptr_t)&ID) {}
explicit CFGPrinter(intptr_t pid) : FunctionPass(pid) {}
+ /// isAnalysis - Return true if this pass is implementing an analysis pass.
+ virtual bool isAnalysis() const { return true; }
+
virtual bool runOnFunction(Function &F) {
std::string Filename = "cfg." + F.getName() + ".dot";
cerr << "Writing '" << Filename << "'...";
@@ -164,6 +173,10 @@
struct VISIBILITY_HIDDEN CFGOnlyPrinter : public CFGPrinter {
static char ID; // Pass identification, replacement for typeid
CFGOnlyPrinter() : CFGPrinter((intptr_t)&ID) {}
+
+ /// isAnalysis - Return true if this pass is implementing an analysis pass.
+ virtual bool isAnalysis() const { return true; }
+
virtual bool runOnFunction(Function &F) {
bool OldCFGOnly = CFGOnly;
CFGOnly = true;