Make this example pass use some things from lib/Support (EscapeString,

SlowOperatingInfo, Statistics). Besides providing an example of how to
use these facilities, it also serves to debug problems with runtime linking
when dlopening a loadable module. These three support facilities exercise
different combinations of Text/Weak Weak/Text and Text/Text linking
between the executable and the module.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29552 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 2 deletions

diff --git a/lib/Transforms/Hello/Hello.cpp b/lib/Transforms/Hello/Hello.cpp
index b7fc870..804c3a7 100644
--- a/lib/Transforms/Hello/Hello.cpp
+++ b/lib/Transforms/Hello/Hello.cpp
@@ -14,14 +14,23 @@
 
 #include "llvm/Pass.h"
 #include "llvm/Function.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/SlowOperationInformer.h"
+#include "llvm/ADT/Statistic.h"
 #include <iostream>
 using namespace llvm;
 
 namespace {
+  Statistic<int> HelloCounter("hellocount",
+      "Counts number of functions greeted");
   // Hello - The first implementation, without getAnalysisUsage.
   struct Hello : public FunctionPass {
     virtual bool runOnFunction(Function &F) {
-      std::cerr << "Hello: " << F.getName() << "\n";
+      SlowOperationInformer soi("EscapeString");
+      HelloCounter++;
+      std::string fname = F.getName();
+      EscapeString(fname);
+      std::cerr << "Hello: " << fname << "\n";
       return false;
     }
   };
@@ -30,7 +39,11 @@ namespace {
   // Hello2 - The second implementation with getAnalysisUsage implemented.
   struct Hello2 : public FunctionPass {
     virtual bool runOnFunction(Function &F) {
-      std::cerr << "Hello: " << F.getName() << "\n";
+      SlowOperationInformer soi("EscapeString");
+      HelloCounter++;
+      std::string fname = F.getName();
+      EscapeString(fname);
+      std::cerr << "Hello: " << fname << "\n";
       return false;
     }