Preparation for Optimal Edge Profiling:

Optimal edge profiling is only possible when blocks with no predecessors get an
virtual edge (BB,0) that counts the execution frequencies of this
function-exiting blocks.
This patch makes the necessary changes before actually enabling optimal edge profiling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80667 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/include/llvm/Analysis/ProfileInfo.h b/include/llvm/Analysis/ProfileInfo.h
index 16bfc13..94a8666 100644
--- a/include/llvm/Analysis/ProfileInfo.h
+++ b/include/llvm/Analysis/ProfileInfo.h
@@ -63,8 +63,13 @@ namespace llvm {
 
     // getFunction() - Returns the Function for an Edge, checking for validity.
     static const Function* getFunction(Edge e) {
-      assert(e.second && "Invalid ProfileInfo::Edge");
-      return e.second->getParent();
+      if (e.first) {
+        return e.first->getParent();
+      } else if (e.second) {
+        return e.second->getParent();
+      }
+      assert(0 && "Invalid ProfileInfo::Edge");
+      return (const Function*)0;
     }
 
     // getEdge() - Creates an Edge from two BasicBlocks.