[llvm-commits] [llvm] r157554 - /llvm/trunk/include/llvm/ADT/TinyPtrVector.h

[Chris Lattner]

Author: lattner
Date: Sun May 27 20:29:59 2012
New Revision: 157554

URL: http://llvm.org/viewvc/llvm-project?rev=157554&view=rev
Log:
add some helper methods to make the type more uniform.

Modified:
    llvm/trunk/include/llvm/ADT/TinyPtrVector.h

Modified: llvm/trunk/include/llvm/ADT/TinyPtrVector.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/TinyPtrVector.h?rev=157554&r1=157553&r2=157554&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/TinyPtrVector.h (original)
+++ llvm/trunk/include/llvm/ADT/TinyPtrVector.h Sun May 27 20:29:59 2012
@@ -120,6 +120,14 @@
     return Val.template get<VecTy*>()->front();
   }
   
+  EltTy back() const {
+    assert(!empty() && "vector empty");
+    if (EltTy V = Val.template dyn_cast<EltTy>())
+      return V;
+    return Val.template get<VecTy*>()->back();
+  }
+
+  
   void push_back(EltTy NewVal) {
     assert(NewVal != 0 && "Can't add a null value");
     
@@ -139,6 +147,15 @@
     Val.template get<VecTy*>()->push_back(NewVal);
   }
   
+  void pop_back() {
+    // If we have a single value, convert to empty.
+    if (Val.template is<EltTy>())
+      Val = (EltTy)0;
+    else if (VecTy *Vec = Val.template get<VecTy*>())
+      Vec->pop_back();
+  }
+
+  
   void clear() {
     // If we have a single value, convert to empty.
     if (Val.template is<EltTy>()) {