[llvm] r212163 - Add range for-loop iterator adapter for cases in SwitchInst.

[Owen Anderson]

Author: resistor
Date: Wed Jul  2 00:32:13 2014
New Revision: 212163

URL: http://llvm.org/viewvc/llvm-project?rev=212163&view=rev
Log:
Add range for-loop iterator adapter for cases in SwitchInst.

Patch by Marcello Maggioni, reviewed by Reid Kleckner.

Modified:
    llvm/trunk/include/llvm/IR/Instructions.h

Modified: llvm/trunk/include/llvm/IR/Instructions.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Instructions.h?rev=212163&r1=212162&r2=212163&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/Instructions.h (original)
+++ llvm/trunk/include/llvm/IR/Instructions.h Wed Jul  2 00:32:13 2014
@@ -2661,6 +2661,9 @@ public:
       assert(RHS.SI == SI && "Incompatible operators.");
       return RHS.Index != Index;
     }
+    Self &operator*() {
+      return *this;
+    }
   };
 
   typedef CaseIteratorT<const SwitchInst, const ConstantInt, const BasicBlock>
@@ -2741,6 +2744,17 @@ public:
   ConstCaseIt case_end() const {
     return ConstCaseIt(this, getNumCases());
   }
+
+  /// cases - iteration adapter for range-for loops.
+  iterator_range<CaseIt> cases() {
+    return iterator_range<CaseIt>(case_begin(), case_end());
+  }
+
+  /// cases - iteration adapter for range-for loops.
+  iterator_range<ConstCaseIt> cases() const {
+    return iterator_range<ConstCaseIt>(case_begin(), case_end());
+  }
+
   /// Returns an iterator that points to the default case.
   /// Note: this iterator allows to resolve successor only. Attempt
   /// to resolve case value causes an assertion.