Add an all() method to BitVector, for testing whether all bits are set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114830 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/llvm/ADT/SmallBitVector.h b/include/llvm/ADT/SmallBitVector.h
index 3441d0a90c..b15b3ee041 100644
--- a/include/llvm/ADT/SmallBitVector.h
+++ b/include/llvm/ADT/SmallBitVector.h
@@ -187,6 +187,13 @@ public:
     return getPointer()->any();
   }
 
+  /// all - Returns true if all bits are set.
+  bool all() const {
+    if (isSmall())
+      return getSmallBits() == (uintptr_t(1) << getSmallSize()) - 1;
+    return getPointer()->all();
+  }
+
   /// none - Returns true if none of the bits are set.
   bool none() const {
     if (isSmall())