From 6de2c08bc400b4aca9fb46684e8bdb56eed9b09f Mon Sep 17 00:00:00 2001 From: dim Date: Sun, 2 Dec 2012 13:10:19 +0000 Subject: Vendor import of llvm release_32 branch r168974 (effectively, 3.2 RC2): http://llvm.org/svn/llvm-project/llvm/branches/release_32@168974 --- include/llvm/ADT/SmallBitVector.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/llvm/ADT/SmallBitVector.h') diff --git a/include/llvm/ADT/SmallBitVector.h b/include/llvm/ADT/SmallBitVector.h index 7a645e0..a9cd54e 100644 --- a/include/llvm/ADT/SmallBitVector.h +++ b/include/llvm/ADT/SmallBitVector.h @@ -300,6 +300,21 @@ public: return *this; } + /// set - Efficiently set a range of bits in [I, E) + SmallBitVector &set(unsigned I, unsigned E) { + assert(I <= E && "Attempted to set backwards range!"); + assert(E <= size() && "Attempted to set out-of-bounds range!"); + if (I == E) return *this; + if (isSmall()) { + uintptr_t EMask = ((uintptr_t)1) << E; + uintptr_t IMask = ((uintptr_t)1) << I; + uintptr_t Mask = EMask - IMask; + setSmallBits(getSmallBits() | Mask); + } else + getPointer()->set(I, E); + return *this; + } + SmallBitVector &reset() { if (isSmall()) setSmallBits(0); @@ -316,6 +331,21 @@ public: return *this; } + /// reset - Efficiently reset a range of bits in [I, E) + SmallBitVector &reset(unsigned I, unsigned E) { + assert(I <= E && "Attempted to reset backwards range!"); + assert(E <= size() && "Attempted to reset out-of-bounds range!"); + if (I == E) return *this; + if (isSmall()) { + uintptr_t EMask = ((uintptr_t)1) << E; + uintptr_t IMask = ((uintptr_t)1) << I; + uintptr_t Mask = EMask - IMask; + setSmallBits(getSmallBits() & ~Mask); + } else + getPointer()->reset(I, E); + return *this; + } + SmallBitVector &flip() { if (isSmall()) setSmallBits(~getSmallBits()); -- cgit v1.1