diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Support/Alignment.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/llvm/Support/Alignment.h b/include/llvm/Support/Alignment.h new file mode 100644 index 0000000000..41259b69ba --- /dev/null +++ b/include/llvm/Support/Alignment.h @@ -0,0 +1,28 @@ +//===----------- Alignment.h - Alignment computation ------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by Duncan Sands and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines utilities for computing alignments. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_SUPPORT_ALIGNMENT_H +#define LLVM_SUPPORT_ALIGNMENT_H + +namespace llvm { + +/// MinAlign - A and B are either alignments or offsets. Return the minimum +/// alignment that may be assumed after adding the two together. + +static inline unsigned MinAlign(unsigned A, unsigned B) { + // The largest power of 2 that divides both A and B. + return (A | B) & -(A | B); +} + +} // end namespace llvm +#endif |