diff options
Diffstat (limited to 'include/clang/AST/CharUnits.h')
| -rw-r--r-- | include/clang/AST/CharUnits.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/clang/AST/CharUnits.h b/include/clang/AST/CharUnits.h index 12e74b3..082c672 100644 --- a/include/clang/AST/CharUnits.h +++ b/include/clang/AST/CharUnits.h @@ -171,6 +171,17 @@ namespace clang { Align.Quantity)); } + /// Given that this is a non-zero alignment value, what is the + /// alignment at the given offset? + CharUnits alignmentAtOffset(CharUnits offset) { + // alignment: 0010000 + // offset: 1011100 + // lowBits: 0001011 + // result: 0000100 + QuantityType lowBits = (Quantity-1) & (offset.Quantity-1); + return CharUnits((lowBits + 1) & ~lowBits); + } + }; // class CharUnit } // namespace clang |
