diff options
Diffstat (limited to 'include/llvm/CodeGen/Analysis.h')
| -rw-r--r-- | include/llvm/CodeGen/Analysis.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/Analysis.h b/include/llvm/CodeGen/Analysis.h index 3132999..c4b94ed 100644 --- a/include/llvm/CodeGen/Analysis.h +++ b/include/llvm/CodeGen/Analysis.h @@ -31,10 +31,21 @@ class SDValue; class SelectionDAG; struct EVT; -/// ComputeLinearIndex - Given an LLVM IR aggregate type and a sequence -/// of insertvalue or extractvalue indices that identify a member, return -/// the linearized index of the start of the member. +/// \brief Compute the linearized index of a member in a nested +/// aggregate/struct/array. /// +/// Given an LLVM IR aggregate type and a sequence of insertvalue or +/// extractvalue indices that identify a member, return the linearized index of +/// the start of the member, i.e the number of element in memory before the +/// seeked one. This is disconnected from the number of bytes. +/// +/// \param Ty is the type indexed by \p Indices. +/// \param Indices is an optional pointer in the indices list to the current +/// index. +/// \param IndicesEnd is the end of the indices list. +/// \param CurIndex is the current index in the recursion. +/// +/// \returns \p CurIndex plus the linear index in \p Ty the indices list. unsigned ComputeLinearIndex(Type *Ty, const unsigned *Indices, const unsigned *IndicesEnd, |