diff options
| -rw-r--r-- | include/llvm/Analysis/DependenceAnalysis.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/llvm/Analysis/DependenceAnalysis.h b/include/llvm/Analysis/DependenceAnalysis.h index 39f57208ee..1983c00c57 100644 --- a/include/llvm/Analysis/DependenceAnalysis.h +++ b/include/llvm/Analysis/DependenceAnalysis.h @@ -18,6 +18,16 @@ // of memory references in a function, returning either NULL, for no dependence, // or a more-or-less detailed description of the dependence between them. // +// This pass exists to support the DependenceGraph pass. There are two separate +// passes because there's a useful separation of concerns. A dependence exists +// if two conditions are met: +// +// 1) Two instructions reference the same memory location, and +// 2) There is a flow of control leading from one instruction to the other. +// +// DependenceAnalysis attacks the first condition; DependenceGraph will attack +// the second (it's not yet ready). +// // Please note that this is work in progress and the interface is subject to // change. // |