[llvm-commits] [llvm] r61548 - /llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp

[Duncan Sands]

Author: baldrick
Date: Thu Jan  1 14:45:19 2009
New Revision: 61548

URL: http://llvm.org/viewvc/llvm-project?rev=61548&view=rev
Log:
Mention that this pass does escape analysis in the
leading comments.

Modified:
    llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp

Modified: llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp?rev=61548&r1=61547&r2=61548&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp Thu Jan  1 14:45:19 2009
@@ -9,8 +9,10 @@
 //
 // This file implements a simple interprocedural pass which walks the
 // call-graph, looking for functions which do not access or only read
-// non-local memory, and marking them readnone/readonly.  It implements
-// this as a bottom-up traversal of the call-graph.
+// non-local memory, and marking them readnone/readonly.  It addition,
+// it deduces which function arguments (of pointer type) do not escape,
+// and marks them nocapture.  It implements this as a bottom-up traversal
+// of the call-graph.
 //
 //===----------------------------------------------------------------------===//
 
@@ -44,7 +46,7 @@
     // AddNoCaptureAttrs - Deduce nocapture attributes for the SCC.
     bool AddNoCaptureAttrs(const std::vector<CallGraphNode *> &SCC);
 
-    // isCaptured - Returns whether this pointer value is captured.
+    // isCaptured - Returns true if this pointer value escapes.
     bool isCaptured(Function &F, Value *V);
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {