finish a half formed thought :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80334 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index 1468155..084f3f0 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -60,7 +60,10 @@
/// do so and update the CallGraph for this operation.
///
/// This function also does some basic book-keeping to update the IR. The
-/// InlinedArrayAllocas map keeps track of any
+/// InlinedArrayAllocas map keeps track of any allocas that are already
+/// available from other functions inlined into the caller. If we are able to
+/// inline this call site we attempt to reuse already available allocas or add
+/// any new allocas to the set if not possible.
static bool InlineCallIfPossible(CallSite CS, CallGraph &CG,
const TargetData *TD,
InlinedArrayAllocasTy &InlinedArrayAllocas) {