From 2d6a6aa1376c220c60f524c4e028c3fb42d2a398 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 1 Mar 2004 02:44:44 +0000 Subject: [PATCH] Expand on my note-to-self git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12029 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/BasicAliasAnalysis.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp index 0b131bc76b6..16bb53f63b7 100644 --- a/lib/Analysis/BasicAliasAnalysis.cpp +++ b/lib/Analysis/BasicAliasAnalysis.cpp @@ -14,7 +14,9 @@ // FIXME: This could be extended for a very simple form of mod/ref information. // If a pointer is locally allocated (either malloc or alloca) and never passed // into a call or stored to memory, then we know that calls will not mod/ref the -// memory. This can be important for tailcallelim. +// memory. This can be important for tailcallelim, and can support CSE of loads +// and dead store elimination across calls. This is particularly important for +// stack allocated arrays. // //===----------------------------------------------------------------------===//