Expand on my note-to-self

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12029 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-03-01 02:44:44 +00:00
parent 21585221b6
commit 2d6a6aa137

View File

@ -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.
//
//===----------------------------------------------------------------------===//