expand note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45393 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 2ef77cb8d309c609db75d625861ba4c138eed8a9..1f7b3c8cd0625e207fdc0ca52b50a1c7490bf1d0 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -512,6 +512,10 @@ better to sink the picbase computation down into the block for the
 assertion, as it is the only one that uses it.  This happens for a lot of 
 code with early outs.
 
+Another example is loads of arguments, which are usually emitted into the 
+entry block on targets like x86.  If not used in all paths through a 
+function, they should be sunk into the ones that do.
+
 In this case, whole-function-isel would also handle this.
 
 //===---------------------------------------------------------------------===//