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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26708 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index d92f9c9..f77fbc2 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -117,6 +117,10 @@ it needs to turn the shifts into multiplies to get it.
 
 //===---------------------------------------------------------------------===//
 
+Reassociate should turn: X*X*X*X -> t=(X*X) (t*t) to eliminate a multiply.
+
+//===---------------------------------------------------------------------===//
+
 These two functions should generate the same code on big-endian systems:
 
 int g(int *j,int *l)  {  return memcmp(j,l,4);  }