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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25921 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt
index 7afcc7471af7d90baa7c6bbb24412790f46f5e48..5281e576538ed7428831997543a81654d72be341 100644 (file)
--- a/lib/Target/PowerPC/README.txt
+++ b/lib/Target/PowerPC/README.txt
@@ -470,3 +470,8 @@ _foo:
         slwi r3, r2, 4
         blr
 
+===-------------------------------------------------------------------------===
+
+Get the C front-end to expand hypot(x,y) -> llvm.sqrt(x*x+y*y) when errno and
+precision don't matter (ffastmath).  Misc/mandel will like this. :)
+