New entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29091 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/README-SSE.txt b/lib/Target/X86/README-SSE.txt
index 5b741e6f7aaa0e56e76c7a4de9a91c91477d3b6a..b68d43e46582c2127ee4d8fecf10387e349f64a8 100644 (file)
--- a/lib/Target/X86/README-SSE.txt
+++ b/lib/Target/X86/README-SSE.txt
@@ -693,3 +693,6 @@ void test4(vectorfloat *F, float *f) {
 }
 
 //===---------------------------------------------------------------------===//
+
+Apply the same transformation that merged four float into a single 128-bit load
+to loads from constant pool.