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-rw-r--r--llvm/lib/Target/README.txt11
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/Target/README.txt b/llvm/lib/Target/README.txt
index c369c8f2434..3100b87005e 100644
--- a/llvm/lib/Target/README.txt
+++ b/llvm/lib/Target/README.txt
@@ -106,3 +106,14 @@ This would be a win on ppc32, but not x86 or ppc64.
Shrink: (setlt (loadi32 P), 0) -> (setlt (loadi8 Phi), 0)
//===---------------------------------------------------------------------===//
+
+Reassociate is missing this:
+
+int test(int X, int Y) {
+ return (X+X+Y+Y); // (X+Y) << 1;
+}
+
+it needs to turn the shifts into multiplies to get it.
+
+//===---------------------------------------------------------------------===//
+
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