add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24572 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index c9f23d5..57aec86 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -12,6 +12,12 @@
by using the EAX result from the mul. We should add a similar node for
DIVREM.
+another case is:
+
+long long test(int X, int Y) { return (long long)X*Y; }
+
+... which should only be one imul instruction.
+
//===---------------------------------------------------------------------===//
This should be one DIV/IDIV instruction, not a libcall: