From: Chris Lattner <sabre@nondot.org>
Date: Fri, 2 Dec 2005 00:11:20 +0000 (+0000)
Subject: add a note
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=865874c88a387c4c1614db61083d2c2504dc1cdf;p=oota-llvm.git

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 c9f23d598be..57aec86d2e5 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -12,6 +12,12 @@ long long test(long long X, long long Y) { return X*Y; }
 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: