From: John McCall <rjmccall@apple.com>
Date: Thu, 24 Dec 2009 08:52:06 +0000 (+0000)
Subject: Set Remainder before Quotient in case Quotient and LHS alias.  The new
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d73bf5987a0855e677fcefba74334c6a85b0b326;p=oota-llvm.git

Set Remainder before Quotient in case Quotient and LHS alias.  The new
order should be immune to such problems.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92124 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 56d47736eab..9532e1e160b 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -2012,8 +2012,8 @@ void APInt::udivrem(const APInt &LHS, const APInt &RHS,
   }
 
   if (lhsWords < rhsWords || LHS.ult(RHS)) {
-    Quotient = 0;               // X / Y ===> 0, iff X < Y
     Remainder = LHS;            // X % Y ===> X, iff X < Y
+    Quotient = 0;               // X / Y ===> 0, iff X < Y
     return;
   }