From 595b6d121cbbae3f58e508ae928b4ed917e686b6 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 3 Apr 2007 06:43:29 +0000
Subject: [PATCH] Bad bad bug. findRegisterUseOperand() returns -1 if a use if
 not found.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35618 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegisterScavenging.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp
index 06368639b8c..13a36199195 100644
--- a/lib/CodeGen/RegisterScavenging.cpp
+++ b/lib/CodeGen/RegisterScavenging.cpp
@@ -235,7 +235,7 @@ static unsigned calcDistanceToUse(MachineBasicBlock *MBB,
   I = next(I);
   while (I != MBB->end()) {
     Dist++;
-    if (I->findRegisterUseOperand(Reg))
+    if (I->findRegisterUseOperand(Reg) != -1)
         return Dist;
     I = next(I);    
   }