From 76f6e2671acaaf39e8b4ba82f544e15a4632794a Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 29 May 2012 19:40:44 +0000
Subject: Optional def can be either a def or a use (of reg0).

llvm-svn: 157640
---
 llvm/lib/CodeGen/MachineVerifier.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index a2027509783..20dbe11bf9e 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -634,7 +634,7 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) {
   if (MONum < MCID.getNumDefs()) {
     if (!MO->isReg())
       report("Explicit definition must be a register", MO, MONum);
-    else if (!MO->isDef())
+    else if (!MO->isDef() && !MCOI.isOptionalDef())
       report("Explicit definition marked as use", MO, MONum);
     else if (MO->isImplicit())
       report("Explicit definition marked as implicit", MO, MONum);
-- 
cgit v1.2.3