From 89831421af27b23573033e24594d21b804de1a95 Mon Sep 17 00:00:00 2001
From: Egor Churaev <egor.churaev@gmail.com>
Date: Fri, 23 Dec 2016 14:55:49 +0000
Subject: Fix problems in "[OpenCL] Enabling the usage of CLK_NULL_QUEUE as
 compare operand."

Summary: Fixed warnings in commit: https://reviews.llvm.org/rL290171

Reviewers: djasper, Anastasia

Subscribers: yaxunl, cfe-commits, bader

Differential Revision: https://reviews.llvm.org/D27981

llvm-svn: 290431
---
 clang/lib/Sema/SemaExpr.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'clang/lib/Sema/SemaExpr.cpp')

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index b8883456911..3c554c9a524 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -9635,6 +9635,18 @@ QualType Sema::CheckCompareOperands(ExprResult &LHS, ExprResult &RHS,
     return ResultTy;
   }
 
+  if (getLangOpts().OpenCLVersion >= 200) {
+    if (LHSIsNull && RHSType->isQueueT()) {
+      LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer);
+      return ResultTy;
+    }
+
+    if (LHSType->isQueueT() && RHSIsNull) {
+      RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer);
+      return ResultTy;
+    }
+  }
+
   return InvalidOperands(Loc, LHS, RHS);
 }
 
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