[OpenCL] Enabling the usage of CLK_NULL_QUEUE as compare operand.

Summary: Enabling the compression of CLK_NULL_QUEUE to variable of type queue_t.

Reviewers: Anastasia

Subscribers: cfe-commits, yaxunl, bader

Differential Revision: https://reviews.llvm.org/D27569

llvm-svn: 290171

3 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 35148bea001..009244784e5 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -751,6 +751,7 @@ void AggExprEmitter::VisitCastExpr(CastExpr *E) {
   case CK_CopyAndAutoreleaseBlockObject:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
+  case CK_ZeroToOCLQueue:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("cast kind invalid for aggregate types");
diff --git a/clang/lib/CodeGen/CGExprComplex.cpp b/clang/lib/CodeGen/CGExprComplex.cpp
index 60bbc5cfac1..59bc9cdbc05 100644
--- a/clang/lib/CodeGen/CGExprComplex.cpp
+++ b/clang/lib/CodeGen/CGExprComplex.cpp
@@ -480,6 +480,7 @@ ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
   case CK_CopyAndAutoreleaseBlockObject:
   case CK_BuiltinFnToFnPtr:
   case CK_ZeroToOCLEvent:
+  case CK_ZeroToOCLQueue:
   case CK_AddressSpaceConversion:
   case CK_IntToOCLSampler:
     llvm_unreachable("invalid cast kind for complex value");
diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index e9bdbda34aa..1b85c45cd4b 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -1593,6 +1593,11 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
     return llvm::Constant::getNullValue(ConvertType(DestTy));
   }
 
+  case CK_ZeroToOCLQueue: {
+    assert(DestTy->isQueueT() && "CK_ZeroToOCLQueue cast on non queue_t type");
+    return llvm::Constant::getNullValue(ConvertType(DestTy));
+  }
+
   case CK_IntToOCLSampler:
     return CGF.CGM.createOpenCLIntToSamplerConversion(E, CGF);