r600g/compute: Handle NULL kernel metadatagc-api

1 files changed, 10 insertions, 2 deletions

diff --git a/src/gallium/drivers/r600/llvm_wrapper.cpp b/src/gallium/drivers/r600/llvm_wrapper.cpp
index ae2f4d24f74..e4b2686f254 100644
--- a/src/gallium/drivers/r600/llvm_wrapper.cpp
+++ b/src/gallium/drivers/r600/llvm_wrapper.cpp
@@ -54,8 +54,16 @@ extern "C" LLVMModuleRef llvm_get_kernel_module(unsigned index,
 	llvm::Module *M = llvm::unwrap(mod);
 	const llvm::NamedMDNode *kernel_node =
 				M->getNamedMetadata("opencl.kernels");
-	const char* kernel_name = kernel_node->getOperand(index)->
-					getOperand(0)->getName().data();
+	const llvm::Value *kernel =
+			kernel_node->getOperand(index)->getOperand(0);
+	const char *kernel_name;
+	// It is possible for a kernel metadata entry to be NULL, so we
+	// must handle this case.
+	if (kernel) {
+		kernel_name = kernel->getName().data();
+	} else {
+		kernel_name = "";
+	}
 	llvm_strip_unused_kernels(mod, kernel_name);
 	return mod;
 }