1 files changed, 110 insertions, 0 deletions
diff --git a/test/val/val_extension_spv_khr_subgroup_uniform_control_flow_test.cpp b/test/val/val_extension_spv_khr_subgroup_uniform_control_flow_test.cpp
new file mode 100644
index 00000000..f528cb9e
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+++ b/test/val/val_extension_spv_khr_subgroup_uniform_control_flow_test.cpp
@@ -0,0 +1,110 @@
+// Copyright (c) 2021 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Tests for OpExtension validator rules.
+
+#include <string>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "source/enum_string_mapping.h"
+#include "source/extensions.h"
+#include "source/spirv_target_env.h"
+#include "test/test_fixture.h"
+#include "test/unit_spirv.h"
+#include "test/val/val_fixtures.h"
+
+namespace spvtools {
+namespace val {
+namespace {
+
+using ::testing::HasSubstr;
+using ::testing::Values;
+using ::testing::ValuesIn;
+
+using ValidateSpvKHRSubgroupUniformControlFlow = spvtest::ValidateBase<bool>;
+
+TEST_F(ValidateSpvKHRSubgroupUniformControlFlow, Valid) {
+  const std::string str = R"(
+    OpCapability Shader
+    OpExtension "SPV_KHR_subgroup_uniform_control_flow"
+    OpMemoryModel Logical Simple
+    OpEntryPoint GLCompute %main "main"
+    OpExecutionMode %main LocalSize 1 1 1
+    OpExecutionMode %main SubgroupUniformControlFlowKHR
+    
+    %void    = OpTypeVoid
+    %void_fn = OpTypeFunction %void
+
+    %main = OpFunction %void None %void_fn
+    %entry = OpLabel
+    OpReturn
+    OpFunctionEnd
+)";
+  CompileSuccessfully(str.c_str());
+  EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateSpvKHRSubgroupUniformControlFlow, RequiresExtension) {
+  const std::string str = R"(
+    OpCapability Shader
+    OpMemoryModel Logical Simple
+    OpEntryPoint GLCompute %main "main"
+    OpExecutionMode %main LocalSize 1 1 1
+    OpExecutionMode %main SubgroupUniformControlFlowKHR
+    
+    %void    = OpTypeVoid
+    %void_fn = OpTypeFunction %void
+
+    %main = OpFunction %void None %void_fn
+    %entry = OpLabel
+    OpReturn
+    OpFunctionEnd
+)";
+  CompileSuccessfully(str.c_str());
+  EXPECT_NE(SPV_SUCCESS, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(),
+              HasSubstr("2nd operand of ExecutionMode: operand "
+                        "SubgroupUniformControlFlowKHR(4421) "
+                        "requires one of these extensions: "
+                        "SPV_KHR_subgroup_uniform_control_flow"));
+}
+
+TEST_F(ValidateSpvKHRSubgroupUniformControlFlow, RequiresShaderCapability) {
+  const std::string str = R"(
+    OpCapability Kernel
+    OpCapability Addresses
+    OpExtension "SPV_KHR_subgroup_uniform_control_flow"
+    OpMemoryModel Physical32 OpenCL
+    OpEntryPoint Kernel %main "main"
+    OpExecutionMode %main SubgroupUniformControlFlowKHR
+    
+    %void    = OpTypeVoid
+    %void_fn = OpTypeFunction %void
+
+    %main = OpFunction %void None %void_fn
+    %entry = OpLabel
+    OpReturn
+    OpFunctionEnd
+)";
+  CompileSuccessfully(str.c_str());
+  EXPECT_NE(SPV_SUCCESS, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(),
+              HasSubstr("Operand 2 of ExecutionMode requires one of these "
+                        "capabilities: Shader"));
+}
+
+}  // namespace
+}  // namespace val
+}  // namespace spvtools