1 files changed, 53 insertions, 0 deletions
diff --git a/tests/spirv/spec-constant-generic.slang b/tests/spirv/spec-constant-generic.slang
new file mode 100644
index 000000000..65eed2810
--- /dev/null
+++ b/tests/spirv/spec-constant-generic.slang
@@ -0,0 +1,53 @@
+//TEST:SIMPLE(filecheck=CHECK): -target spirv
+//TEST(compute, vulkan):COMPARE_COMPUTE(filecheck-buffer=BUF):-vk -output-using-type
+
+// CHECK: %[[C0:[0-9A-Za-z_]+]] = OpSpecConstant %int 32
+// CHECK: %[[C1:[0-9A-Za-z_]+]] = OpSpecConstant %int 2
+// CHECK: %[[COP0:[0-9A-Za-z_]+]] = OpSpecConstantOp %int SDiv %[[C0]] %[[C1]]
+// CHECK: %[[ARR_TYPE:[0-9A-Za-z_]+]] = OpTypeArray %float %[[COP0]]
+// CHECK: %[[PT_TYPE:[0-9A-Za-z_]+]] = OpTypePointer Function %[[ARR_TYPE]]
+
+[SpecializationConstant]
+const int constValue0 = 32;
+
+[SpecializationConstant]
+const int constValue1 = 2;
+
+//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+void func(out float buffer[constValue0 / constValue1])
+{
+    for (uint i = 0; i < constValue0 / constValue1; i++)
+    {
+        buffer[i] = i;
+    }
+}
+
+struct MyStruct<let N: int>
+{
+    float buffer[N / constValue1];
+}
+
+[shader("compute")]
+[numthreads(1, 1, 1)]
+void computeMain()
+{
+    // This test checks we can use spec constants for generic arguments, and also
+    // we can show that the array size is computed correctly.
+    // The function call shows that the two arrays are the same type.
+    MyStruct<constValue0> s;
+    // CHECK: OpVariable %[[PT_TYPE]] Function
+
+    func(s.buffer);
+
+    float temp = 0.0f;
+    for (uint i = 0; i < constValue0 / constValue1; i++)
+    {
+        temp += s.buffer[i] * 2;
+    }
+
+    // Result will be (0 + localConst-1) * localConst = 15 * 16 = 240
+    outputBuffer[0] = temp;
+    // BUF: 240
+}