4 files changed, 186 insertions, 0 deletions
diff --git a/tests/spirv/spec-constant-sized-array-1.slang b/tests/spirv/spec-constant-sized-array-1.slang
new file mode 100644
index 000000000..e974fc37e
--- /dev/null
+++ b/tests/spirv/spec-constant-sized-array-1.slang
@@ -0,0 +1,42 @@
+//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 5
+// CHECK: %[[I3:[0-9A-Za-z_]+]] = OpConstant %int 3
+// CHECK: %[[COP0:[0-9A-Za-z_]+]] = OpSpecConstantOp %int SRem %[[C0]] %[[I3]]
+// CHECK: %[[I2:[0-9A-Za-z_]+]] = OpConstant %int 2
+// CHECK: %[[COP1:[0-9A-Za-z_]+]] = OpSpecConstantOp %int IMul %[[I2]] %[[C0]]
+// CHECK: %[[COP2:[0-9A-Za-z_]+]] = OpSpecConstantOp %int IAdd %[[COP0]] %[[COP1]]
+// CHECK: %[[ARR_TYPE:[0-9A-Za-z_]+]] = OpTypeArray %float %[[COP2]]
+// CHECK: %[[PT_TYPE:[0-9A-Za-z_]+]] = OpTypePointer Workgroup %[[ARR_TYPE]]
+// CHECK: OpVariable %[[PT_TYPE]] Workgroup
+
+
+[SpecializationConstant]
+const int constValue0 = 5;
+
+groupshared float buffer[constValue0 * 2 + constValue0 % 3];
+
+//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+[shader("compute")]
+[numthreads(12, 1, 1)]
+void computeMain(uint3 id : SV_GroupThreadID)
+{
+    buffer[id.x] = id.x;
+
+    GroupMemoryBarrier();
+    if (id.x == 0)
+    {
+        static const int size = constValue0 * 2 + constValue0 % 3;
+        float temp = 0;
+        for (uint i = 0; i < size; i++)
+        {
+            temp = temp + buffer[i];
+        }
+        outputBuffer[0] = temp;
+    }
+    // Result will be (0 + size-1) * size / 2
+    // BUF: 66
+}
diff --git a/tests/spirv/spec-constant-sized-array-2.slang b/tests/spirv/spec-constant-sized-array-2.slang
new file mode 100644
index 000000000..95d2f4aee
--- /dev/null
+++ b/tests/spirv/spec-constant-sized-array-2.slang
@@ -0,0 +1,48 @@
+//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: %[[I2:[0-9A-Za-z_]+]] = OpConstant %int 2
+// CHECK: %[[COP0:[0-9A-Za-z_]+]] = OpSpecConstantOp %int SDiv %[[C0]] %[[I2]]
+// CHECK: %[[COP1:[0-9A-Za-z_]+]] = OpSpecConstantOp %int ShiftRightArithmetic %[[C0]] %[[I2]]
+// CHECK: %[[COP2:[0-9A-Za-z_]+]] = OpSpecConstantOp %int IAdd %[[COP0]] %[[COP1]]
+// CHECK: %[[ARR_TYPE:[0-9A-Za-z_]+]] = OpTypeArray %float %[[COP2]]
+// CHECK: %[[PT_TYPE:[0-9A-Za-z_]+]] = OpTypePointer Function %[[ARR_TYPE]]
+
+[SpecializationConstant]
+const int constValue0 = 32;
+
+//TEST_INPUT:ubuffer(data=[0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+static float g_buffer[constValue0 / 2 + (constValue0 >> 2)];
+
+[shader("compute")]
+[numthreads(1, 1, 1)]
+void computeMain()
+{
+    float buffer[constValue0 / 2 + (constValue0 >> 2)];
+    // CHECK: OpVariable %[[PT_TYPE]] Function
+
+    static const int size = constValue0 / 2 + (constValue0 >> 2);   // 16 + 8 = 24
+    for (uint i = 0; i < size; i++)
+    {
+        buffer[i] = i;
+        g_buffer[i] = i * 2;
+    }
+
+    float temp1 = 0.0f;
+    float temp2 = 0.0f;
+    for (uint i = 0; i < size; i++)
+    {
+        temp1 += buffer[i] * 2;
+        temp2 += g_buffer[i];
+    }
+
+    // Result will be (0 + size-1) * size = (0 + 23) * 24 = 552
+    outputBuffer[0] = temp1;
+    // BUF: 552
+
+    outputBuffer[1] = temp2;
+    // BUF-NEXT: 552
+}
diff --git a/tests/spirv/spec-constant-sized-array-3.slang b/tests/spirv/spec-constant-sized-array-3.slang
new file mode 100644
index 000000000..39106aa5b
--- /dev/null
+++ b/tests/spirv/spec-constant-sized-array-3.slang
@@ -0,0 +1,48 @@
+//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 4
+// CHECK: %[[I1:[0-9A-Za-z_]+]] = OpConstant %int 1
+// CHECK: %[[COP0:[0-9A-Za-z_]+]] = OpSpecConstantOp %int BitwiseAnd %[[C0]] %[[I1]]
+// CHECK: %[[I2:[0-9A-Za-z_]+]] = OpConstant %int 2
+// CHECK: %[[COP1:[0-9A-Za-z_]+]] = OpSpecConstantOp %int BitwiseOr %[[COP0]] %[[I2]]
+// CHECK: %[[COP2:[0-9A-Za-z_]+]] = OpSpecConstantOp %int IAdd %[[I1]] %[[COP1]]
+// CHECK: %[[COP3:[0-9A-Za-z_]+]] = OpSpecConstantOp %int ShiftLeftLogical %[[C0]] %[[COP2]]
+// CHECK: %[[ARR_TYPE:[0-9A-Za-z_]+]] = OpTypeArray %float %[[COP3]]
+// CHECK: %[[PT_TYPE:[0-9A-Za-z_]+]] = OpTypePointer Function %[[ARR_TYPE]]
+
+[SpecializationConstant]
+const int constValue0 = 4;
+
+//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+static const int size = constValue0 << (1 + (constValue0 & 0x01 | 0x02));   // 4 << 3 = 32
+
+// This test is to verify that if two array has the same spec constant size, they are the same type.
+void func(out float buffer[constValue0 << (1 + (constValue0 & 0x01 | 0x02))], int idx)
+{
+    for (uint i = 0; i < size; i++)
+    {
+        buffer[i] = i;
+    }
+}
+
+[shader("compute")]
+[numthreads(1, 1, 1)]
+void computeMain(uint tid:SV_DispatchThreadID)
+{
+    float buffer[constValue0 << (1 + (constValue0 & 0x01 | 0x02))];
+    // CHECK: OpVariable %[[PT_TYPE]] Function
+
+    func(buffer, tid);
+
+    float temp = buffer[0];
+    for (uint i = 0; i < size; i++)
+    {
+        temp += buffer[i] * 2;
+    }
+    // Result will be (0 + size-1) * size = (0 + 31) * 32 * 2 = 992
+    outputBuffer[0] = temp;
+    // BUF: 992
+}
diff --git a/tests/spirv/spec-constant-sized-array-4.slang b/tests/spirv/spec-constant-sized-array-4.slang
new file mode 100644
index 000000000..0c511bc01
--- /dev/null
+++ b/tests/spirv/spec-constant-sized-array-4.slang
@@ -0,0 +1,48 @@
+//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;
+    }
+}
+
+[shader("compute")]
+[numthreads(1, 1, 1)]
+void computeMain()
+{
+    // This test checks that when we are using local constant that are computed from spec constant,
+    // the size can be defined in global scope, and type check can pass the when we call `func`.
+    const int localConst = constValue0 / constValue1;
+    float buffer[localConst];
+    // CHECK: OpVariable %[[PT_TYPE]] Function
+
+    func(buffer);
+
+    float temp = 0.0f;
+    for (uint i = 0; i < localConst; i++)
+    {
+        temp += buffer[i] * 2;
+    }
+
+    // Result will be (0 + localConst-1) * localConst = 15 * 16 = 240
+    outputBuffer[0] = temp;
+    // BUF: 240
+}