4 files changed, 127 insertions, 0 deletions
diff --git a/tests/autodiff/reverse-matrix-ops.slang b/tests/autodiff/reverse-matrix-ops.slang
new file mode 100644
index 000000000..e7be41811
--- /dev/null
+++ b/tests/autodiff/reverse-matrix-ops.slang
@@ -0,0 +1,92 @@
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+typedef DifferentialPair<float3> dpfloat3;
+typedef float3.Differential dfloat3;
+
+typedef DifferentialPair<float2> dpfloat2;
+typedef float2.Differential dfloat2;
+
+[BackwardDifferentiable]
+float2 test_reshape(float3 x, float3 y, int i, int j)
+{
+    float2x3 m = float2x3(x, y);
+    let mSmall = float2x2(m);
+    return mSmall[i] + mSmall[j];
+}
+
+[BackwardDifferentiable]
+float3 test_vectorFromScalar(float x)
+{
+    return float3(x);
+}
+
+[BackwardDifferentiable]
+float3x3 test_matrixFromScalar(float x)
+{
+    return float3x3(x);
+}
+
+[BackwardDifferentiable]
+float2x2 test_matrixConstruct(float a, float b, float c, float d)
+{
+    return float2x2(a, b, c, d);
+}
+
+[BackwardDifferentiable]
+float3 test_makeVector(float x, float2 y)
+{
+    return float3(x, y);
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    {
+        dpfloat3 dpx = dpfloat3(float3(2.0, 3.0, 4.0), float3(0.0, 0.0, 0.0));
+        dpfloat3 dpy = dpfloat3(float3(1.5, 2.5, 3.5), float3(0.0, 0.0, 0.0));
+
+        __bwd_diff(test_reshape)(dpx, dpy, 0, 1, dfloat2(1.0, 2.0));
+        outputBuffer[0] = dpx.d.y; // Expect: 2
+        outputBuffer[1] = dpy.d.y; // Expect: 2
+    }
+
+    {
+        DifferentialPair<float> dpx = diffPair(1.0, 0.0);
+
+        __bwd_diff(test_vectorFromScalar)(dpx, dfloat3(2.0));
+        outputBuffer[2] = dpx.d; // Expect: 6.0
+    }
+
+    {
+        DifferentialPair<float> dpx = diffPair(1.0, 0.0);
+
+        __bwd_diff(test_matrixFromScalar)(dpx, float3x3(1.0));
+        outputBuffer[3] = dpx.d; // Expect: 9.0
+    }
+    {
+        DifferentialPair<float> dpa = diffPair(1.0, 0.0);
+        DifferentialPair<float> dpb = diffPair(1.0, 0.0);
+        DifferentialPair<float> dpc = diffPair(1.0, 0.0);
+        DifferentialPair<float> dpd = diffPair(1.0, 0.0);
+
+        __bwd_diff(test_matrixConstruct)(dpa, dpb, dpc, dpd, float2x2(1.0, 2.0, 3.0, 4.0));
+        outputBuffer[4] = dpa.d; // Expect: 1.0
+        outputBuffer[5] = dpb.d; // Expect: 2.0
+        outputBuffer[6] = dpc.d; // Expect: 3.0
+        outputBuffer[7] = dpd.d; // Expect: 4.0
+    }
+    {
+        DifferentialPair<float> dpx = diffPair(1.0, 0.0);
+        dpfloat2 dpy = dpfloat2(float2(1.5, 2.5), float2(0.0, 0.0));
+
+        __bwd_diff(test_makeVector)(dpx, dpy, float3(1.0, 1.5, 2.0));
+        outputBuffer[8] = dpx.d; // Expect: 1.0
+        outputBuffer[9] = dpy.d.x; // Expect: 1.5
+        outputBuffer[10] = dpy.d.y; // Expect: 2.0
+    }
+
+}
diff --git a/tests/autodiff/reverse-matrix-ops.slang.expected.txt b/tests/autodiff/reverse-matrix-ops.slang.expected.txt
new file mode 100644
index 000000000..990865983
--- /dev/null
+++ b/tests/autodiff/reverse-matrix-ops.slang.expected.txt
@@ -0,0 +1,12 @@
+type: float
+2.0
+2.0
+6.0
+9.0
+1.0
+2.0
+3.0
+4.0
+1.0
+1.5
+2.0
+\ No newline at end of file
diff --git a/tests/language-server/invalid-const-suffix.slang b/tests/language-server/invalid-const-suffix.slang
new file mode 100644
index 000000000..e2365a3d1
--- /dev/null
+++ b/tests/language-server/invalid-const-suffix.slang
@@ -0,0 +1,12 @@
+//TEST:LANG_SERVER:
+
+struct MyType {};
+
+void m()
+{
+//HOVER:8,9
+    MyType b;
+    int t = 2tdf;
+    float c = 3.0ug;
+    reinterpret<MyType, MyType>(b);
+}
diff --git a/tests/language-server/invalid-const-suffix.slang.expected.txt b/tests/language-server/invalid-const-suffix.slang.expected.txt
new file mode 100644
index 000000000..ec920b2eb
--- /dev/null
+++ b/tests/language-server/invalid-const-suffix.slang.expected.txt
@@ -0,0 +1,11 @@
+--------
+range: 7,4 - 7,10
+content:
+```
+struct MyType
+```
+
+
+{REDACTED}.slang(3)
+
+