Misc language server fixes. (#3357)

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/language-server/incomplete-custom-derivative.slang b/tests/language-server/incomplete-custom-derivative.slang
new file mode 100644
index 000000000..06cfda723
--- /dev/null
+++ b/tests/language-server/incomplete-custom-derivative.slang
@@ -0,0 +1,20 @@
+
+//TEST:LANG_SERVER(filecheck=CHECK):
+
+RWByteAddressBuffer atomicBuffer;
+RWByteAddressBuffer atomicGradBuffer;
+
+float myDifferentiableMin(uint location, float value)
+{
+    uint originalValue;
+    atomicBuffer.InterlockedMin(location, asuint(value), originalValue);
+//SIGNATURE:12,20
+    InterlockedMin()
+    return min(asfloat(originalValue), value);
+}
+//HOVER:17,12
+[BackwardDerivativeOf(myDifferentiableMin)]
+float myDiffMin()
+
+// CHECK: func InterlockedMin
+// CHECK: func myDiffMin() -> float