From 83876733d69582eec6bad26af64a651d40fa43aa Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Tue, 21 Mar 2023 20:03:12 -0700
Subject: Fix associated type resolution bug. (#2719)

* Fix associated type resolution bug.

* Fix.

* Fix language server hinting messed up by breadcrumb nodes.

---------

Co-authored-by: Yong He <yhe@nvidia.com>
---
 tests/autodiff/diff-assoc-type.slang              | 30 +++++++++++++++++++++++
 tests/autodiff/diff-assoc-type.slang.expected.txt |  2 ++
 2 files changed, 32 insertions(+)
 create mode 100644 tests/autodiff/diff-assoc-type.slang
 create mode 100644 tests/autodiff/diff-assoc-type.slang.expected.txt

(limited to 'tests')

diff --git a/tests/autodiff/diff-assoc-type.slang b/tests/autodiff/diff-assoc-type.slang
new file mode 100644
index 000000000..60a80b32c
--- /dev/null
+++ b/tests/autodiff/diff-assoc-type.slang
@@ -0,0 +1,30 @@
+// Tests automatic synthesis of Differential type and method requirements.
+
+//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], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+struct B : IDifferentiable
+{
+    float x;
+}
+
+float myFunc(DifferentialPair<B.Differential> d)
+{
+    return d.p.x + d.d.x;
+}
+
+float myFunc2(DifferentialPair<B>.Differential d)
+{
+    return d.p.x + d.d.x;
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    B.Differential bd;
+    bd.x = 1.0;
+    outputBuffer[0] = myFunc(diffPair(bd, bd)) + myFunc2(diffPair(bd, bd));
+}
diff --git a/tests/autodiff/diff-assoc-type.slang.expected.txt b/tests/autodiff/diff-assoc-type.slang.expected.txt
new file mode 100644
index 000000000..bc795a8ba
--- /dev/null
+++ b/tests/autodiff/diff-assoc-type.slang.expected.txt
@@ -0,0 +1,2 @@
+type: float
+4.0
-- 
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