Fix spirv debug info for pointer types. (#5319)

* Fix spirv debug info for pointer types.

* fix comment.

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/spirv/debug-type-pointer-2.slang b/tests/spirv/debug-type-pointer-2.slang
new file mode 100644
index 000000000..4112d4905
--- /dev/null
+++ b/tests/spirv/debug-type-pointer-2.slang
@@ -0,0 +1,24 @@
+//TEST:SIMPLE(filecheck=CHECK): -target spirv
+
+// Check that we do not emit forward reference for debug pointer types if there isn't a need to do so.
+
+// CHECK-NOT: OpExtension "SPV_KHR_relaxed_extended_instruction"
+struct T
+{
+    uint inner;
+}
+
+struct Problem
+{
+    int getVal() { return some_bda_ptr->inner;}
+    T *some_bda_ptr;
+}
+
+uniform Problem probs;
+
+RWStructuredBuffer<float4> outputBuffer;
+[shader("compute")]
+float4 main()
+{
+    outputBuffer[0] = float(probs.getVal());
+}
\ No newline at end of file