Inline functions with string param/return for GPU targets (#2544)

* #include an absolute path didn't work - because paths were taken to always be relative.

* WIP inlining of functions that take or return string related types on GPU targets.

* Small fixes.

* Added a test.

* Add checking for any getStringHash insts are valid.

* Support getStringHash on CUDA.

* Tweak diagnostic.

1 files changed, 18 insertions, 0 deletions

diff --git a/source/slang/slang-emit-c-like.cpp b/source/slang/slang-emit-c-like.cpp
index 5b2370665..1ac50b8a7 100644
--- a/source/slang/slang-emit-c-like.cpp
+++ b/source/slang/slang-emit-c-like.cpp
@@ -2261,6 +2261,24 @@ void CLikeSourceEmitter::defaultEmitInstExpr(IRInst* inst, const EmitOpInfo& inO
         m_writer->emit(")");
         break;
     }
+    case kIROp_GetStringHash:
+    {
+        auto getStringHashInst = as<IRGetStringHash>(inst);
+        auto stringLit = getStringHashInst->getStringLit();
+
+        if (stringLit)
+        {
+            auto slice = stringLit->getStringSlice();
+            m_writer->emit(static_cast<int32_t>(getStableHashCode32(slice.begin(), slice.getLength())));
+        }
+        else
+        {
+            // Couldn't handle 
+            diagnoseUnhandledInst(inst);
+        }
+        break;
+    }
+
     default:
         diagnoseUnhandledInst(inst);
         break;