All compiler fixes to get ir branch work with falcor feature demo.

- support overloaded generic function. this involves adding a new expression type, `OverloadedExpr2` to hold the candidate expressions for the generic function decl being referenced.
- make BitNot a normal IROp instead of an IRPseudoOp
- make sure we clone the decorations of parameters when cloning ir functions
- propagate geometry shader entry point attributes (`[maxvertexcount]` and `[instance]`) through HLSL emit
- IR emit: handle geometry shader entry-point parameter decorations, such as 'triangle'.
- IR emit: treat geometry shader stream output typed ir value as `should fold into use`.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/slang/mangle.cpp b/source/slang/mangle.cpp
index 1a412d041..29446d942 100644
--- a/source/slang/mangle.cpp
+++ b/source/slang/mangle.cpp
@@ -124,6 +124,12 @@ namespace Slang
         {
             emitQualifiedName(context, declRefType->declRef);
         }
+        else if (auto arrType = dynamic_cast<ArrayExpressionType*>(type))
+        {
+            emitRaw(context, "a");
+            emitSimpleIntVal(context, arrType->ArrayLength);
+            emitType(context, arrType->baseType);
+        }
         else
         {
             SLANG_UNEXPECTED("unimplemented case in mangling");