Auto merge of #55010 - tromey:Bug-9224-generic-parameters, r=michaelwoerister

Add template parameter debuginfo to generic types

This changes debuginfo generation to add template parameters to
generic types.  With this change the DWARF now has
DW_TAG_template_type_param for types, not just for functions, like:

 <2><40d>: Abbrev Number: 6 (DW_TAG_structure_type)
    <40e>   DW_AT_name        : (indirect string, offset: 0x375): Generic<i32>
    <412>   DW_AT_byte_size   : 4
    <413>   DW_AT_alignment   : 4
...
 <3><41f>: Abbrev Number: 8 (DW_TAG_template_type_param)
    <420>   DW_AT_type        : <0x42a>
    <424>   DW_AT_name        : (indirect string, offset: 0xa65e): T

Closes #9224

src/rustllvm/RustWrapper.cpp

@@ -832,11 +832,13 @@ LLVMRustDIBuilderCreateNameSpace(LLVMRustDIBuilderRef Builder,
 }
 
 extern "C" void
-LLVMRustDICompositeTypeSetTypeArray(LLVMRustDIBuilderRef Builder,
-                                    LLVMMetadataRef CompositeTy,
-                                    LLVMMetadataRef TyArray) {
+LLVMRustDICompositeTypeReplaceArrays(LLVMRustDIBuilderRef Builder,
+                                     LLVMMetadataRef CompositeTy,
+                                     LLVMMetadataRef Elements,
+                                     LLVMMetadataRef Params) {
   DICompositeType *Tmp = unwrapDI<DICompositeType>(CompositeTy);
-  Builder->replaceArrays(Tmp, DINodeArray(unwrap<MDTuple>(TyArray)));
+  Builder->replaceArrays(Tmp, DINodeArray(unwrap<MDTuple>(Elements)),
+                         DINodeArray(unwrap<MDTuple>(Params)));
 }
 
 extern "C" LLVMValueRef