[ir] Add support for "decorations" on instructions

The terminology here is similar to SPIR-V. For right now the only decoration exposed is a fairly brute-force one that just points back to a high-level declaration so that we can look up info on it that might affect how we print output.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/slang/lower-to-ir.cpp b/source/slang/lower-to-ir.cpp
index 5d0a40072..781209dce 100644
--- a/source/slang/lower-to-ir.cpp
+++ b/source/slang/lower-to-ir.cpp
@@ -562,6 +562,8 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
                     auto irField = builder->createStructField(getSimpleType(fieldType));
                     builder->addInst(irStruct, irField);
 
+                    builder->addHighLevelDeclDecoration(irField, fieldDecl);
+
                     context->shared->declValues.Add(
                         DeclRef<StructField>(fieldDecl, nullptr),
                         LoweredValInfo::simple(irField));
@@ -573,6 +575,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
             }
         }
 
+        builder->addHighLevelDeclDecoration(irStruct, decl);
 
         builder->addInst(irStruct);
 
@@ -624,6 +627,8 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
 
         lowerStmt(subContext, decl->Body);
 
+        getBuilder()->addHighLevelDeclDecoration(irFunc, decl);
+
         getBuilder()->addInst(irFunc);
 
         return LoweredValInfo::simple(irFunc);