Overhaul global inst deduplication and cpp/cuda backend. (#2654)

* Overhaul global inst deduplication and cpp/cuda backend.

* Update IR documentation.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/source/slang/slang-ir-collect-global-uniforms.cpp b/source/slang/slang-ir-collect-global-uniforms.cpp
index ca5e56b53..ad0dfda91 100644
--- a/source/slang/slang-ir-collect-global-uniforms.cpp
+++ b/source/slang/slang-ir-collect-global-uniforms.cpp
@@ -192,7 +192,8 @@ struct CollectGlobalUniformParametersContext
             // per-field layout information to reference the key we created
             // instead of the existing parameter (which we will be removing).
             //
-            fieldLayoutAttr->setOperand(0, fieldKey);
+            fieldLayoutAttr = as<IRStructFieldLayoutAttr>(
+                builder->replaceOperand(fieldLayoutAttr->getOperands(), fieldKey));
 
             // If the given parameter doesn't contribute to uniform/ordinary usage, then
             // we can safely leave it at the global scope and potentially avoid a lot
@@ -266,7 +267,7 @@ struct CollectGlobalUniformParametersContext
                 //
                 if(auto layoutAttr = as<IRStructFieldLayoutAttr>(user))
                 {
-                    layoutAttr->setOperand(0, fieldKey);
+                    builder->replaceOperand(layoutAttr->getOperands(), fieldKey);
                     continue;
                 }