Assorted auto-diff enhancements for increased performance & more streamlined auto-diff results (#5394)

* Various AD enhancements

* Fix issue with pt-loop test

* Update pt-loop.slang

* More fixes for perf. Final minimal context test now passes.

* Fix issue with loop-elimination pass not running after dce

* Try fix wgpu test by removing select operator

* Disable wgpu

* Delete out.wgsl

* Remove comments

* Update slang-ir-util.cpp

* Fix header relative paths for slang-embed

* Disbale wgpu for a few other tests

* Better way of determining which params to ignore for side-effects

* Update slang-ir-dce.cpp

* Fix issue with circular reference from previous AD pass being left behind for the next AD pass

* Update slang-ir-dce.cpp

1 files changed, 2 insertions, 0 deletions

diff --git a/source/slang/slang-lower-to-ir.cpp b/source/slang/slang-lower-to-ir.cpp
index ecc06ebfd..ce7ab9ac6 100644
--- a/source/slang/slang-lower-to-ir.cpp
+++ b/source/slang/slang-lower-to-ir.cpp
@@ -9898,6 +9898,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
                     {
                         addVarDecorations(context, irParam, paramDecl);
                         subBuilder->addHighLevelDeclDecoration(irParam, paramDecl);
+                        irParam->sourceLoc = paramDecl->loc;
                     }
                     addParamNameHint(irParam, paramInfo);
 
@@ -9929,6 +9930,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
                     {
                         addVarDecorations(context, irParam, paramDecl);
                         subBuilder->addHighLevelDeclDecoration(irParam, paramDecl);
+                        irParam->sourceLoc = paramDecl->loc;
                     }
                     addParamNameHint(irParam, paramInfo);
                     paramVal = LoweredValInfo::simple(irParam);