Perf improvements to IR serialization (#7751)

* option to use riff as serialization backend

* option to use riff as serialization backend

* perf

* shuffle code

* perf improvements to deserialization

* formatting

* remove bit_cast

* correct IR verification

* neaten serialized format

* fix peek module info

* formatting

* remove temporary profiling code

* cleanup

* fix wasm build

* more explicit sizes

* deserialize via fossil on 32 bit wasm

* Make serialized modules Int size agnostic

* reorder stable names to allow range based check for 64 bit constants

* format

* review comments

* fix build

* fix

* c++17 compat slang-common.h

1 files changed, 1 insertions, 22 deletions

diff --git a/source/slang/slang-serialize-container.cpp b/source/slang/slang-serialize-container.cpp
index 7325f6e42..535155c22 100644
--- a/source/slang/slang-serialize-container.cpp
+++ b/source/slang/slang-serialize-container.cpp
@@ -580,32 +580,11 @@ static void calcModuleInstructionList(IRModule* module, List<IRInst*>& instsOut)
     instsOut.setCount(1);
     instsOut[0] = nullptr;
 
-    // Stack for parentInst
-    List<IRInst*> parentInstStack;
-
     IRModuleInst* moduleInst = module->getModuleInst();
-    parentInstStack.add(moduleInst);
-
-    // Add to list
-    instsOut.add(moduleInst);
-
-    // Traverse all of the instructions
-    while (parentInstStack.getCount())
-    {
-        // If it's in the stack it is assumed it is already in the inst map
-        IRInst* parentInst = parentInstStack.getLast();
-        parentInstStack.removeLast();
 
-        IRInstListBase childrenList = parentInst->getDecorationsAndChildren();
-        for (IRInst* child : childrenList)
-        {
-            instsOut.add(child);
-            parentInstStack.add(child);
-        }
-    }
+    traverseInstsInSerializationOrder(moduleInst, [&](IRInst* inst) { instsOut.add(inst); });
 }
 
-
 /* static */ SlangResult SerialContainerUtil::verifyIRSerialize(
     IRModule* module,
     Session* session,