New pass: PropagateStructGets

scripts/fuzz_opt.py

@@ -2728,6 +2728,7 @@ def write_commands(commands, filename):
     ("--heap2local",),
     ("--remove-unused-names", "--heap2local",),
     ("--heap-store-optimization",),
+    ("--heap-untangling",),
     ("--generate-stack-ir",),
     ("--licm",),
     ("--local-subtyping",),

src/passes/CMakeLists.txt

@@ -52,6 +52,7 @@ set(passes_SOURCES
   Outlining.cpp
   Heap2Local.cpp
   HeapStoreOptimization.cpp
+  HeapUntangling.cpp
   I64ToI32Lowering.cpp
   Inlining.cpp
   InstrumentBranchHints.cpp