Oh my. Basic CFA/DFA, local variable support, misc fixes, etc.

src/alloy/alloy.cc

@@ -21,10 +21,12 @@ using namespace alloy;
 
 DEFINE_bool(debug, DEFAULT_DEBUG_FLAG,
     "Allow debugging and retain debug information.");
-
 DEFINE_bool(always_disasm, false,
     "Always add debug info to functions, even when no debugger is attached.");
 
+DEFINE_bool(validate_hir, false,
+    "Perform validation checks on the HIR during compilation.");
+
 // Breakpoints:
 DEFINE_uint64(break_on_instruction, 0,
     "int3 before the given guest address is executed.");