Add tool to visualize machine code/lithium.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index e7180a0ccbb72624297856db3491f03537a1ad1f..d307c2350b86d244841bab83556e4acf13214a5c 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -835,8 +835,19 @@ DEFINE_bool(print_unopt_code, false, "print unoptimized code before "
             "printing optimized code based on it")
 DEFINE_bool(print_code_verbose, false, "print more information for code")
 DEFINE_bool(print_builtin_code, false, "print generated code for builtins")
+DEFINE_bool(emit_opt_code_positions,
+            false, "annotate optimize code with source code positions")
 
 #ifdef ENABLE_DISASSEMBLER
+DEFINE_bool(sodium, false, "print generated code output suitable for use with "
+            "the Sodium code viewer")
+
+DEFINE_implication(sodium, print_code_stubs)
+DEFINE_implication(sodium, print_code)
+DEFINE_implication(sodium, print_opt_code)
+DEFINE_implication(sodium, emit_opt_code_positions)
+DEFINE_implication(sodium, code_comments)
+
 DEFINE_bool(print_all_code, false, "enable all flags related to printing code")
 DEFINE_implication(print_all_code, print_code)
 DEFINE_implication(print_all_code, print_opt_code)