This is a tool for comparing the output of "objdump" for a before/after pair of .o files.
It attempts to be more useful than a purely textual "diff" in the following ways:
- It ignores reorderings of functions, instead matching them by name.
- It has heuristics for matching up methods between old and new even if the underlying class is renamed, or if a function becomes a method.
- Functions that appear/disappear are reported by name, rather than emitting the body of the code.
- Code locations and jump targets are tracked relative to the top of the function that they're in, so that movement of a function within the .text section doesn't show up as a difference.
- Trailing nop instructions (for padding) are ignored