Comment by AtlasBarfed
10 months ago
So what are these other techniques the 2004 migration from frame pointers assumed would work for stack walking? Why don't they work today? I get that _64 has a lot more registers, so there's minimal value to +1 the register?
In 2004, the assumption made by the GCC developers was that you would be walking stacks very infrequently, in a debugger like GDB. Not sampling stacks 1000s of times a second for profiling.